TC7650CPD 반도체 회로 부품 판매점
CHOPPER-STABILIZED OPERATIONAL AMPLIFIER
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 TelCom Semiconductor |
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TC7650
CHOPPER-STABILIZED OPERATIONAL AMPLIFIER
FEATURES
s Low Input Offset Voltage ......................... 0.7µV Typ
s Low Input Offset Voltage Drift ......... 0.05µV/°C Max
s Low Input Bias Current ............................ 10pA Max
s High Impedance Differential CMOS Inputs .... 1012Ω
s High Open-Loop Voltage Gain ................ 120dB Min
s Low Input Noise Voltage ............................ 2.0µVp-p
s High Slew Rate .......................................... 2.5V/µsec
s Low-Power Operation ..................................... 20mW
s Output Clamp Speeds Recovery Time
s Compensated Internally for Stable Unity Gain
Operation
s Direct Replacement for ICL7650
s Available in 8-Pin Dip and 14-Pin Dip
ORDERING INFORMATION
Part No.
TC7650CPA
TC7650CPD
Package
8-Pin Plastic DIP
14-Pin Plastic DIP
Temperature
Range
0°C to +70°C
0°C to +70°C
Max
VOS
5µV
5µV
GENERAL DESCRIPTION
The TC7650 CMOS chopper-stabilized operational
amplifier practically removes offset voltage error terms
from system error calculations. The 5µV maximum VOS
specification, for example, represents a 15 times improve-
ment over the industry-standard OP07E. The 50nV/°C off-
set drift specification is over 25 times lower than the OP07E.
The increased performance eliminates VOS trim proce-
dures, periodic potentiometer adjustment and the reliability
problems caused by damaged trimmers.
The TC7650 performance advantages are achieved
without the additional manufacturing complexity and cost
incurred with laser or "zener zap" VOS trim techniques.
The TC7650 nulling scheme corrects both DC VOS
errors and VOS drift errors with temperature. A nulling
amplifier alternately corrects its own VOS errors and the main
amplifier VOS error. Offset nulling voltages are stored on two
user-supplied external capacitors. The capacitors connect
to the internal amplifier VOS null points. The main amplifier
input signal is never switched. Switching spikes are not
present at the TC7650 output.
The 14-pin dual-in-line package (DIP has an external
oscillator input to drive the nulling circuitry for optimum noise
performance. Both the 8 and 14-pin DIPs have an output
voltage clamp circuit to minimize overload recovery time.
2
3
4
5
FUNCTIONAL BLOCK DIAGRAM
OUTPUT
CLAMP
INPUTS
OUTPUT CLAMP
CIRCUIT
MAIN
AMPLIFIER
NULL
B
A
INTERMOD
COMPENSATION
B
NULL
AMPLIFIER
NULL
* FOR 8-PIN DIP, CONNECT TO VSS.
OSCILLATOR
14-PIN DIP ONLY
INT/EXT
EXT CLK IN
CLK OUT
AB
CEXT
OUTPUT
BA
CEXT
TC7650
*CRET
TELCOM SEMICONDUCTOR, INC.
PIN CONFIGURATIONS
8-Pin DIP
CA 1
(–) INPUT 2
(+) INPUT 3
VSS 4
TC7650CPA
8 CB
7 VDD
6 OUTPUT
5 CLAMP
6
14-Pin DIP
CB 1
CA 2
NC
(GUARD)
3
(–) INPUT 4
(+) INPUT 5
NC
(GUARD)
6
VSS 7
TC7650CPD
14 INT/EXT
13
EXT CLK
INPUT
12
INT CLK
OUTPUT
11 VDD
10 OUTPUT
9
OUTPUT
CLAMP
8 CRETN
NC = NO INTERNAL CONNECTION
TC7650-5 9/11/96
3-273
7
8
CHOPPER-STABILIZED
OPERATIONAL AMPLIFIER
TC7650
ABSOLUTE MAXIMUM RATINGS*
Total Supply Voltage (VDD to VSS) .............................. 18V
Input Voltage ........................ (VDD + 0.3V) to (VSS – 0.3V)
Storage Temperature Range ................ – 65°C to +150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
Voltage on Oscillator Control Pins ................... VDD to VSS
Output Short Circuit Duration ............................. Indefinite
Current Into Any Pin ................................................. 10mA
While Operating (Note 3) .................................. 100µA
Operating Temperature Range
C Device ................................................ 0°C to +70°C
Package Power Dissipation (TA ≤ 70°C)
8-Pin Plastic DIP ............................................. 730mW
14-Pin Plastic DIP ...........................................800mW
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operational sections of the specifications is not implied.
Exposure to Absolute Maximum Rating Conditions for extended periods
may affect device reliability.
ELECTRICAL CHARACTERISTICS: VDD = +5V, VSS = –5V, CA = CB = 0.1µF, TA = 25°C, unless otherwise
indicated.
Symbol
Parameter
Test Conditions
Min Typ Max Units
Input
VOS
∆VOS/∆T
IBIAS
IOS
eNP-P
IN
RIN
CMVR
CMRR
Output
A
VOUT
Dynamic
BW
SR
tR
fCH
Input Offset Voltage
Input Offset Voltage
Average Temperature
Coefficient
Offset Voltage vs. Time
Input Bias Current
Input Offset Current
Input Noise Voltage
Input Noise Current
Input Resistance
Common-Mode
Voltage Range
Common-Mode
Rejection Ratio
TA = +25°C
Over Operating Temp Range
Operating Temperature Range
TA = +25°C
0°C ≤ TA ≤ +70°C
–25°C ≤ TA ≤ +85°C
RS = 100Ω, 0 to 10Hz
f = 10 Hz
CMVR = –5V to +1.5V
Large Signal Voltage
Gain
Output Voltage Swing (Note 2)
Clamp ON Current
Clamp OFF Current
RL = 10kΩ
RL = 10kΩ
RL = 100kΩ
RL = 100kΩ
(Note 1)
– 4V < VOUT < +4V
(Note 1)
Unity-Gain Bandwidth
Slew Rate
Rise Time
Overshoot
Internal Chopping
Frequency
Unity Gain (+1)
CL = 50 pF, RL = 10kΩ
Pins 12–14 Open (DIP)
— ±0.7 ±5 —
— ± 1.0 — µV
— 0.01 0.05 µV/°C
— 100 — nV/
month
— 1.5 10 pA
— 35 150 pA
— 100 400 pA
— 0.5 — pA
— 2 — µVP-P
— 0.01 — pA/√Hz
— 1012
Ω
– 5 – 5.2 +1.6 V
to +2
120 130 — dB
120 130
—
±4.7 ±4.85
— ±4.95
—
—
25 70 200
—1—
dB
V
V
µA
pA
— 2.0 — MHz
— 2.5 — V/µsec
— 0.2 — µsec
— 20 — %
120 200 375 Hz
3-274
TELCOM SEMICONDUCTOR, INC.
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TC7650CPD amplifier
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