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TC911A

Status: End of Life

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Device Overview

Summary

The TC911 CMOS auto-zeroed operational amplifier is the first complete monolithic chopper-stabilized ampli-fier. Chopper operational amplifiers like the ICL7650/7652 and LTC1052 require user-supplied, external offset compensation storage capacitors. External capacitors are not required with the TC911. Just as easy to use as the conventional OP07 type amplifier, the TC911 significantly reduces offset voltage errors. Pinout matches the OP07/741/7650 8-pin mini-DIP configuration. Several system benefits arise by eliminating the external chopper capacitors: lower system parts count, reduced assembly time and cost, greater system reliability, reduced PC board layout effort and greater board area utilization. Space savings can be significant in multiple-amplifier designs. Electrical specifications include 15mV maximum offset voltage, 0.15mV/°C maximum offset voltage temperature coefficient. Offset voltage error is five times lower than the premium OP07E bipolar device. The TC911 improves offset drift performance by eight times. The TC911 operates from dual or single power supplies. Supply current is typically 350mA. Single 4.5V to 16V supply operation is possible, making single 9V battery operation possible. The TC911 is available in 2 package types: 8-pin plastic DIP and SOIC.

Parametrics
Name
Value
Temp. Range (°C)
-25°C to +85°C
Vos Max (µV)
15
# per Package
1
Iq Typical (µA)
350
Iq Max (µA)
600
GBWP (kHz)
1500
Operating Voltage Range (V)
4.5 to 16
Device Description
Linear High Precision Op Amps-Auto Zero
PSRR Min (dB)
112
CMRR Min (dB)
110
Vos/Ta (uV/°C)
0.15
Ib (pA)
70
Aol (dB)
115
PM (deg)
45
Unity Gain Stable
Yes
Slew Rate V/uS
2.5

Documents

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Data Sheet

11/08/2005
251KB

Application Notes

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