Reports.TAOSTSL201R-LF History

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February 14, 2007, at 03:27 PM by Christopher Kucinski -
Changed line 60 from:
#I'm unsure of the nature of the Serial Input pulse. The table on page states the minimum duration of that pulse must be 20nanoseconds. But no 'information' (as in an ASCII character) needs to be sent to the sensor - the pin on the sensor only needs to be set 'high', right?
to:
#I'm unsure of the nature of the Serial Input pulse. The table on page 4 states the minimum duration of that pulse must be 20nanoseconds. But no 'information' (as in an ASCII character) needs to be sent to the sensor - the pin on the sensor only needs to be set 'high', right?
February 14, 2007, at 03:25 PM by Christopher Kucinski -
Changed line 16 from:
The overall dimensions (in inches) of the sensor are: 0.44W x 0.26H x .175 thick.\\\
to:
The overall dimensions (in inches) of the sensor are: 0.44W x 0.26H x 0.175 thick.\\\
February 14, 2007, at 03:25 PM by Christopher Kucinski -
Changed lines 15-16 from:
Each of the 64 photodiodes measures 120m x 70m and are placed 55m apart, which translates to 200 dots-per-inch (DPI) sensor pitch(resolution?).\\
\\
to:
Each of the 64 photodiodes measures 120m x 70m and are placed 55m apart, which translates to 200 dots-per-inch (DPI) sensor pitch(resolution?).\\\
The overall dimensions (in inches) of the sensor are: 0.44W x 0.26H x .175 thick.\
\\
February 14, 2007, at 01:13 PM by Christopher Kucinski -
Changed line 60 from:
#I'm unsure of the nature of the Serial Input pulse. The table on page states the minimum duration of that pulse must be 20nanoseconds. But no 'information' (as in an ASCII character) needs to be sent to the sensor - the pin on the sensor only needs to be set 'high', right?
to:
#I'm unsure of the nature of the Serial Input pulse. The table on page states the minimum duration of that pulse must be 20nanoseconds. But no 'information' (as in an ASCII character) needs to be sent to the sensor - the pin on the sensor only needs to be set 'high', right?
February 14, 2007, at 01:13 PM by Christopher Kucinski -
Changed line 1 from:
[++'''Datasheet Report - February 14 2007'''++]
to:
[++'''Datasheet Report - February 14 2007'''++]\\
Changed line 56 from:
#
to:
#What is the difference between "normal white level" and "saturation light level?"
Changed line 60 from:
#I'm unsure of the nature of the Serial Input pulse. The table on page states the minimum duration of that pulse must be 20nanoseconds. But no 'information' needs to be sent to the sensor - the pin on the sensor only needs to be set 'high?'
to:
#I'm unsure of the nature of the Serial Input pulse. The table on page states the minimum duration of that pulse must be 20nanoseconds. But no 'information' (as in an ASCII character) needs to be sent to the sensor - the pin on the sensor only needs to be set 'high', right?
February 14, 2007, at 01:07 PM by Christopher Kucinski -
Changed line 5 from:
[[http://www.taosinc.com/images/product/document/TSL201R-LF-E5.PDF | PDF from Texas Advanced Optoelectronic Solutions]]
to:
[[http://www.taosinc.com/images/product/document/TSL201R-LF-E5.PDF | PDF from Texas Advanced Optoelectronic Solutions]] (TAOS)
Changed line 60 from:
#I'm unsure of the nature of the Serial Input pulse. The table on page states the minimum duration of that pulse must be 20nanoseconds. But no 'information' needs to be sent to the sensor - the pin on the sensor only needs to be set 'high?'
to:
#I'm unsure of the nature of the Serial Input pulse. The table on page states the minimum duration of that pulse must be 20nanoseconds. But no 'information' needs to be sent to the sensor - the pin on the sensor only needs to be set 'high?'
February 14, 2007, at 01:07 PM by Christopher Kucinski -
Changed lines 33-34 from:
->R'_e_' is the device responsivity for a given wavelength of light given in V/(μJ/cm2)
->E'_e_' is the incident irradiance in μW/cm2
to:
->R'_e_' is the device responsivity for a given wavelength of light given in V/(W/cm'^2^')
->E'_e_' is the incident irradiance in W/cm'^2^'
Deleted line 35:
Added lines 37-42:
Typical Output ranges:
The output is nominally 0 V for no light input, 2 V for normal white-level, and 3.4 V for saturation light level. When the device is not in the output phase, the analog out pin (AO) is in a high impedance state.\\
\\
Note: A 330-Ohm resistor must be placed between pins 6+7(Ground pins) and pin 3 (AO).

\\
Changed lines 59-60 from:
#
to:
# The datasheet mentions a "voltage follower" (page 2) to read in the Voltage Output. Does this mean that what ever is reading in that voltage also needs to be running at the same clock frequency as the TSL-201?
#I'm unsure of the nature of the Serial Input pulse. The table on page states the minimum duration of that pulse must be 20nanoseconds. But no 'information' needs to be sent to the sensor - the pin on the sensor only needs to be set 'high?'
February 14, 2007, at 12:52 PM by Christopher Kucinski -
Changed line 28 from:
->V'_out_' = V'_drk_' + (R'_e_') (E'_e_') (t'_int_')\\
to:
V'_out_' = V'_drk_' + (R'_e_') (E'_e_') (t'_int_')\\
Changed line 30 from:
Where:\\
to:
Where:
February 14, 2007, at 12:50 PM by Christopher Kucinski -
Changed line 28 from:
V'_out_' = V'_drk_' + (R'_e_') (E'_e_') (t'_int_')
to:
->V'_out_' = V'_drk_' + (R'_e_') (E'_e_') (t'_int_')\\
Added lines 30-37:
Where:\\
->V'_out_' is the analog output voltage for white condition
->V'_drk_' is the analog output voltage for dark condition
->R'_e_' is the device responsivity for a given wavelength of light given in V/(μJ/cm2)
->E'_e_' is the incident irradiance in μW/cm2
->t'_int_' is integration time in seconds

\\
February 14, 2007, at 12:47 PM by Christopher Kucinski -
Added line 7:
[[http://www.taosinc.com | TAOS website]]
February 14, 2007, at 12:46 PM by Christopher Kucinski -
Changed lines 25-26 from:
The voltage output (VO) is an analog value generated from this equation:
V'_out_' = Vdrk + (Re) (Ee) (tint)
to:
The voltage output (VO) is an analog value generated from this equation:\\
Added lines 27-28:
V'_out_' = V'_drk_' + (R'_e_') (E'_e_') (t'_int_')
\\
February 14, 2007, at 12:44 PM by Christopher Kucinski -
Changed line 20 from:
As light strikes each photodiode (pixel), photocurrent is generated and sent to (integrated with) the 'active integration circuitry' associated with that pixel. The integration circuitry charges a sampling capacitor directly proportionally to the light intensity and the integration time. The integration time is 64 clock pulses (one pulse for every pixel). Each capacitor discharges sequentially through an analog switch to an output amplifier, which then generates a voltage output. So as pixel 1 is discharging, pixel 32 is halfway through its integration period. This sequential output is controlled by a 64-bit shift register. The shift register is controlled by the serial input pulse, which must happen on the 65th pulse of the clock. On that 65th pulse, the
to:
As light strikes each photodiode (pixel), photocurrent is generated and sent to (integrated with) the 'active integration circuitry' associated with that pixel. The integration circuitry charges a sampling capacitor directly proportionally to the light intensity and the integration time. The integration time is 64 clock pulses (one pulse for every pixel).
Added lines 22-27:
\\
Each capacitor discharges sequentially through an analog switch to an output amplifier, which then generates a voltage output. So as pixel 1 is discharging, pixel 32 is halfway through its integration period. This sequential output is controlled by a 64-bit shift register. The shift register is controlled by the serial input pulse, which must happen on the 65th pulse of the clock. On that 65th pulse, the shift register is reset, which starts the sequence all over. The shift register may be reset as early as the 66th pulse (meaning the first clock pulse of a new output cycle).\\
\\
The voltage output (VO) is an analog value generated from this equation:
V'_out_' = Vdrk + (Re) (Ee) (tint)
\\
February 14, 2007, at 12:37 PM by Christopher Kucinski -
Changed line 17 from:
As light strikes a photodiode (pixel), photocurrent is generated and sent to (integrated with) the 'active integration circuitry' associated with that pixel. A sampling capacitor is charged directly proportionally to the light intensity and the integration time. The integration time is 64 clock pulses. Each capacitor discharges sequentially through an analog switch to an output amplifier.
to:
The clock (5-5000kHz) controls the integration time for each of the 64 pixels. Each pixel has 64 clock pulses to 'read' the light hitting it before the outputting the sensor data and the integration time is reset. Each pixel is reset sequentially - meaning pixel 2 will dump its data and be reset one clock pulse after pixel 1 and so on.\\
Added lines 19-21:
''How it Really Works''\\
As light strikes each photodiode (pixel), photocurrent is generated and sent to (integrated with) the 'active integration circuitry' associated with that pixel. The integration circuitry charges a sampling capacitor directly proportionally to the light intensity and the integration time. The integration time is 64 clock pulses (one pulse for every pixel). Each capacitor discharges sequentially through an analog switch to an output amplifier, which then generates a voltage output. So as pixel 1 is discharging, pixel 32 is halfway through its integration period. This sequential output is controlled by a 64-bit shift register. The shift register is controlled by the serial input pulse, which must happen on the 65th pulse of the clock. On that 65th pulse, the
\\
February 14, 2007, at 12:18 PM by Christopher Kucinski -
Changed line 17 from:
As light strikes a photodiode (pixel), photocurrent is generated and sent to (integrated with) the 'active integration circuitry' associated with that pixel. A sampling capacitor is charged directly proportionally to the light intensity and the integration time. The integration time is 64 clock pulses. As
to:
As light strikes a photodiode (pixel), photocurrent is generated and sent to (integrated with) the 'active integration circuitry' associated with that pixel. A sampling capacitor is charged directly proportionally to the light intensity and the integration time. The integration time is 64 clock pulses. Each capacitor discharges sequentially through an analog switch to an output amplifier.
February 14, 2007, at 12:17 PM by Christopher Kucinski -
Changed line 14 from:
Each of the 64 photodiodes measures 120m x 70m and are placed 55m apart, which translates to 200 dots-per-inch (DPI) sensor pitch.\\
to:
Each of the 64 photodiodes measures 120m x 70m and are placed 55m apart, which translates to 200 dots-per-inch (DPI) sensor pitch(resolution?).\\
Changed line 17 from:
As light strikes a photodiode (pixel), photocurrent is generated and sent to the 'active integration circuitry' associated with that pixel.
to:
As light strikes a photodiode (pixel), photocurrent is generated and sent to (integrated with) the 'active integration circuitry' associated with that pixel. A sampling capacitor is charged directly proportionally to the light intensity and the integration time. The integration time is 64 clock pulses. As
February 14, 2007, at 11:51 AM by Christopher Kucinski -
February 14, 2007, at 11:33 AM by Christopher Kucinski -
Added lines 16-18:
''How it Works''\\
As light strikes a photodiode (pixel), photocurrent is generated and sent to the 'active integration circuitry' associated with that pixel.
\\
February 14, 2007, at 11:29 AM by Christopher Kucinski -
Changed line 21 from:
#Input light source wavelength must be between 400 - 1000 nanometers. In terms of the color of that range, the photodiodes on the TSL-201 are responsive to just above the 'Near-UV' range (which is 200 - 400nm) and about half of the 'Near-Infrared range' (750 - 1400nm). The bell curve of the spectral responsivity peaks near 685-700nm (a range that humans would perceive as the color 'red').
to:
#Input light source wavelength must be between 400 - 1000 nanometers. In terms of the color of that range, the photodiodes on the TSL-201 are responsive to just above the 'Near-UV' range (which is 200 - 400nm) through about half of the 'Near-Infrared range' (750 - 1400nm) and all of the visible light in between. The bell curve of the spectral responsivity peaks near 685-700nm (a range that humans would perceive as the color 'red').
February 14, 2007, at 11:26 AM by Christopher Kucinski -
Changed line 14 from:
Each of the 64 photodiodes measures 120m x 70m and are placed 55m apart, which translates to 200 dots-per-inch (DPI) sensor pitch.
to:
Each of the 64 photodiodes measures 120m x 70m and are placed 55m apart, which translates to 200 dots-per-inch (DPI) sensor pitch.\\
Changed line 24 from:
'''Questions'''
to:
'''Questions'''\\
February 14, 2007, at 11:25 AM by Christopher Kucinski -
Changed line 25 from:
to:
''Terminology''
Changed lines 27-28 from:
#What is "Clamp Current?" (page 2)
#What is "Solder Reflow," "Load Resistance," and "Sensor Integration Time?" (table on page 3)
to:
#What is "Clamp Current?" (page 3)
#What is "Solder Reflow," "Load Resistance," and "Sensor Integration Time?" (table on page 3)
#
\\
''How this works''
#
February 14, 2007, at 11:23 AM by Christopher Kucinski -
Changed line 5 from:
[[http://www.taosinc.com/images/product/document/TSL201R-LF-E5.PDF | PDF from TAOS]]
to:
[[http://www.taosinc.com/images/product/document/TSL201R-LF-E5.PDF | PDF from Texas Advanced Optoelectronic Solutions]]
February 14, 2007, at 11:21 AM by Christopher Kucinski -
Changed line 28 from:
#
to:
#What is "Solder Reflow," "Load Resistance," and "Sensor Integration Time?" (table on page 3)
February 14, 2007, at 11:18 AM by Christopher Kucinski -
Changed lines 21-22 from:
#Input light source wavelength must be between 400 - 1000 nanometers. The photodiodes on the TSL-201 are responsive to just above the Near-UV range (which is 200 - 400nm) and about half of the Near-Infrared range (750 - 1400nm). The bell curve of the spectral responsivity peaks near 685-700nm (a range that humans would perceive as the color 'red').
to:
#Input light source wavelength must be between 400 - 1000 nanometers. In terms of the color of that range, the photodiodes on the TSL-201 are responsive to just above the 'Near-UV' range (which is 200 - 400nm) and about half of the 'Near-Infrared range' (750 - 1400nm). The bell curve of the spectral responsivity peaks near 685-700nm (a range that humans would perceive as the color 'red').
#It is recommended that a 0.01F to 0.1F capacitor with short leads is used to decouple the power supply lines close to the device package for optimum performance.
Deleted line 23:
\\
February 14, 2007, at 11:12 AM by Christopher Kucinski -
Changed line 21 from:
#Input light source wavelength must be between 400 - 1000 nanometers. So the TSL-201 is sensitive to just above the Near-UV range (which is 200 - 400nm) and about half of the Near-Infrared range (750 - 1400nm).
to:
#Input light source wavelength must be between 400 - 1000 nanometers. The photodiodes on the TSL-201 are responsive to just above the Near-UV range (which is 200 - 400nm) and about half of the Near-Infrared range (750 - 1400nm). The bell curve of the spectral responsivity peaks near 685-700nm (a range that humans would perceive as the color 'red').
February 14, 2007, at 11:06 AM by Christopher Kucinski -
Changed line 1 from:
[++'''Datasheet Report'''++]
to:
[++'''Datasheet Report - February 14 2007'''++]
February 14, 2007, at 11:05 AM by Christopher Kucinski -
Changed line 12 from:
On an eight-pin dual inline package, this ROHS-compliant linear sensor array uses a 64x1 array of photodiodes for a variety of intended uses, including "mark detection and code reading, optical character recognition (OCR), contact imaging, edge detection, and positioning, as well as optical linear and rotary encoding."\\
to:
On an eight-pin dual inline package, this ROHS-compliant linear sensor array uses a 64x1 array of photodiodes for a variety of intended uses, including "mark detection and code reading, optical character recognition (OCR), contact imaging, edge detection, and positioning, as well as optical linear and rotary encoding." This sensor includes internal control logic which needs only a serial-input (SI) and a clock input. \\
Changed lines 20-21 from:
#and can operate at a maximum of 5MHz.
#
to:
#The clock frequency range is 5 - 5000 kHz.
#Input light source wavelength must be between 400 - 1000 nanometers. So the TSL-201 is sensitive to just above the Near-UV range (which is 200 - 400nm) and about half of the Near-Infrared range (750 - 1400nm).
February 14, 2007, at 10:51 AM by Christopher Kucinski -
Added line 17:
Changed line 19 from:
#The operating temperature range is -25C to +85C, though the suggested maximum value is only 70C.
to:
#The operating temperature range is -25C to +85C, though the suggested maximum value is only +70C.
Added line 21:
#
February 14, 2007, at 10:48 AM by Christopher Kucinski -
Changed line 14 from:
Each of the 64 photodiodes measures 120 m by 70 m and are placed 55 m apart, which translates to 200 dots-per-inch (DPI) sensor pitch.
to:
Each of the 64 photodiodes measures 120m x 70m and are placed 55m apart, which translates to 200 dots-per-inch (DPI) sensor pitch.
Changed lines 17-19 from:
The recommended operating voltage of this device is between 4.5V - 5.5V, though +5.0V is the nominal value. and can operate at a maximum of 5MHz. The operating temperature range is -25C to +85C
to:
#The recommended operating voltage of this device is between 4.5V - 5.5V, though +5.0V is the nominal value.
#The operating temperature range is -25C to +85C, though the suggested maximum value is only 70C.
#and can operate at a maximum of 5MHz.
Changed lines 23-25 from:
#What is "Clamp Current?" (page 2 of Datasheet)
to:
#What is "Sensor Pitch?" (page 1 of Datasheet)
#What is "Clamp Current?" (page 2
)
February 14, 2007, at 10:44 AM by Christopher Kucinski -
Changed line 17 from:
The recommended operating voltage of this device is between 4.5V - 5.5V, though +5.0V is the nominal value. and can operate at a maximum of 5MHz.
to:
The recommended operating voltage of this device is between 4.5V - 5.5V, though +5.0V is the nominal value. and can operate at a maximum of 5MHz. The operating temperature range is -25C to +85C
February 14, 2007, at 10:42 AM by Christopher Kucinski -
Changed lines 20-22 from:
'''Questions'''
to:
'''Questions'''
#What is "Clamp Current?" (page 2 of Datasheet)
#
February 14, 2007, at 10:40 AM by Christopher Kucinski -
Changed lines 17-20 from:
The device is requires +5V and can operate at a maximum of 5MHz.
to:
The recommended operating voltage of this device is between 4.5V - 5.5V, though +5.0V is the nominal value. and can operate at a maximum of 5MHz.
\\
\\
'''Questions'''
February 14, 2007, at 10:36 AM by Christopher Kucinski -
February 14, 2007, at 10:31 AM by Christopher Kucinski -
Changed lines 14-17 from:
Each of the 64 photodiodes measures 120 m by 70 m and are placed 55 m apart, which translates to 200 dots-per-inch (DPI) sensor pitch. The device is requires +5V and can operate at a maximum of 5MHz.
to:
Each of the 64 photodiodes measures 120 m by 70 m and are placed 55 m apart, which translates to 200 dots-per-inch (DPI) sensor pitch.
\\
'''Operating Characteristics'''\\

The device is requires +5V and can operate at a maximum of 5MHz.
February 14, 2007, at 10:28 AM by Christopher Kucinski -
Changed line 12 from:
On an eight-pin dual inline package, this linear sensor array uses a 64x1 array of photodiodes for a variety of intended uses, including "mark detection and code reading, optical character recognition (OCR), contact imaging, edge detection, and positioning, as well as optical linear and rotary encoding."\\
to:
On an eight-pin dual inline package, this ROHS-compliant linear sensor array uses a 64x1 array of photodiodes for a variety of intended uses, including "mark detection and code reading, optical character recognition (OCR), contact imaging, edge detection, and positioning, as well as optical linear and rotary encoding."\\
Changed line 14 from:
Each of the 64 photodiodes measures 120 m by 70 m and are placed 55 m apart, which translates to 200 dots-per-inch (DPI) sensor pitch.
to:
Each of the 64 photodiodes measures 120 m by 70 m and are placed 55 m apart, which translates to 200 dots-per-inch (DPI) sensor pitch. The device is requires +5V and can operate at a maximum of 5MHz.
February 14, 2007, at 10:26 AM by Christopher Kucinski -
Changed line 8 from:
Available from [[http://www.mouser.com/search/ProductDetail.aspx?R=TSL201R-LFvirtualkey57530000virtualkey856-TSL201R-LF | Mouser]] for $7.20
to:
Available from [[http://www.mouser.com/search/ProductDetail.aspx?R=TSL201R-LFvirtualkey57530000virtualkey856-TSL201R-LF | Mouser]] for $7.20 each
Changed lines 12-14 from:
On an eight-pin dual inline package, this linear sensor array uses a 64x1 array of photodiodes for a variety of intended uses, including "mark detection and code reading, optical character recognition (OCR), contact imaging, edge detection, and positioning, as well as optical linear and rotary encoding."
to:
On an eight-pin dual inline package, this linear sensor array uses a 64x1 array of photodiodes for a variety of intended uses, including "mark detection and code reading, optical character recognition (OCR), contact imaging, edge detection, and positioning, as well as optical linear and rotary encoding."\\
\\
Each of the 64 photodiodes measures 120 m by 70 m and are placed 55 m apart, which translates to 200 dots-per-inch (DPI) sensor pitch.
February 14, 2007, at 10:15 AM by Christopher Kucinski -
Changed line 12 from:
On an eight-pin dual inline package, this linear sensor array uses a 64x1 array photodiodes .
to:
On an eight-pin dual inline package, this linear sensor array uses a 64x1 array of photodiodes for a variety of intended uses, including "mark detection and code reading, optical character recognition (OCR), contact imaging, edge detection, and positioning, as well as optical linear and rotary encoding."
February 14, 2007, at 10:12 AM by Christopher Kucinski -
Changed lines 8-12 from:
Available from [[http://www.mouser.com/search/ProductDetail.aspx?R=TSL201R-LFvirtualkey57530000virtualkey856-TSL201R-LF | Mouser]] for $7.20
to:
Available from [[http://www.mouser.com/search/ProductDetail.aspx?R=TSL201R-LFvirtualkey57530000virtualkey856-TSL201R-LF | Mouser]] for $7.20
\\
\\
'''Description'''\\
On an eight-pin dual inline package, this linear sensor array uses a 64x1 array photodiodes .
February 14, 2007, at 09:59 AM by Christopher Kucinski -
Changed lines 1-2 from:
http://www.taosinc.com/images/product/TSL201R.JPG
to:
[++'''Datasheet Report'''++]
http://www.taosinc.com/images/product/TSL201R.JPG
February 14, 2007, at 09:42 AM by Christopher Kucinski -
Changed lines 2-3 from:
[[http://www.taosinc.com/images/product/document/TSL201R-LF-E5.PDF]]
to:
\\
\\
[[http://www.taosinc.com/images/product/document/TSL201R-LF-E5.PDF | PDF from TAOS]]
\\
\\
Available from [[http://www.mouser.com/search/ProductDetail.aspx?R=TSL201R-LFvirtualkey57530000virtualkey856-TSL201R-LF | Mouser]] for $7.20
February 14, 2007, at 09:36 AM by Christopher Kucinski -
Added lines 1-3:
http://www.taosinc.com/images/product/TSL201R.JPG

[[http://www.taosinc.com/images/product/document/TSL201R-LF-E5.PDF]]