CS3002-ISZR Equivalent & Substitute Parts Reference

Part Overview

The CS3002-ISZR is a general purpose operational amplifier manufactured by Cirrus Logic Inc., configured as a dual-channel (2 circuit) rail-to-rail amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of functionally equivalent active alternatives for new designs and production continuity.

The CS3002-ISZR operates across a supply voltage range of 2.7 V to 6.7 V with a slew rate of 5 V/µs, making it suitable for low-power general purpose amplification applications. Due to its obsolete status, direct substitution with active product alternatives is required for ongoing component sourcing and design updates.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	CS3002-ISZR	—
Manufacturer	Cirrus Logic Inc.	—
Product Status	Obsolete	—
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	5	V/µs
Current - Input Bias	100	pA
Voltage - Input Offset	10	µV
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	6.7	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS Compliant	—
Moisture Sensitivity Level (MSL)	3 (168 Hours)	—

Substitute Part Grouping Explanation

Substitution of the CS3002-ISZR is determined by the following critical parameters that must be matched or exceeded:

Mandatory Matching Parameters:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Number of Circuits: 2
Output Type: Rail-to-Rail

Performance Parameters (Minimum Acceptable):

Slew Rate: 5 V/µs or greater
Voltage - Supply Span (Min): 2.7 V or lower
Voltage - Supply Span (Max): 6.7 V or greater
Operating Temperature Range: Must encompass -40°C to 85°C minimum

Compliance Parameters:

RoHS Status: RoHS3 Compliant preferred for new designs
REACH Status: REACH Unaffected

The substitute parts identified below meet these criteria and are classified as active products, ensuring long-term availability and design continuity.

Parameter Comparison

Parameter	CS3002-ISZR	AD8532ARZ-REEL	OPA2333AIDR	TLC4502AID	TLC4502AIDR	TLC4502ACD	TLC4502ACDR
Manufacturer	Cirrus Logic	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	CMOS, Zero-Drift	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	5	5	0.16	2.5	2.5	2.5	2.5
Current - Input Bias (pA)	100	5	70	1	1	1	1
Voltage - Input Offset (µV)	10	25	2	10	10	10	10
Voltage - Supply Span Min (V)	2.7	2.7	1.8	4	4	4	4
Voltage - Supply Span Max (V)	6.7	6	5.5	6	6	6	6
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 125	-40 to 125	-40 to 125	0 to 70	0 to 70
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: AD8532ARZ-REEL (Analog Devices Inc.)

The AD8532ARZ-REEL is the closest functional equivalent to the CS3002-ISZR. It matches the critical performance parameters including 5 V/µs slew rate, 2.7 V minimum supply voltage, and -40°C to 85°C operating temperature range. The device is classified as active with ROHS3 compliance, ensuring long-term availability. Input bias current is superior at 5 pA versus 100 pA. This part is recommended as the primary replacement for direct substitution in existing designs.

Secondary Substitute: TLC4502AID / TLC4502AIDR (Texas Instruments)

The TLC4502AID and TLC4502AIDR are functionally compatible CMOS alternatives with extended operating temperature range (-40°C to 125°C). These devices feature superior input bias current (1 pA) and matching input offset voltage (10 µV). However, slew rate is reduced to 2.5 V/µs and minimum supply voltage is 4 V, which may limit compatibility in applications requiring lower supply voltages or higher slew rates. Both variants are active products with ROHS3 compliance and high inventory availability.

Tertiary Substitute: OPA2333AIDR (Texas Instruments)

The OPA2333AIDR is a zero-drift CMOS amplifier offering superior input offset voltage (2 µV) and extended temperature range (-40°C to 125°C). This device is suitable for precision applications where offset voltage drift is critical. However, slew rate is significantly reduced to 0.16 V/µs and minimum supply voltage is 1.8 V with maximum 5.5 V, which may not meet all application requirements. This part is classified as active with ROHS3 compliance.

Temperature-Limited Substitutes: TLC4502ACD / TLC4502ACDR (Texas Instruments)

The TLC4502ACD and TLC4502ACDR are CMOS alternatives with restricted operating temperature range (0°C to 70°C). These devices are suitable only for applications operating within this narrower temperature window. Both are active products with ROHS3 compliance and adequate inventory.

All recommended substitutes maintain 8-SOIC package compatibility and surface mount mounting type, ensuring PCB layout compatibility with the original CS3002-ISZR design.

Frequently Asked Questions (FAQ)

Q1: Can the AD8532ARZ-REEL directly replace the CS3002-ISZR without circuit modifications?

The AD8532ARZ-REEL is pin-compatible and functionally equivalent for most general purpose amplification applications. Both devices feature identical 8-SOIC packaging, dual-channel configuration, rail-to-rail output, and matching supply voltage range (2.7 V to 6 V for AD8532ARZ-REEL versus 2.7 V to 6.7 V for CS3002-ISZR). The AD8532ARZ-REEL matches the 5 V/µs slew rate specification. Direct substitution is feasible for applications operating within the overlapping supply voltage range of 2.7 V to 6 V.

Q2: Why do the TLC4502 variants have a minimum supply voltage of 4 V instead of 2.7 V?

The TLC4502 series is designed with a different internal architecture optimized for CMOS operation at higher supply voltages. This design choice results in superior input bias current (1 pA versus 100 pA) and lower power consumption. Applications requiring operation below 4 V supply voltage must use the AD8532ARZ-REEL or OPA2333AIDR instead.

Q3: What is the significance of the temperature range difference between TLC4502AID (-40°C to 125°C) and TLC4502ACD (0°C to 70°C)?

The temperature range designation reflects the tested and guaranteed operating specifications for each variant. The TLC4502AID is qualified for industrial and extended temperature applications, while the TLC4502ACD is qualified for commercial temperature range only. Selection depends on the end-application environment. Designs requiring operation below 0°C or above 70°C must specify the TLC4502AID or equivalent extended-range device.

Q4: Is the OPA2333AIDR suitable as a direct replacement if slew rate is not critical?

The OPA2333AIDR can substitute the CS3002-ISZR in applications where slew rate below 0.16 V/µs is acceptable. The zero-drift architecture provides superior input offset voltage stability (2 µV initial offset with drift compensation). However, the minimum supply voltage of 1.8 V and maximum of 5.5 V creates a narrower operating window compared to the CS3002-ISZR (2.7 V to 6.7 V). Circuit validation is required to confirm compatibility with the specific supply voltage and temperature requirements.

Q5: What packaging options are available for the substitute parts?

All substitute parts are available in 8-SOIC surface mount package, matching the CS3002-ISZR footprint. Packaging variants (Cut Tape, Digi-Reel, Tube, Tape & Reel) affect handling and assembly processes but do not alter electrical performance or pin compatibility. Selection of packaging variant depends on production volume and assembly equipment compatibility.

Q6: Are all substitute parts RoHS3 compliant?

All identified substitute parts are ROHS3 compliant. The original CS3002-ISZR is RoHS compliant but predates the ROHS3 standard. For new designs and production, ROHS3-compliant substitutes (AD8532ARZ-REEL, OPA2333AIDR, and all TLC4502 variants) are recommended to meet current regulatory requirements.

Q7: Which substitute offers the best input bias current performance?

The TLC4502 series (all variants) offers the lowest input bias current at 1 pA, followed by the AD8532ARZ-REEL at 5 pA, the OPA2333AIDR at 70 pA, and the original CS3002-ISZR at 100 pA. Lower input bias current reduces errors in high-impedance signal conditioning applications. Selection should be based on the specific circuit requirements for input bias current performance.

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