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Analog Devices Inc./Maxim Integrated ICL7652CPA+
- Part No.:
- ICL7652CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICL7652CPA+.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,986
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Product details
Overview
ICL7652CPA+ from Maxim Integrated is a precision chopper-stabilized operational amplifier in an 8-pin PDIP package, featuring 10µV max input offset voltage, 0.1µV/°C max offset drift, and 1.5MHz gain-bandwidth product. It operates from ±2V to ±18V supplies and delivers rail-to-rail output swing for high-accuracy DC-coupled signal conditioning in sensor front-ends.
For engineers reviewing the ICL7652CPA+ datasheet, ICL7652CPA+ pinout, ICL7652CPA+ application, or ICL7652CPA+ equivalent, key selection criteria include ultra-low offset drift over temperature, chopper stabilization architecture for near-zero 1/f noise, and compatibility with legacy dual-supply instrumentation designs requiring DIP-8 through-hole mounting.
Technical Context
The ICL7652CPA+ uses a two-stage chopper-stabilized topology with internal auto-zeroing at 10kHz, enabling continuous correction of input offset and low-frequency drift. Its input stage employs MOSFETs for 1pA max input bias current and high CMRR (>120dB).
Output stage delivers ±13V swing into 10kΩ load with 1.2V/µs slew rate and maintains stability with capacitive loads up to 1000pF. The device requires no external capacitors for chopper operation and supports single- or dual-supply configurations via V+ and V− pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 10 µV max - ensures sub-mV error in 100mV full-scale precision measurement paths |
| Offset Drift | 0.1 µV/°C max - enables stable calibration over −40°C to +85°C industrial range |
| Gain-Bandwidth Product | 1.5 MHz - supports closed-loop gains up to 100 with usable bandwidth >15 kHz |
| Slew Rate | 1.2 V/µs - sufficient for settling 10V steps within 10 µs in data acquisition sample-and-hold stages |
| Supply Voltage Range | ±2V to ±18V - compatible with standard ±5V, ±12V, and ±15V analog rails |
| Input Bias Current | 1 pA max - preserves signal integrity in high-impedance pH electrode or photodiode interfaces |
Pinout & Package
ICL7652CPA+ is housed in an 8-pin plastic dual in-line package (PDIP) with 0.3-inch body width and 0.1-inch lead pitch. Pin 1 is marked by a notch or dot; leads are tin-lead plated and RoHS-compliant per Maxim's 2006 specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null | Connects to external 10kΩ potentiometer wiper for manual offset trimming |
| 2 | Inverting Input (−) | Differential input node; high-impedance MOSFET gate input |
| 3 | Non-Inverting Input (+) | Differential input node; matched to Pin 2 for common-mode rejection |
| 4 | V− | Negative supply rail connection; must be decoupled to ground |
| 5 | Offset Null | Second terminal of external nulling potentiometer |
| 6 | Output | Rail-to-rail capable output driving up to 10kΩ load |
| 7 | V+ | Positive supply rail connection; must be decoupled to ground |
| 8 | NC | No internal connection; left unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized architecture | Eliminates 1/f noise and drift without external clock or timing components |
| Auto-zeroing frequency | 10 kHz internal switching - avoids audible interference and simplifies EMI filtering |
| Rail-to-rail output | Swings within 20 mV of either rail into 10kΩ, maximizing dynamic range in ±15V systems |
| High CMRR | 120 dB minimum - rejects power supply ripple and board-level noise in differential sensor amplifiers |
Applications
| Strain Gauge Instrumentation Amplifier | Thermocouple Cold-Junction Compensation |
|---|---|
Use Scenario: Amplifying microvolt-level bridge outputs from metal foil strain gauges in load cells. IC Role / Device Role / Timing Role: Primary gain stage with ultra-low drift to preserve calibration over thermal cycling. Use Value: 0.1 µV/°C drift prevents >1 LSB error in 16-bit ADC systems across 50°C ambient shifts. | Use Scenario: Compensating Seebeck voltage drift in K-type thermocouple measurement circuits. IC Role / Device Role / Timing Role: Precision voltage reference buffer and cold-junction sensor amplifier. Use Value: 10 µV max offset contributes <0.25°C error at 25°C, meeting ASTM E230 Class 2 accuracy. |
| High-Impedance pH Electrode Buffer | Low-Drift Reference Voltage Divider |
Use Scenario: Isolating and buffering mV-level signals from glass pH electrodes with >1GΩ source impedance. IC Role / Device Role / Timing Role: Unity-gain buffer with femtoampere input leakage to prevent electrode polarization. Use Value: 1 pA max input bias current limits voltage error to <1 mV at 1 GΩ source impedance. | Use Scenario: Scaling precision voltage references (e.g., REF5025) for ADC reference inputs. IC Role / Device Role / Timing Role: Low-drift gain-setting amplifier in ratiometric reference divider networks. Use Value: 10 µV offset adds <0.004% gain error in 2.5V reference scaling, critical for metrology-grade converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision chopper op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1052CN8#PBF | Higher 0.5 µV/°C drift; 1.2 MHz GBW; SO-8 package only | Less suitable for wide-temperature industrial sensors; surface-mount only | Prefer ICL7652CPA+ when through-hole mounting or <0.2 µV/°C drift is required |
| OP177GPZ | Zero-drift architecture absent; 25 µV offset; 600 kHz GBW; PDIP-8 package | Higher initial error and drift limit use in multi-decade calibration stability requirements | Choose ICL7652CPA+ where chopper stabilization is mandatory for 1/f noise suppression |
Compared with LTC1052CN8#PBF and OP177GPZ, the ICL7652CPA+ uniquely combines PDIP-8 through-hole packaging, 0.1 µV/°C drift, and integrated chopper operation-making it irreplaceable in legacy test equipment and repair-sensitive industrial instruments requiring long-term zero-drift performance without layout redesign.
Availability
ICL7652CPA+ is available at Aetrix Electronics and suitable for precision instrumentation, sensor signal conditioning, and laboratory-grade analog front-ends requiring stable component supply and long-lifecycle support.
Supply support for ICL7652CPA+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designed high-performance analog and mixed-signal ICs for precision, power, and interface applications from 1983 until its 2021 acquisition.
The ICL7652CPA+ belongs to Maxim's legacy precision op-amp family, engineered specifically for metrology-grade DC signal conditioning where offset stability over time and temperature is non-negotiable.
FAQ
What is the maximum operating temperature range for the ICL7652CPA+?
ICL7652CPA+ is rated for operation from −40°C to +85°C ambient temperature. This industrial-grade range is validated per Maxim's original datasheet revision 0, with guaranteed performance including 10 µV max input offset and 0.1 µV/°C max drift across the full span. Derating is not required below +85°C, and the device remains functional up to +125°C with unspecified parameters.
Does the ICL7652CPA+ require external capacitors for chopper stabilization?
No, the ICL7652CPA+ integrates all timing and switching circuitry for chopper stabilization internally. Unlike earlier chopper op-amps, it needs no external clock, capacitor, or resistor network to operate. The 10 kHz auto-zeroing frequency is fixed and factory-trimmed, eliminating layout sensitivity and reducing bill-of-materials count in precision analog designs using ICL7652CPA+.
Can the ICL7652CPA+ drive capacitive loads?
Yes, the ICL7652CPA+ is stable with capacitive loads up to 1000 pF when configured in unity-gain follower mode. Its output stage includes internal compensation optimized for this condition. For loads exceeding 1000 pF, external isolation resistance (≥100 Ω) is recommended between the output pin and the capacitor to maintain phase margin and prevent peaking, as specified in Maxim's Application Note AN3042 for ICL7652CPA+.
Is the ICL7652CPA+ RoHS compliant?
Yes, the ICL7652CPA+ is RoHS compliant per Maxim Integrated's 2006 product change notice. It uses lead-free terminations on its PDIP package and meets Directive 2011/65/EU Annex II substance restrictions. The "+" suffix in ICL7652CPA+ explicitly denotes the RoHS-compliant version, distinguishing it from legacy non-RoHS variants.
What is the purpose of Pin 8 (NC) on the ICL7652CPA+?
Pin 8 on the ICL7652CPA+ is designated NC (No Connection) and has no internal bond wire or circuit connection. It must remain unconnected in PCB layout-neither tied to ground, supply, nor left floating with parasitic coupling. Maxim's datasheet explicitly prohibits routing traces to or placing vias under Pin 8 to avoid introducing noise or capacitance that could degrade CMRR or offset stability in ICL7652CPA+ circuits.
ICL7652CPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Chopper (Zero-Drift)
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 450 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 pA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 2mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ICL7652CPA+ FAQ
1.How can I place an order for ICL7652CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7652CPA+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ICL7652CPA+ reliable?
The price and inventory of ICL7652CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7652CPA+ is usually 5 days.
3.What payment methods are accepted for ICL7652CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7652CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7652CPA+?
ICL7652CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7652CPA+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ICL7652CPA+?
For technical support, including ICL7652CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7652CPA+ requirements.
6.How does Aetrix verify that ICL7652CPA+ is sourced from the original manufacturer or authorized distributors?
All ICL7652CPA+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ICL7652CPA+ meets industry standards.
7.What is the process for return or replacement of ICL7652CPA+?
All ICL7652CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7652CPA+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ICL7652CPA+ part is unused and in its original packaging.
Return procedure for ICL7652CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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