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What is TSL257?

This electronic component, produced by the manufacturer "ams", performs the same function as "High-Sensitivity Light-to-Voltage Converter".


TSL257 Datasheet PDF - ams

Part Number TSL257
Description High-Sensitivity Light-to-Voltage Converter
Manufacturers ams 
Logo ams Logo 


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TSL257
High-Sensitivity Light-to-Voltage
Converter
General Description
The TSL257 is a high-sensitivity low-noise light-to-voltage
optical converter that combines a photodiode and a
transimpedance amplifier on a single monolithic CMOS
integrated circuit. Output voltage is directly proportional to
light intensity (irradiance) on the photodiode. The TSL257 has
a transimpedance gain of 320MΩ. The device has improved
offset voltage stability and low power consumption and is
supplied in a 3-lead clear plastic sidelooker package with an
integral lens. When supplied in the lead (Pb) free package, the
device is RoHS compliant.
Ordering Information and Content Guide appear at end of
datasheet.
Figure 1:
Added Value of Using TSL257
Key Benefits & Features
The benefits and features of TSL257, High-Sensitivity
Light-to-Voltage Converter are listed below:
Benefits
Enables Extremely Fast Response to Change
Enables Fast Response to Visible Light in
Range of 400nm to 700nm Wavelengths
Provides for High Sensitivity to Detect a Small
Change in Light
Provides Additional Sensitivity Advantages
Provides Full Dynamic Range
Features
Single Photo-Diode and Trans Impedance Architecture
160μs Output Rise-Time Response
High Irradiance Responsivity:
Typically 1.68V/(μW/cm2) at λp = 645nm
2x Gain Lens
Rail-To-Rail Output Swing
Converts Light Intensity to Output Voltage
Monolithic Silicon IC Containing Photodiode, Operational
Amplifier, and Feedback Components
High Sensitivity
Single Voltage Supply Operation (2.7V to 5.5V)
Low Noise (200μVrms Typ to 1kHz)
High Power-Supply Rejection (35dB at 1kHz)
Compact 3-Leaded Plastic Package
RoHS Compliant (-LF Package Only)
ams Datasheet
[v1-00] 2016-Jul-25
Page 1
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TSL257 equivalent
TSL257 − Electrical Characteristics
Electrical Characteristics
All limits are guaranteed. The parameters with min and max
values are guaranteed with production tests or
SQC (Statistical Quality Control) methods.
Figure 7:
Recommended Operating Conditions
Operating Conditions
All defined tolerances for external components in this
specification need to be assured over the whole operation
condition range and also over lifetime.
Symbol
VDD
TA
Parameter
Supply voltage
Operating free-air temperature range
Min
2.7
0
Nom
Max
5.5
70
Unit
V
°C
Figure 8:
Electrical Characteristics at VDD = 5V, TA = 25°C, λp = 470nm, RL = 10kΩ (unless otherwise noted) (1) (2)
Symbol
Parameter
Test Conditions Min Typ Max
Unit
VD Dark voltage
Ee = 0
0 15 mV
VOM
Maximum output voltage
swing
VDD = 4.5V, No Load
VDD = 4.5V, RL = 10kΩ
4
4.49
4.2
V
VO Output voltage
Ee = 1.54μW/cm2,
λp = 470nm (4)
1.6 2 2.4
V
αVD
Temperature coefficient of
dark voltage (VD)
TA = 0°C to 70°C
-15 μV/°C
λp = 428nm (3), (7)
1.18
Ne Irradiance responsivity
λp = 470nm (4), (7)
λp = 565nm (5), (7)
1.30 V/
1.58 (μW/cm2)
λp = 645nm (6), (7)
1.68
ams Datasheet
[v1-00] 2016-Jul-25
Page 5
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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for TSL257 electronic component.


Information Total 19 Pages
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