MAX437EPA Equivalent & Substitute Parts

Part Overview

The MAX437EPA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-DIP through-hole package. This device is classified as obsolete, indicating discontinued production and limited availability for new designs. The MAX437EPA features a 60 MHz gain-bandwidth product with a 17 V/µs slew rate, designed for general-purpose amplification applications requiring moderate bandwidth and speed characteristics. Due to its obsolete status, identifying equivalent substitute parts is necessary for ongoing system support, design updates, and component procurement.

Key Parameters

Parameter	MAX437EPA	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Slew Rate	17	V/µs
Gain Bandwidth Product	60	MHz
Current - Input Bias	10	nA
Voltage - Input Offset	5	µV
Operating Temperature Range	-40°C ~ 85°C	—
Mounting Type	Through Hole	—
Package / Case	8-DIP (0.300", 7.62mm)	—
Product Status	Obsolete	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitute parts for the MAX437EPA are selected based on strict compatibility criteria within the general-purpose operational amplifier category. All substitute candidates maintain the following mandatory parameters:

Fixed Compatibility Parameters:

Amplifier Type: General Purpose
Number of Circuits: 1
Mounting Type: Through Hole
Package / Case: 8-DIP (0.300", 7.62mm)
Supplier Device Package: 8-PDIP

Performance Parameters Determining Substitution: Substitute parts are grouped by their electrical performance relative to the MAX437EPA baseline specifications. The key differentiating parameters are slew rate (17 V/µs), gain-bandwidth product (60 MHz), input bias current (10 nA), and input offset voltage (5 µV). Substitutes may exceed these specifications while maintaining functional compatibility. Operating temperature range and RoHS compliance status are secondary selection criteria based on application requirements and regulatory constraints.

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW Product (MHz)	Input Bias Current (nA)	Input Offset Voltage (µV)	Operating Temp (°C)	Product Status	RoHS Status
MAX437EPA	Analog Devices Inc./Maxim	17	60	10	5	-40 ~ 85	Obsolete	Non-compliant
AD847JNZ	Analog Devices Inc.	300	50	3300	500	0 ~ 70	Active	ROHS3 Compliant
AD848JNZ	Analog Devices Inc.	300	175	3300	200	0 ~ 70	Active	ROHS3 Compliant
OP07CPZ	Analog Devices Inc.	0.3	—	1.8	60	-40 ~ 85	Active	ROHS3 Compliant
OP07EPZ	Analog Devices Inc.	0.3	—	1.2	30	0 ~ 70	Active	ROHS3 Compliant
OP27EPZ	Analog Devices Inc.	2.8	8	10	10	0 ~ 70	Active	ROHS3 Compliant
OP27GPZ	Analog Devices Inc.	2.8	8	15	30	-40 ~ 85	Active	ROHS3 Compliant
OPA228P	Burr Brown	11	33	2.5	5	-40 ~ 85	Active	—

Engineering Selection Recommendations

Primary Selection Criteria:

All substitute parts listed maintain the mandatory 8-DIP through-hole package configuration and general-purpose amplifier classification, ensuring direct pin-compatible replacement capability. Selection among substitutes depends on application-specific performance requirements and compliance mandates.

For Extended Temperature Range Applications (-40°C to 85°C): OP27GPZ and OPA228P maintain the full operating temperature range of the MAX437EPA. OP27GPZ offers ROHS3 compliance with moderate slew rate (2.8 V/µs) and 8 MHz bandwidth. OPA228P provides higher performance with 11 V/µs slew rate and 33 MHz bandwidth, though RoHS status is not specified in available data.

For RoHS3 Compliance with Standard Temperature Range (0°C to 70°C): OP27EPZ, AD847JNZ, and AD848JNZ are all ROHS3 compliant and active products. OP27EPZ maintains conservative performance specifications (2.8 V/µs slew rate, 8 MHz bandwidth) with excellent input characteristics (1.2 nA bias current, 10 µV offset voltage). AD847JNZ and AD848JNZ provide significantly higher slew rates (300 V/µs) and wider bandwidth options (50 MHz and 175 MHz respectively), suitable for high-speed applications.

For Precision Input Characteristics: OP07CPZ and OP07EPZ offer the lowest input bias currents (1.8 nA and 1.2 nA respectively) and minimal input offset voltages (60 µV and 30 µV), making them suitable for precision measurement and low-noise applications. OP07CPZ extends to -40°C to 85°C operating range.

Product Status Consideration: All substitute parts carry active product status, ensuring ongoing availability and manufacturer support, in contrast to the obsolete MAX437EPA.

Frequently Asked Questions (FAQ)

Q: Can AD847JNZ or AD848JNZ directly replace MAX437EPA in existing designs?

A: Both parts maintain the 8-DIP through-hole package and pin configuration, enabling direct socket replacement. However, AD847JNZ and AD848JNZ operate over 0°C to 70°C temperature range, compared to MAX437EPA's -40°C to 85°C range. Additionally, their significantly higher slew rates (300 V/µs versus 17 V/µs) and input bias currents (3.3 µA versus 10 nA) may affect circuit behavior in sensitive applications. Circuit validation is necessary for applications requiring the full temperature range or exploiting low input bias current characteristics.

Q: What is the difference between OP27EPZ and OP27GPZ?

A: Both parts share identical electrical performance (2.8 V/µs slew rate, 8 MHz bandwidth, 8-DIP package). The primary difference is operating temperature range: OP27GPZ covers -40°C to 85°C (matching MAX437EPA), while OP27EPZ operates 0°C to 70°C. Input bias current differs slightly (15 nA for OP27GPZ versus 10 nA for OP27EPZ). Selection depends on required temperature range and input bias current specifications.

Q: Why do OP07CPZ and OP07EPZ have such low slew rates compared to MAX437EPA?

A: OP07 series devices are precision operational amplifiers optimized for low input offset voltage and minimal input bias current rather than high-speed performance. The 0.3 V/µs slew rate reflects design prioritization for precision measurement applications. These parts are suitable only for applications where MAX437EPA's 17 V/µs slew rate is not required.

Q: Is OPA228P a suitable replacement for MAX437EPA?

A: OPA228P maintains the -40°C to 85°C operating temperature range and 8-DIP package. Its 11 V/µs slew rate and 33 MHz bandwidth are lower than MAX437EPA specifications but may be acceptable depending on application requirements. Input offset voltage matches at 5 µV. RoHS compliance status is not specified in available documentation. Electrical performance validation is recommended before implementation.

Q: What packaging considerations apply to all substitute parts?

A: All substitute parts listed use the 8-DIP (0.300", 7.62mm) through-hole package with 8-PDIP supplier device package designation. This ensures mechanical and electrical compatibility with existing PCB layouts designed for MAX437EPA. No package adapter or redesign is required for direct substitution.

Q: Which substitute offers the best balance of performance and compliance?

A: Selection depends on specific application requirements. OP27GPZ provides ROHS3 compliance, -40°C to 85°C temperature range, and moderate performance (2.8 V/µs slew rate, 8 MHz bandwidth) with active product status. AD848JNZ offers superior bandwidth (175 MHz) and slew rate (300 V/µs) with ROHS3 compliance but limited to 0°C to 70°C operation. OPA228P matches the full temperature range with higher performance than OP27GPZ but lacks specified RoHS status.

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