OPT301 BURR-BROWN | Alldatasheet
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Technical content
© 1994 Burr-Brown Corporation PDS-1228B Printed in U.S.A. January, 1994 FPO 70%
FEATURES
l PHOTODIODE SIZE: 0.090 x 0.090 inch (2.29 x 2.29mm) l 1M Ω FEEDBACK RESISTOR l HIGH RESPONSIVITY: 0.47A/W (650nm) l IMPROVED UV RESPONSE l LOW DARK ERRORS: 2mV l BANDWIDTH: 4kHz l WIDE SUPPLY RANGE: ±2.25 to ±18V l LOW QUIESCENT CURRENT: 400 µA l HERMETIC TO-99
APPLICATIONS
l LABORATORY INSTRUMENTATION l POSITION AND PROXIMITY SENSORS l PHOTOGRAPHIC ANALYZERS l SMOKE DETECTORS
DESCRIPTION
The OPT301 is an opto-electronic integrated circuit containing a photodiode and transimpedance amplifier on a single dielectrically isolated chip. The transimpedance amplifier consists of a precision FET- input op amp and an on-chip metal film resistor. The 0.09 x 0.09 inch photodiode is operated at zero bias for excellent linearity and low dark current. The integrated combination of photodiode and transimpedance amplifier on a single chip eliminates the problems commonly encountered in discrete de- signs such as leakage current errors, noise pick-up and gain peaking due to stray capacitance. The OPT301 operates over a wide supply range (±2.25 to ±18V) and supply current is only 400µA. It is packaged in a hermetic TO-99 metal package with a glass window, and is specified for the –40°C to 85°C temperature range. INTEGRATED PHOTODIODE AND AMPLIFIER 1M Ω OPT301 40pF 75Ω VO λ OPT301 SPECTRAL RESPONSIVITY Voltage Output (V/µW) Wavelength (nm) 100 200 300 400 500 600 700 800 900 1000 1100 0.5 0.4 0.3 0.2 0.1 0.5 0.4 0.3 0.2 0.1 Photodiode Responsivity (A/W) Infrared Blue Green Yellow RedUltraviolet Using Internal 1M Ω Resistor International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111 Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
PARAMETER CONDITIONS MIN TYP MAX UNITS RESPONSIVITY Photodiode Current 650nm 0.47 A/W Voltage Output 650nm 0.47 V/ µW vs Temperature 200 ppm/ °C Unit-to-Unit Variation 650nm ±5% Nonlinearity (1) FS Output = 10V 0.01 % of FS Photodiode Area (0.090 x 0.090in) 0.008 in 2 (2.29 x 2.29mm) 5.2 mm 2 DARK ERRORS, RTO (2) Offset Voltage, Output ±0.5 ±2m V vs Temperature ±10 µV/°C vs Power Supply V S = ±2.25V to ±18V 10 100 µV/V Voltage Noise Measured BW = 0.1 to 100kHz 160 µVrms RESISTOR—1M Ω Internal Resistance 1M Ω Tolerance ±0.5 ±2% vs Temperature 50 ppm/ °C FREQUENCY RESPONSE Bandwidth, Large or Small-Signal, –3dB 4 kHz Rise Time, 10% to 90% 90 µs Settling Time, 1% FS to Dark 240 µs 0.1% FS to Dark 350 µs 0.01% FS to Dark 900 µs Overload Recovery Time 100% overdrive, V S = ±15V 240 µs 100% overdrive, VS = ±5V 500 µs 100% overdrive, VS = ±2.25V 1000 µs OUTPUT Voltage Output R L = 10kΩ (V+) – 1.25 (V+) – 0.65 V Capacitive Load, Stable Operation 10 nF Short-Circuit Current ±18 mA POWER SUPPLY Specified Operating Voltage ±15 V Operating Voltage Range ±2.25 ±18 V Quiescent Current I O = 0 ±0.4 ±0.5 mA TEMPERATURE RANGE Specification –40 +85 °C Operating/Storage –55 +125 °C Thermal Resistance, θJA 200 °C/W NOTES: (1) Deviation in percent of full scale from best-fit straight line. (2) Referred to Output. Includes all error sources. SPECIFICATIONS ELECTRICAL At TA = +25°C, VS = ±15V, λ = 650nm, internal 1MΩ feedback resistor, unless otherwise noted. PHOTODIODE SPECIFICATIONS At TA = +25°C, unless otherwise noted. Photodiode of OPT301 PARAMETER CONDITIONS MIN TYP MAX UNITS Photodiode Area (0.090 x 0.090in) 0.008 in 2 (2.29 x 2.29mm) 5.1 mm 2 Current Responsivity 650nm 0.47 A/W Dark Current V D = 0V(1) 500 fA vs Temperature doubles every 10°C Capacitance V D = 0V(1) 4000 pF NOTE: (1) Voltage Across Photodiode.
SPECIFICATIONS (CONT) ELECTRICAL Op Amp Section of OPT301 (1) At TA = +25°C, VS = ±15V, unless otherwise noted. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. OPT301 Op Amp PARAMETER CONDITIONS MIN TYP MAX UNITS INPUT Offset Voltage ±0.5 mV vs Temperature ±5 µV/°C vs Power Supply V S = ±2.25V to ±18V 10 µV/V Input Bias Current 1p A vs Temperature doubles every 10°C NOISE Input Voltage Noise Voltage Noise Density, f=10Hz 30 nV/ √Hz f=100Hz 25 nV/ √Hz f=1kHz 15 nV/ √Hz Current Noise Density, f=1kHz 0.8 fA/ √Hz INPUT VOLTAGE RANGE Common-Mode Input Range ±14.4 V Common-Mode Rejection 106 dB INPUT IMPEDANCE Differential 1012||3 Ω ||pF Common-Mode 1012||3 Ω ||pF OPEN-LOOP GAIN Open-Loop Voltage Gain 120 dB FREQUENCY RESPONSE Gain-Bandwidth Product 380 kHz Slew Rate 0.5 V/ µs Settling Time 0.1% 4 µs 0.01% 5 µs OUTPUT Voltage Output R L = 10kΩ (V+) – 1.25 (V+) – 0.65 V Short-Circuit Current ±18 mA POWER SUPPLY Specified Operating Voltage ±15 V Operating Voltage Range ±2.25 ±18 V Quiescent Current I O = 0 ±0.4 ±0.5 mA NOTE: (1) Op amp specifications provided for information and comparison only.
This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with ap- propriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. NC NC–In 1M Ω Feedback Common OutputV– NOTE: Metal package is internally connected to common (Pin 8). 3 5
7 Photodiode
PACKAGE INFORMATION
PRODUCT PACKAGE NUMBER (1) OPT301M 8-Pin TO-99 001-1 NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. ABSOLUTE MAXIMUM RATINGS
TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = ±15V, λ = 650nm, unless otherwise noted. NORMALIZED SPECTRAL RESPONSIVITY Normalized Current or Voltage Output Wavelength (nm) 100 200 300 400 500 600 700 800 900 1000 1100 1.0 0.8 0.6 0.4 0.2 650nm (0.47A/W) (0.52A/W) VOLTAGE RESPONSIVITY vs RADIANT POWER Radiant Power (µW) Output Voltage (V) 0.01 0.1 10 100 1k 1 0.1 0.01 0.001 R F = 1M Ω R F = 100k Ω R F = 10k Ω R F = 10M Ω λ = 650nm VOLTAGE RESPONSIVITY vs IRRADIANCE Irradiance (W/m2) Output Voltage (V) 0.001 0.01 1 10 100 0.1 0.1 0.01 0.001 R F = 1M Ω R F = 100k Ω R F = 10k Ω R F = 10M Ω λ = 650nm DISTRIBUTION OF RESPONSIVITY Units (%) Responsivity (A/W) 0.45 Distribution Totals 100% λ = 650nm Laboratory Test Data RESPONSE vs INCIDENT ANGLE Relative Response Incident Angle (°) 1.0 0.8 0.6 0.4 0.2 ±20 ±40 ±60 ±80 1.0 0.8 0.6 0.4 0.2 θ VOLTAGE OUTPUT RESPONSIVITY vs FREQUENCY Responsivity (V/µW) Frequency (Hz) 100 0.1 0.01 0.001 1k 10k 100k 1M R F = 10MΩ R F = 3.3MΩ R F = 1MΩ R F = 330kΩ C EXT = 30pF R F = 100kΩ C EXT = 90pF R F = 33kΩ C EXT = 180pF R F = 10kΩ C EXT = 350pF λ = 650nm
TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = ±15V, λ = 650nm, unless otherwise noted. SMALL-SIGNAL DYNAMIC RESPONSE LARGE-SIGNAL DYNAMIC RESPONSE 20mV/div 2V/div 100µs/div 100µs/div QUIESCENT CURRENT vs TEMPERATURE Quiescent Current (mA) Temperature (°C) –75 0.6 0.5 0.4 0.3 0.2 0.1 –50 –25 0 25 50 75 100 125 VS = ±15V VS = ±2.25V Dice OUTPUT NOISE VOLTAGE vs MEASUREMENT BANDWIDTH Measurement Bandwidth (Hz) Noise Voltage (µVrms) 1 10 1k 10k 100k 100 1000 100 0.1 R F = 10M Ω R F = 1M Ω R F = 100kΩ C EXT = 90pF R F = 100M Ω R F = 10kΩ C EXT = 350pF Dotted lines show noise beyond the signal bandwidth. NOISE EFFECTIVE POWER vs MEASUREMENT BANDWIDTH Measurement Bandwidth (Hz) Noise Effective Power (W) 1 10 1k 10k 100k 100 10–7 10–8 10–9 10–10 10–11 10–12 10–13 10–14 Dotted lines indicate noise measured beyond the signal bandwidth. λ = 650nm R F = 100M R F = 10M R F = 1M R F = 100k R F = 10k
FIGURE 5. “T” Feedback Network. FIGURE 7. Differential Light Measurement. FIGURE 8. Current Output Circuit. FIGURE 6. Summing Output of Two OPT301s. Advantages: High gain with low resistor values. Less sensitive to circuit board leakage.
1 R 1
FIGURE 9. Single Power Supply Operation. FIGURE 10. Output Filter to Reduce Noise. FIGURE 11. Differential Light Measurement. NOTE: (1) Zener diode or other shunt regulator.