19-0960; Rev 2; 1/00
Chopper-Stabilized Op Amps
General Description
Maxim’s ICL7650/ICL7653 are chopper-stabilized amplifiers, ideal for low-level signal processing applications. Featuring high performance and versatility, these devices combine low input offset voltage, low input bias current, wide bandwidth, and exceptionally low drift over time and temperature. Low offset is achieved through a nulling scheme that provides continuous error correction. A nulling amplifier alternately nulls itself and the main amplifier. The result is an input offset voltage that is held to a minimum over the entire operating temperature range.
The ICL7650B/ICL7653B are exact replacements for Intersil’s ICL7650B/ICL7653B. These devices have a 10µV max offset voltage, a 0.1µV/°C max input offset voltage temperature coefficient, and a 20pA max bias current—all specified over the commercial temperature range.
A 14-pin version is available that can be used with either an internal or external clock. The 14-pin version has an output voltage clamp circuit to minimize overload recovery time.
Applications
Condition Amplifier
Precision Amplifier
Instrumentation Amplifier
Thermocouples
Thermistors
Strain Gauges
Typical Operating Circuit
CLAMP |
|
|
INPUT |
|
|
ICL7650 |
OUTPUT |
|
C |
||
ICL7653 |
||
|
R |
|
C |
INVERTING AMPLIFIER |
|
|
||
|
WITH OPTIONAL CLAMP |
Features
♦ICL7650/53 are Improved Second Sources to ICL7650B/53B
♦Lower Supply Current: 2mA
♦Low Offset Voltage: 1µV
♦No Offset Voltage Trimming Needed
♦High-Gain CMRR and PSRR: 120dB min
♦Lower Offset Drift with Time and Temperature
♦Extended Common-Mode Voltage Range
♦Low DC Input Bias Current: 10pA
♦Monolithic, Low-Power CMOS Design
Ordering Information
PART |
TEMP. RANGE |
PIN-PACKAGE |
|
|
|
|
|
ICL7650CSA |
0°C to +70°C |
8 SO |
|
ICL7650CSD |
0°C to +70°C |
14 SO |
|
|
|
|
|
ICL7650CPA |
0°C to +70°C |
8 |
Plastic DIP |
|
|
|
|
ICL7650CPD |
0°C to +70°C |
14 Plastic DIP |
|
|
|
|
|
ICL7650CTV |
0°C to +70°C |
8 |
TO-99 |
|
|
|
|
ICL7650C/D |
0°C to +70°C |
Dice |
|
|
|
|
|
ICL7650IJA |
-20°C to +85°C |
8 |
CERDIP |
|
|
|
|
ICL7650IJD |
-20°C to +85°C |
14 CERDIP |
|
|
|
|
|
ICL7650MTV |
-55°C to +125°C |
8 CERDIP |
|
ICL7650MJD |
-55°C to +125°C |
14 CERDIP |
|
|
|
|
|
ICL7650BCSA |
0°C to +70°C |
8 SO |
|
|
|
|
|
ICL7650BCSD |
0°C to +70°C |
14 SO |
|
|
|
|
|
ICL7650BCPA |
0°C to +70°C |
8 |
Plastic DIP |
|
|
|
|
ICL7650BCPD |
0°C to +70°C |
14 Plastic DIP |
|
|
|
|
|
ICL7650BCTV |
0°C to +70°C |
8 TO-99 |
|
|
|
|
|
ICL7650BC/D |
0°C to +70°C |
Dice |
|
ICL7653CSA |
0°C to +70°C |
8 SO |
|
|
|
|
|
ICL7653CPA |
0°C to +70°C |
8 |
Plastic DIP |
|
|
|
|
ICL7653CTV |
0°C to +70°C |
8 |
TO-99 |
|
|
|
|
ICL7653IJA |
-20°C to +85°C |
8 |
CERDIP |
|
|
|
|
ICL7653MTV |
-55°C to +125°C |
8 CERDIP |
|
ICL7653BCSA |
0°C to +70°C |
8 SO |
|
|
|
|
|
ICL7653BCPA |
0°C to +70°C |
8 |
Plastic DIP |
|
|
|
|
ICL7653BCTV |
0°C to +70°C |
8 TO-99 |
|
|
|
|
|
Pin Configurations appear at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
ICL7650/ICL7650B/ICL7653/ICL7653B
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
ICL7650/ICL7650B/ICL7653/ICL7653B
Chopper-Stabilized Op Amps
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V+ to V-).............................................. |
|
18V |
Input Voltage ........................................ |
(V+ + 0.3V) to (V- - 0.3V) |
|
Voltage on Oscillator Control Pins |
|
|
(except EXT/CLOCK IN)............................................. |
|
V+ to V- |
Voltage on EXT/CLOCK IN .................. |
(V+ + 0.3V) to (V+ - 6.0V) |
|
Duration of Output Short Circuit .................................... |
|
Indefinite |
Current into Any Pin ............................................................ |
|
10mA |
Current into Any Pin while Operating (Note 1)................... |
100µA |
|
Continuous Total Power Dissipation (TA = +70°C) |
|
|
8-Pin SO (derate 5.88mW/°C above +70°C)............... |
471mW |
|
8-Pin PDIP (derate 6.9mW/°C above +70°C)............... |
552mW |
|
8-Pin CERDIP (derate 8.0mW/°C above +70°C)......... |
640mW |
8-Pin TO-99 (derate 6.7mW/°C above +70°C)............ |
533mW |
|
14-Pin SO (derate 8.3mW/°C above +70°C) |
............... |
667mW |
14-Pin PDIP (derate 10.0mW/°C above +70°C).......... |
800mW |
|
14-Pin CERDIP (derate 9.1mW/°C above +70°C)....... |
727mW |
|
Operating Temperature Ranges |
|
|
ICL765_C_ _/ICL755_BC__ ............................... |
0°C to +70°C |
|
ICL765_I__/ICL755_BI__................................ |
- 20°C to +85°C |
|
ICL765_M__/ICL755_BM__.......................... |
- 55°C to +125°C |
|
Storage Temperature Range ............................. |
- 65°C to +150°C |
|
Junction Temperature ...................................................... |
|
+150°C |
Lead Temperature (soldering, 10s) ................................. |
|
+300°C |
Note 1: Maxim recommends limiting the input current to 100µA to avoid latchup problems. A value of 1mA is typically safe; however, this is not guaranteed.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond 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—ICL7650B/ICL7653B
(Circuit of Figure 1, V+ = +5V, V- = -5V, TA = +25°C, unless otherwise noted.)
PARAMETER |
SYMBOL |
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
TA = +25°C |
|
|
±0.7 |
±5 |
|
Input Offset Voltage |
|
VOS |
|
|
|
|
|
µV |
|
|
-55°C < TA < +85°C |
|
|
±10 |
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-55°C < TA < +125°C |
|
|
|
5.0 |
|
|
|
|
|
|
|
|
|
|
|
Average Temperature Coefficient |
|
∆VOS |
|
TA = +25°C |
|
|
50 |
|
µV/°C |
of Input Offset Voltage |
|
∆T |
-20°C < TA < +85°C |
|
|
0.01 |
0.05 |
||
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
TA = +25°C |
|
1.5 |
10 |
|
Input Bias Current |
|
IBIAS |
Doubles every 10° |
|
|
|
|
pA |
|
|
0°C < TA < +70°C |
|
35 |
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-20°C < TA < +85°C |
|
100 |
|
|
|
|
|
|
|
|
|
|
|
|
Input Offset Current (Note 2) |
|
IOS |
TA = +25°C |
|
|
0.5 |
|
pA |
|
|
|
|
|
|
|
|
|
|
|
Input Resistance |
|
RIN |
|
|
|
1012 |
|
Ω |
|
Large-Signal Voltage Gain |
|
AVOL |
RL = 10kΩ |
|
1 · 105 |
5 · 108 |
|
V/V |
|
Output Voltage Swing (Note 3) |
|
VOUT |
RL = 10kΩ |
|
±4.7 |
±4.85 |
|
V |
|
|
|
|
|
|
|
||||
RL = 100kΩ |
|
|
±4.95 |
|
|||||
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
Common-Mode Voltage Range |
|
CMVR |
|
|
-5.0 |
-5.2 to +2.0 |
1.6 |
V |
|
|
|
|
|
|
|
|
|
|
|
Common-Mode Rejection Ratio |
|
CMRR |
CMVR = -5V to +1.6V |
|
120 |
130 |
|
dB |
|
|
|
|
|
|
|
|
|
|
|
Power-Supply Rejection Ratio |
|
PSRR |
V+ to V- = ±3V to ±8V |
|
120 |
130 |
|
dB |
|
|
|
|
|
|
|
|
|
|
|
Input Noise Voltage |
|
enp-p |
RS = 100Ω, f = 0 to 10Hz |
|
2 |
|
µVp-p |
||
|
|
|
|
|
|
|
|
|
|
Input Noise Current |
|
In |
f = 10Hz |
|
|
0.01 |
|
pA/√Hz |
|
|
|
|
|
|
|
|
|
|
|
Unity-Gain Bandwidth |
|
GBW |
|
|
|
2.0 |
|
MHz |
|
|
|
|
|
|
|
|
|
|
|
Slew Rate |
|
SR |
CL = 50pF, RL = 10kΩ |
|
|
2.5 |
|
V/µs |
|
|
|
|
|
|
|
|
|
|
|
Rise Time |
|
tr |
|
|
|
0.2 |
|
µs |
|
|
|
|
|
|
|
|
|
|
|
Overshoot |
|
|
|
|
|
|
20 |
|
% |
|
|
|
|
|
|
|
|
|
|
Operating Supply Range |
V+ to V- |
|
|
4.5 |
|
16 |
V |
||
|
|
|
|
|
|
|
|
|
|
Supply Current |
|
ISUPP |
No load |
|
|
2.0 |
3.5 |
mA |
|
|
|
|
|
|
|
|
|
|
|
2 _______________________________________________________________________________________
Chopper-Stabilized Op Amps
ELECTRICAL CHARACTERISTICS—ICL7650B/ICL7653B (continued)
(Circuit of Figure 1, V+ = +5V, V- = -5V, TA = +25°C, unless otherwise noted.)
PARAMETER |
SYMBOL |
|
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
|
|
|
|
|
|
|
|
|
|
Internal Chopping Frequency |
fch |
|
Pins 12–14 open (DIP) |
120 |
200 |
375 |
Hz |
|
|
|
|
|
|
|
|
|
|
Clamp On Current (Note 4) |
|
|
RL = 100kΩ |
25 |
70 |
200 |
µA |
|
Clamp Off Current (Note 4) |
|
|
-4.0V < VOUT < +4.0V |
|
1 |
|
pA |
|
Offset Voltage vs. Time |
|
|
No load |
|
100 |
|
nV/ |
|
|
|
|
|
√month |
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Note 2: IOS = 2 · IBIAS |
|
|
|
|
|
|
|
|
Note 3: OUTPUT and CLAMP pins not connected. |
|
|
|
|
|
|||
Note 4: See Output Clamp section for details. |
|
|
|
|
|
|
ELECTRICAL CHARACTERISTICS—ICL7650/ICL7653
(Circuit of Figure 1, V+ = +5V, V- = -5V, TA = +25°C, unless otherwise noted.) (Note 5)
PARAMETER |
SYMBOL |
CONDITIONS |
|
MIN |
TYP |
MAX |
UNITS |
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
TA = +25°C |
|
ICL765_ |
|
±0.7 |
±5.0 |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
ICL765_B |
|
±1.0 |
±10 |
|
|
|||
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Input Offset Voltage |
|
VOS |
ICL765_ |
|
|
0°C ≤ TA ≤ +70°C |
|
±1.0 |
±10 |
µV |
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-20°C |
≤ TA ≤ +85°C |
|
±1.0 |
±10 |
|
|
|
|
|
|
|
(Note 6) |
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-55°C |
≤ TA ≤ +125°C |
|
±10 |
±50 |
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ICL765_B, 0°C ≤ TA ≤ +70°C |
|
|
0.01 |
0.05 |
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Average Temperature Coefficient |
|
∆VOS |
|
|
|
|
0°C ≤ TA ≤ +70°C |
|
0.01 |
0.1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
-20°C ≤ TA ≤ +85°C |
|
0.01 |
0.05 |
µV/°C |
|
|||||
|
|
|
|
|
|||||||||
of Input Offset Voltage (Note 6) |
|
∆T |
ICL765_ |
|
|
|
|||||||
|
|
|
|
|
|
|
|
|
|||||
|
-55°C |
≤ TA ≤ +85°C |
|
0.01 |
0.05 |
|
|
||||||
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
+85°C ≤ TA ≤ +125°C |
|
0.25 |
1.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
TA = +25°C |
|
|
ICL765_ |
|
4 |
10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ICL765_B |
|
12 |
20 |
|
|
||
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0°C ≤ TA ≤ +70°C |
|
|
|
|
|
|
Input Bias Current |
|
IB |
|
|
|
|
20 |
100 |
pA |
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ICL765_ |
|
|
-20°C ≤ TA ≤ +85°C |
|
50 |
200 |
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-55°C ≤ TA ≤ +125°C |
|
0.3 |
10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Input Resistance |
|
RIN |
|
|
|
|
|
|
1012 |
|
Ω |
||
|
|
|
|
RL = 10kΩ, TA = +25°C |
|
|
1 · 108 |
5 · 108 |
|
|
|
||
Large-Signal Voltage Gain |
|
AVOL |
0°C ≤ TA ≤ +70°C |
|
|
0.5 · 108 |
|
V/V |
|
||||
|
|
|
|
|
|||||||||
|
-20°C ≤ TA ≤ +85°C |
|
|
0.5 · 108 |
|
|
|||||||
|
|
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
-55°C ≤ TA ≤ +125°C |
|
|
0.2 · 108 |
|
|
|
|||
Output Voltage Swing (Note 3) |
|
VOUT |
RL = 10kΩ |
|
|
±4.7 |
±4.85 |
|
V |
|
|||
|
|
|
|
|
|
|
|
|
|
||||
RL = 100kΩ |
|
|
|
±4.95 |
|
||||||||
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0°C ≤ TA ≤ +70°C |
|
|
-5.0 |
-5.2 to +3.0 |
2.5 |
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Common-Mode Voltage Range |
CMVR |
-20°C ≤ TA ≤ +85°C |
|
|
-5.0 |
-5.2 to +3.0 |
2.5 |
V |
|||||
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
-55°C ≤ TA ≤ +125°C |
|
|
-4.5 |
-4.0 to +3.0 |
2.5 |
|
|
||
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ICL7650/ICL7650B/ICL7653/ICL7653B
_______________________________________________________________________________________ 3
ICL7650/ICL7650B/ICL7653/ICL7653B
Chopper-Stabilized Op Amps
ELECTRICAL CHARACTERISTICS—ICL7650/ICL7653 (continued)
(Circuit of Figure 1, V+ = +5V, V- = -5V, TA = +25°C, unless otherwise noted.) (Note 5)
PARAMETER |
SYMBOL |
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
|
|
|
|
|
|
|
Common-Mode Rejection Ratio |
CMRR |
CMVR = -5V to +2.5V |
120 |
130 |
|
dB |
|
|
|
|
|
|
|
Power-Supply Rejection Ratio |
PSRR |
V+ to V- = ±3V to ±8V |
120 |
130 |
|
dB |
|
|
|
|
|
|
|
Input Noise Voltage |
enp-p |
RS = 100Ω, f = 0 to 10Hz |
|
2 |
|
µVp-p |
|
|
|
|
|
|
|
Input Noise Current |
In |
f = 10Hz |
|
0.01 |
|
pA/√Hz |
|
|
|
|
|
|
|
Unity-Gain Bandwidth |
GBW |
|
|
2.0 |
|
MHz |
|
|
|
|
|
|
|
Slew Rate |
SR |
CL = 50pF, RL = 10kΩ |
|
2.5 |
|
V/µs |
|
|
|
|
|
|
|
Rise Time |
tr |
|
|
0.2 |
|
µs |
|
|
|
|
|
|
|
Overshoot |
|
|
|
20 |
|
% |
|
|
|
|
|
|
|
Operating Supply Range |
V+ to V- |
|
4.5 |
|
16 |
V |
|
|
|||||
|
|
|
|
|
|
|
Supply Current |
ISUPP |
No load |
|
1.2 |
2.0 |
mA |
|
|
|
|
|
|
|
Internal Chopping Frequency |
fCLKOUT |
Pins 13 and 14 open (DIP) |
120 |
200 |
375 |
Hz |
|
|
|
|
|
|
|
Clamp On Current (Note 4) |
|
RL = 100kΩ |
25 |
70 |
200 |
µA |
|
|
|
|
|
|
|
Clamp Off Current (Note 4) |
|
-4.0 ≤ VOUT ≤ +4.0V |
|
1 |
|
pA |
|
|
|
||||
|
|
|
|
|
|
|
Offset Voltage vs. Time |
|
|
|
100 |
|
nV/ |
|
|
|
|
|||
|
|
|
|
√month |
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Note 3: OUTPUT and CLAMP pins not connected. Note 4: See Output Clamp section for details.
Note 5: All pins are designed to withstand electrostatic discharge (ESD) levels in excess of 2000V (MIL STD 8838 Method 3015.1 test circuit).
Note 6: Sample tested. Limits are not used to calculate outgoing quality level.
Typical Operating Characteristics
(Circuit of Figure 1, V+ = +5V, V- = -5V, TA = +25°C, unless otherwise noted.)
MAXIMUM OUTPUT CURRENT |
CLOCK RIPPLE REFERRED TO INPUT |
SUPPLY CURRENT |
vs. SUPPLY VOLTAGE |
vs. TEMPERATURE |
vs. SUPPLY VOLTAGE |
|
4 |
|
|
|
|
|
|
ICL7650toc01 |
|
1k |
|
|
|
|
ICL7650toc02 |
|
3 |
|
|
|
|
|
ICL7650toc03 |
(mA) |
3 |
|
|
|
|
|
|
|
|
|
|
|
0.1 F |
|
|
|
|
|
|
|
|||
|
|
|
|
SOURCE CURRENT |
|
|
|
|
|
|
|
|
|
|
|
|
|||||||
|
|
|
|
|
100 |
|
|
|
|
SUPPLY CURRENT (mA) |
|
|
|
|
|
|
|||||||
MAXIMUM OUTPUT CURRENT |
2 |
|
|
|
|
CLOCK RIPPLE ( Vp-p) |
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
2 |
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
1 |
|
|
|
|
|
|
|
|
BROADBAND |
|
1 F |
|
|
|
|
|
|
|
|
||||
0 |
|
|
|
|
|
|
|
10 |
|
NOISE |
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
(AV = 1000) |
|
|
|
|
|
|
|
|
|
|
|||||
-10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
SINK CURRENT |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
-20 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
-30 |
|
|
|
|
|
|
|
|
0.1 |
|
|
|
|
|
|
0 |
|
|
|
|
|
|
|
2 |
4 |
6 |
8 |
10 |
12 |
14 |
16 |
|
25 |
50 |
75 |
100 |
125 |
150 |
|
4 |
6 |
8 |
10 |
12 |
14 |
16 |
|
|
|
TOTAL SUPPLY VOLTAGE (V) |
|
|
|
|
|
TEMPERATURE (°C) |
|
|
|
|
|
TOTAL SUPPLY VOLTAGE (V) |
|
|
||||||
4 |
_______________________________________________________________________________________ |
|
|
|
|