TLC4501 Datasheet, PDF (1/32 Pages) Texas Instruments – FAMILY OF SELF-CALIBRATING Self-CalE PRECISION CMOS RAIL-TO-RAIL OUTPUT OPERATIONAL AMPLIFIERS

TLC4501, TLC4501A, TLC4502, TLC4502A
FAMILY OF SELF-CALIBRATING (Self-Cal™)
PRECISION CMOS RAIL-TO-RAIL OUTPUT OPERATIONAL AMPLIFIERS
SLOS221A – MAY 1998 – REVISED JULY 1999
D Self-Calibrates Input Offset Voltage to
40 µV Max
D Low Input Offset Voltage Drift . . . 1 µV/°C
D Input Bias Current . . . 1 pA
D Open Loop Gain . . . 120 dB
D Rail-To-Rail Output Voltage Swing
D Stable Driving 1000 pF Capacitive Loads
D Gain Bandwidth Product . . . 4.7 MHz
D Slew Rate . . . 2.5 V/µs
D High Output Drive Capability . . . ±50 mA
D Calibration Time . . . 300 ms
D Characterized From – 55°C to 125°C
D Available in Q-Temp Automotive
HighRel Automotive Applications
Configuration Control / Print Support
Qualification to Automotive Standards
description
The TLC4501 and TLC4502 are the highest precision CMOS single supply rail-to-rail operational amplifiers
available today. The input offset voltage is 10 µV typical and 40 µV maximum. This exceptional precision,
combined with a 4.7-MHz bandwidth, 2.5-V/µs slew rate, and 50-mA output drive, is ideal for multiple
applications including: data acquisition systems, measurement equipment, industrial control applications, and
portable digital scales.
These amplifiers feature self-calibrating circuitry which digitally trims the input offset voltage to less than 40 µV
within the first 300 ms of operation. The offset is then digitally stored in an integrated successive approximation
register (SAR). Immediately after the data is stored, the calibration circuitry effectively drops out of the signal
path, shuts down, and the device functions as a standard operational amplifier.
3
IN+
2
IN–
Offset Control
+
–
Calibration Circuitry
8
VDD
D/A
5V
Power-On
Reset
Control
Logic
SAR
A/D
Oscillator
1
OUT
4
GND
Figure 1. Channel One of the TLC4502
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
LinEPIC and Self-Cal are trademarks of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1999, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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