TC901
Dual Auto-Zeroed Operational Amplifiers
FEATURES
s
Second-Generation Monolithic,
Chopper-Stabilized Op Amp
s
No External Capacitors Required
s
Single-Supply Operation ...........
鹵
15V or 5V to 32V
s
Supply Current ............................ 450
碌
A at 15V, Typ
s
Input Offset Voltage ................................... 7
碌
V, Typ
s
Common-Mode Rejection Ratio ............ 140dB, Typ
s
Open-Loop Gain ............ 140dB Into 10k Load, Typ
s
Input Noise ......................... 5
碌
V at 10Hz Bandwidth
s
Pinout Compatible With ICL7650
s
Lowest Parts Count Chopper Op Amp
PIN CONFIGURATION
(DIP and SOIC)
GENERAL DESCRIPTION
The TC901 is a monolithic, auto-zeroed operational
amplifier. It is a second-generation design of the TC91X
CMOS chopper-stabilized op-amps with on-chip capacitors.
Elimination of the external capacitors allows the de-
signer to increase reliability, lower cost, and simplify design
by lowering parts count.
Since the TC901 is an auto-zeroing op amp, input offset
voltage is very low. More important, there is almost zero drift
with time. This eliminates production line adjustments, as
well as periodic calibration.
Notable electrical characteristics are low supply cur-
rent (450碌A(chǔ), typical), single-supply operation (5V to 32V),
low input offset voltage (7碌V, typical), low noise (<5碌V
P-P
,
typical, for a 10Hz bandwidth), and fast recovery from
saturation without the use of external clamp circuitry.
This device is supplied in 8-pin plastic DIP and plastic
SOIC packages. It is pin compatible with bipolar, CMOS,
JFET and other chopper-stabilized op-amps using the in-
dustry-standard 741 pinout.
NC 1
鈥揑NPUT 2
+INPUT 3
VSS 4
鈥?/div>
+
TC901CPA
8 NC
7 VDD
6 OUTPUT
5 NC
NC 1
鈥揑NPUT 2
+INPUT 3
VSS 4
鈥?/div>
+
8 NC
7 VDD
6 OUTPUT
TC901COA 5 NC
ORDERING INFORMATION
Part No.
TC901COA
TC901CPA
Package
8-Pin SOIC
8-Pin Plastic DIP
Temperature
Range
0擄C to +70擄C
0擄C to +70擄C
NC = NO INTERNAL CONNECTION
FUNCTIONAL BLOCK DIAGRAM
VDD
4
VSS
7
VOS CORRECTION AMPLIFIER
TC901
A
*
B
B
*
A
+INPUT
3
鈥揑NPUT
2
+
鈥?/div>
INTERNAL
OSCILLATOR
(fOSC
鈮?/div>
200 Hz)
+
+
鈥?/div>
MAIN
AMPLIFIER
鈥?/div>
LOW IMPEDANCE
OUTPUT BUFFER
6
OUTPUT
NOTE:
Internal capacitors. No external capacitors required.
漏 2001 Microchip Technology Inc.
DS21480A
TC901- 7 9/5/96
TC901CPA相關(guān)型號(hào)PDF文件下載
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