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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments ICL7652P

Name: ICL7652P
Brand: Texas Instruments
SKU: ICL7652P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ICL7652P

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: ICL7652P.pdf

Description:: IC OPAMP ZERO-DRIFT 1 CIRC 8DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ICL7652P from Texas Instruments is a precision chopper-stabilized operational amplifier in an 8-pin plastic DIP package, delivering 5 µV max input offset voltage, 0.003 µV/°C typical offset drift, 120 dB min open-loop gain, 110 dB min CMRR, and rail-to-rail common-mode input range including the negative rail. It enables ultra-low-drift signal conditioning in strain gauge and thermocouple front-ends.

For engineers reviewing the ICL7652P datasheet, ICL7652P pinout, ICL7652P application, or ICL7652P equivalent, key selection considerations include its chopper-stabilized architecture for sub-microvolt DC accuracy, dual external capacitor (CXA/CXB) configuration, single- or split-supply operation down to ±1.9 V, and robust ESD protection rated to 2000 V per MIL-STD-883C Method 3015.

Technical Context

The ICL7652P implements a dual-amplifier chopper-stabilization topology with on-chip nulling and amplifying phases controlled by internal logic, using two external capacitors (CXA and CXB) to store nulling potentials. Its Advanced LinCMOS™ process enables CMOS input stage impedance >10¹² Ω and low-leakage switching.

It features make-before-break analog switches, fast overload recovery, and feed-forward design preserving high-frequency response of the main amplifier. Input common-mode range extends to V_DD−, supporting true single-supply operation without performance degradation at low supply voltages.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Offset Voltage	5 µV max - Enables direct amplification of µV-level transducer signals without trimming.
Offset Drift vs Temp	0.003 µV/°C typ - Maintains calibration stability across 0°C to 70°C industrial temperature range.
CMRR / PSRR	110 dB min - Rejects noise coupling from shared power rails or ground shifts in sensor interfaces.
Common-Mode Range	Includes V_DD− - Allows single-supply operation with ground-referenced sensors and eliminates level-shifting circuitry.
Supply Voltage Range	±1.9 V to ±8 V - Supports low-voltage battery-powered systems and legacy ±5 V designs.
Input Bias Current	30 pA max - Prevents significant voltage drop across high-impedance sensor sources (e.g., pH electrodes).
Chopping Frequency	450 Hz - Places switching artifacts outside audio band and avoids interference with slow-sensing applications.

Pinout & Package

ICL7652P uses an 8-pin Plastic Dual In-line Package (PDIP), with 0.3-inch body width and standard through-hole mounting. Pin spacing is 0.1 inch, compatible with industry-standard PCB footprints and socketing.

Pin/Terminal	Circuit Role	Design Meaning
1 (CXA)	Nulling Capacitor A Terminal	Connects to external capacitor (0.1–1 µF) that stores nulling potential during amplifying phase.
2 (IN−)	Inverting Input	Differential input node; accepts signals referenced to V_DD− or ground in single-supply configurations.
3 (IN+)	Non-Inverting Input	Differential input node; supports rail-to-rail common-mode range including V_DD−.
4 (V_DD−)	Negative Supply Rail	Return path for supply current and reference for C RETURN; also valid connection point for CXA/CXB.
5 (CXB)	Nulling Capacitor B Terminal	Connects to second external capacitor (0.1–1 µF) that maintains nulling during next nulling phase.
6 (OUT)	Amplifier Output	Capable of ±50 mA output drive; designed to withstand −100 mA surge without latchup.
7 (V_DD+)	Positive Supply Rail	Accepts up to +8 V; supplies both main and nulling amplifiers and internal logic.
8 (C RETURN)	Capacitor Reference Node	Alternative return for CXA/CXB; electrically tied to V_DD− internally but provides layout isolation benefit.

Key Features

Feature	Design Value
Chopper-Stabilized Architecture	Continuous real-time offset nulling eliminates drift due to temperature, time, and supply variation - no manual calibration required.
Noise Immunity with External Caps	Operates with 0.1–1 µF CXA/CXB without degrading input noise or offset - unlike competitive choppers that degrade with capacitance.
Rail-to-Rail Common-Mode Input	Accepts inputs down to V_DD−, enabling direct interface with grounded sensors in single-supply systems.
ESD Protection	2000 V HBM rating per MIL-STD-883C Method 3015 - reduces field failure risk during handling and assembly.
Overload Recovery	Faster recovery than competing chopper op-amps - minimizes settling delay after input overdrive events.

Applications

Strain Gauge Amplifier	Thermocouple Signal Conditioning
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells or pressure sensors in industrial weighing systems. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with sub-µV offset stability over temperature and time. Use Value: Eliminates need for periodic zero calibration; maintains measurement accuracy across 0°C–70°C ambient range.	Use Scenario: Cold-junction compensation and linearization of Type K or J thermocouple outputs in furnace controllers. IC Role / Device Role / Timing Role: Low-drift, high-impedance buffer and first-stage amplifier before cold-junction sensing and ADC digitization. Use Value: Preserves thermocouple's native µV/°C sensitivity without introducing offset error or drift-induced nonlinearity.
High-Impedance pH Electrode Interface	Low-Voltage Battery-Powered Sensor Node
Use Scenario: Direct buffering of glass pH electrode outputs (10⁹–10¹² Ω source impedance) in portable water quality meters. IC Role / Device Role / Timing Role: Ultra-low-input-bias-current voltage follower preventing electrode polarization and signal loss. Use Value: Enables stable, drift-free pH readings with <30 pA bias current - critical for high-resistance electrochemical sources.	Use Scenario: Front-end amplification in coin-cell-powered environmental sensors (temperature/humidity) with strict power budgets. IC Role / Device Role / Timing Role: Single-supply signal conditioner operating from +3.3 V (V_DD+) and ground (V_DD−), consuming only 1.5 mA. Use Value: Delivers precision DC gain without requiring charge pumps or dual supplies - extending battery life while maintaining accuracy.

Strain Gauge Amplifier

Thermocouple Signal Conditioning

Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells or pressure sensors in industrial weighing systems.

IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with sub-µV offset stability over temperature and time.

Use Value: Eliminates need for periodic zero calibration; maintains measurement accuracy across 0°C–70°C ambient range.

Use Scenario: Cold-junction compensation and linearization of Type K or J thermocouple outputs in furnace controllers.

IC Role / Device Role / Timing Role: Low-drift, high-impedance buffer and first-stage amplifier before cold-junction sensing and ADC digitization.

Use Value: Preserves thermocouple's native µV/°C sensitivity without introducing offset error or drift-induced nonlinearity.

High-Impedance pH Electrode Interface

Low-Voltage Battery-Powered Sensor Node

Use Scenario: Direct buffering of glass pH electrode outputs (10⁹–10¹² Ω source impedance) in portable water quality meters.

IC Role / Device Role / Timing Role: Ultra-low-input-bias-current voltage follower preventing electrode polarization and signal loss.

Use Value: Enables stable, drift-free pH readings with <30 pA bias current - critical for high-resistance electrochemical sources.

Use Scenario: Front-end amplification in coin-cell-powered environmental sensors (temperature/humidity) with strict power budgets.

IC Role / Device Role / Timing Role: Single-supply signal conditioner operating from +3.3 V (V_DD+) and ground (V_DD−), consuming only 1.5 mA.

Use Value: Delivers precision DC gain without requiring charge pumps or dual supplies - extending battery life while maintaining accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision chopper-stabilized op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LTC2050CS8#TRPBF	Auto-zero architecture (not chopper); 0.5 µV max offset; 0.015 µV/°C drift; requires no external capacitors.	Lower noise floor below 10 Hz; better suited for ultra-low-frequency biosignal acquisition.	Choose LTC2050 when external capacitor placement is impractical and sub-0.5 µV offset is mandatory.
OPA2189IDR	Zero-drift (auto-zero + chopper hybrid); 0.005 µV/°C max drift; 1.2 MHz GBW; integrated EMI filtering.	Higher bandwidth and superior RF immunity; optimized for automotive and medical-grade designs.	Choose OPA2189 for new designs needing >1 MHz bandwidth, AEC-Q200 compliance, or enhanced EMI rejection.

Compared with LTC2050CS8#TRPBF and OPA2189IDR, the ICL7652P offers proven long-term stability via discrete chopper control and full rail-to-rail common-mode input - making it preferred for legacy industrial instrumentation where external capacitor layout is controllable and ultra-low drift over decades is prioritized.

Availability

ICL7652P is available at Aetrix Electronics and suitable for industrial instrumentation, sensor signal conditioning, and precision analog front-ends requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for ICL7652P 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with over 50 years of innovation in precision analog ICs.

The ICL7652P belongs to TI's legacy precision op-amp product line, engineered specifically for ultra-low-drift DC signal amplification in industrial, test & measurement, and scientific instrumentation applications.

FAQ

What is the recommended capacitor type and value for CXA and CXB on the ICL7652P?

TI specifies 0.1 µF to 1 µF for both CXA and CXB. High-quality film capacitors-such as polypropylene or polystyrene-are recommended for fast-settling applications to minimize dielectric absorption effects. Ceramic capacitors may be used where settling time is less critical. The ICL7652P uniquely avoids noise degradation with these values, unlike many chopper op-amps.

Does the ICL7652P support true single-supply operation?

Yes, the ICL7652P supports true single-supply operation because its common-mode input voltage range includes the negative rail (V_DD−). When powered from +5 V and ground, IN+ and IN− accept signals from 0 V up to ~3.5 V, enabling direct interfacing with ground-referenced sensors without level-shifting circuitry.

What is the maximum allowable supply voltage for the ICL7652P?

The absolute maximum supply voltage for the ICL7652P is ±8 V (i.e., V_DD+ = +8 V, V_DD− = −8 V). Operating beyond this risks permanent damage. For reliable long-term operation, TI recommends staying within ±5 V under typical conditions, with derating at elevated temperatures per the Dissipation Rating Table.

How does the ICL7652P handle electrostatic discharge (ESD)?

The ICL7652P incorporates internal ESD protection circuits qualified to 2000 V HBM per MIL-STD-883C Method 3015. While functional failures are prevented at this level, parametric degradation may occur with repeated ESD exposure. TI advises standard ESD handling protocols-including grounded workstations and ionized air-to preserve long-term offset and drift specifications.

Can the ICL7652P be used with modern surface-mount PCB layouts?

Although the ICL7652P is offered only in through-hole PDIP (P) packaging, it can be mounted on modern SMT PCBs using PDIP-to-SOIC adapter carriers or custom footprint adapters. For new designs, consider pin-compatible SMT alternatives like the OPA2189IDR-but note that the ICL7652P remains optimal where legacy through-hole reliability and long-term drift stability are primary requirements.

ICL7652P Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: LinCMOS™

Package/Case:: 8-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Active

Amplifier Type:: Zero-Drift

Number of Circuits:: 1

Output Type:: -

Slew Rate:: 3.1V/µs

Gain Bandwidth Product:: 1.9 MHz

-3db Bandwidth:: -

Current - Input Bias:: 4 pA

Voltage - Input Offset:: 600 µV

Current - Supply:: 1.5mA

Current - Output / Channel:: -

Voltage - Supply Span (Min):: 3.8 V

Voltage - Supply Span (Max):: 16 V

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 8-PDIP

ICL7652P FAQ

1.How can I place an order for ICL7652P through Aetrix?

Please submit a Request for Quotation (RFQ) for ICL7652P 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 ICL7652P reliable?

The price and inventory of ICL7652P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7652P is usually 5 days.

3.What payment methods are accepted for ICL7652P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7652P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ICL7652P?

ICL7652P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ICL7652P 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 ICL7652P?

For technical support, including ICL7652P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7652P requirements.

6.How does Aetrix verify that ICL7652P is sourced from the original manufacturer or authorized distributors?

All ICL7652P 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 ICL7652P meets industry standards.

7.What is the process for return or replacement of ICL7652P?

All ICL7652P units undergo pre-shipment inspection (PSI). If there is an issue with ICL7652P, 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 ICL7652P part is unused and in its original packaging.

Return procedure for ICL7652P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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