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Amplifiers. TLC2654 Datasheet |
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TLC2654, TLC2654A
Advanced LinCMOS LOW-NOISE CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS020G – NOVEMBER 1988 – REVISED APRIL 2001
D Input Noise Voltage
0.5 µV (Peak-to-Peak) Typ, f = 0 to 1 Hz
1.5 µV (Peak-to-Peak) Typ, f = 0 to 10 Hz
47 nV/√Hz Typ, f = 10 Hz
13 nV/√Hz Typ, f = 1 kHz
D High Chopping Frequency . . . 10 kHz Typ
D No Clock Noise Below 10 kHz
D No Intermodulation Error Below 5 kHz
D Low Input Offset Voltage
10 µV Max (TLC2654A)
D Excellent Offset Voltage Stability
With Temperature . . . 0.05 µV/°C Max
D AVD . . . 135 dB Min (TLC2654A)
D CMRR . . . 110 dB Min (TLC2654A)
D kSVR . . . 110 dB Min
D Single-Supply Operation
D Common-Mode Input Voltage Range
Includes the Negative Rail
D No Noise Degradation With External
Capacitors Connected to VDD –
D Available in Q-Temp Automotive
HighRel Automotive Applications
Configuration Control/Print Support
Qualification to Automotive Standards
description
The TLC2654 and TLC2654A are low-noise
chopper-stabilized operational amplifiers using
the Advanced LinCMOS process. Combining
this process with chopper-stabilization circuitry
makes excellent dc precision possible. In addition,
circuit techniques are added that give the
TLC2654 and TLC2654A superior noise perfor-
mance.
D, JG, OR P PACKAGE
(TOP VIEW)
CXA
IN –
IN +
VDD –
1
2
3
4
8 CXB
7 VDD +
6 OUT
5 CLAMP
D, J, OR N PACKAGE
(TOP VIEW)
CXB
CXA
NC
IN –
IN +
NC
VDD –
1
2
3
4
5
6
7
14 INT/EXT
13 CLK IN
12 CLK OUT
11 VDD +
10 OUT
9 CLAMP
8 C RETURN
FK PACKAGE
(TOP VIEW)
NC
3 2 1 20 19
4 18
CLK OUT
NC 5
17 NC
IN – 6
16 VDD +
NC 7
15 NC
IN + 8
14 OUT
9 10 11 12 13
NC – No internal connection
Chopper-stabilization techniques provide for extremely high dc precision by continuously nulling input offset
voltage even during variations in temperature, time, common-mode voltage, and power-supply voltage. The
high chopping frequency of the TLC2654 and TLC2654A (see Figure 1) provides excellent noise performance
in a frequency spectrum from near dc to 10 kHz. In addition, intermodulation or aliasing error is eliminated from
frequencies up to 5 kHz.
This high dc precision and low noise, coupled with the extremely high input impedance of the CMOS input stage,
makes the TLC2654 and TLC2654A ideal choices for a broad range of applications such as low-level,
low-frequency thermocouple amplifiers and strain gauges and wide-bandwidth and subsonic circuits. For
applications requiring even greater dc precision, use the TLC2652 or TLC2652A devices, which have a
chopping frequency of 450 Hz.
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.
Advanced LinCMOS is a trademark of Texas Instruments.
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 2001, 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.
•POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1
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TLC2654, TLC2654A
Advanced LinCMOS LOW-NOISE CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS020G – NOVEMBER 1988 – REVISED APRIL 2001
description (continued)
The TLC2654 and TLC2654A common-mode
input voltage range includes the negative rail,
thereby providing superior performance in either
single-supply or split-supply applications, even at
power supply voltage levels as low as ± 2.3 V.
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREQUENCY
10 k
Two external capacitors are required to operate
the device; however, the on-chip chopper-control
circuitry is transparent to the user. On devices in
the 14-pin and 20-pin packages, the control
circuitry is accessible, allowing the user the option
of controlling the clock frequency with an external
frequency source. In addition, the clock threshold
of the TLC2554 and TLC2654A requires no level
shifting when used in the single-supply configura-
tion with a normal CMOS or TTL clock input.
1k
Typical 250-Hz
Chopper-Stabilized
Operational Amplifier
100
TLC2654
Innovative circuit techniques used on the
TLC2654 and TLC2654A allow exceptionally fast
overload recovery time. An output clamp pin is
available to reduce the recovery time even further.
The device inputs and outputs are designed to
10
1
10 100
f – Frequency – Hz
Figure 1
1k
withstand – 100-mA surge currents without
sustaining latch-up. In addition, the TLC2654 and TLC2654A incorporate internal ESD-protection circuits that
prevent functional failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015; however,
exercise care in handling these devices, as exposure to ESD may result in degradation of the device parametric
performance.
The C-suffix devices are characterized for operation from 0°C to 70°C. The I-suffix devices are characterized
for operation from – 40°C to 85°C. The Q-suffix devices are characterized for operation from – 40°C to 125°C.
The M-suffix devices are characterized for operation over the full military temperature range of – 55°C to125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
VIOmax
AT 25°C
SMALL
8 PIN
CERAMIC
PLASTIC
SMALL
14 PIN
CERAMIC
PLASTIC
OUTLINE
DIP
DIP OUTLINE DIP
DIP
(D)
(JG)
(P)
(D)
(J) (N)
0°C to 70°C
10 µV TLC2654AC-8D
20 mV TLC2654C-8D
— TLC2654ACP TLC2654AC-14D — TLC2654ACN
— TLC2654CP TLC2654C-14D
— TLC2654CN
– 40°C to 85°C
10 µV TLC2654AI-8D
20 µV TLC2654I-8D
— TLC2654AIP TLC2654AI-14D
—
TLC2654IP
TLC2654I-14D
— TLC2654AIN
— TLC2654IN
– 40°C to 125°C
10 µV TLC2654AQ-8D
20 µV TLC2654Q-8D
—
—
—
—
—
—
——
——
– 55°C to 125°C
10 µV TLC2654AM-8D TLC2654AMJG TLC2654AMP TLC2654AM-14D TLC2654AMJ TLC2654AMN
20 µV TLC2654M-8D TLC2654MJG TLC2654MP TLC2654M-14D TLC2654MJ TLC2654MN
The 8-pin and 14-pin D packages are available taped and reeled. Add R suffix to device type (e.g., TLC2654AC-8DR).
20 PIN
CERAMIC
DIP
(FK)
—
—
—
—
—
—
TLC2654AMFK
TLC2654MFK
•2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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functional block diagram
IN + 5
IN –
4
TLC2654, TLC2654A
Advanced LinCMOS LOW-NOISE CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS020G – NOVEMBER 1988 – REVISED APRIL 2001
VDD +
11
+
–
B
A
+
–
Null
B
A
1
Main
B
2
CXB
CXA
Clamp
Circuit
CIC
A
9
CLAMP
10
OUT
Compensation-
Biasing
Circuit
External Components
78
C RETURN
VDD –
Pin numbers shown are for the D (14 pin), J, and N packages.
•POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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