AD8546ARMZ-R7 Equivalent & Substitute Parts

Part Overview

The AD8546ARMZ-R7 is a CMOS dual-channel operational amplifier manufactured by Analog Devices Inc., designed for rail-to-rail signal conditioning applications. This surface-mount component operates across a wide supply voltage range of 2.7 V to 18 V and maintains active product status with full RoHS3 compliance. The device is packaged in an 8-MSOP configuration suitable for space-constrained designs. Substitute parts are identified when inventory constraints, packaging preferences, or specific performance requirements necessitate alternative component selection while maintaining functional compatibility within defined electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	AD8546ARMZ-R7	—
Manufacturer	Analog Devices Inc.	—
Category	Linear, Amplifiers	—
Amplifier Type	CMOS	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	18	V
Operating Temperature	-40 to 125	°C
Slew Rate	0.08	V/µs
Gain Bandwidth Product	200	kHz
Current - Supply	18	µA (x2 Channels)
Current - Output / Channel	12	mA
RoHS Status	ROHS3 Compliant	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitute parts for the AD8546ARMZ-R7 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Substitution Criteria:

Dual-channel configuration (Number of Circuits = 2)
Rail-to-rail output capability
Surface-mount packaging in 8-pin MSOP or equivalent footprint
Supply voltage range compatibility (minimum 2.7 V, maximum 18 V overlap required)
Operating temperature range overlap (-40°C minimum)
CMOS or general-purpose amplifier topology

Substitute parts are organized into two functional groups:

Group 1: CMOS Amplifiers with Extended Supply Range (BD7562 Series) These parts maintain CMOS architecture and support the full 2.7 V to 18 V supply range of the AD8546ARMZ-R7. The BD7562FVM-TR and BD7562SFVM-TR variants offer enhanced performance characteristics including higher slew rate (1 V/µs) and increased gain bandwidth product (1 MHz), with operating temperature ranges of -40°C to 85°C and -40°C to 105°C respectively.

Group 2: General-Purpose Amplifiers with Compatible Supply Range (TLV2372 and TLV2402 Series) These Texas Instruments components provide rail-to-rail operation within overlapping supply voltage ranges. The TLV2372IDGK and TLV2372IDGKR variants support 2.7 V to 16 V operation with superior performance metrics (2.1 V/µs slew rate, 3 MHz gain bandwidth product). The TLV2402 series (CDGK, IDGK, IDGKR, QDGKRQ1) operates across 2.5 V to 16 V with lower power consumption (900 nA supply current) but reduced bandwidth (5.5 kHz), suitable for low-power applications. The TLV2402QDGKRQ1 variant includes automotive-grade qualification (AEC-Q100).

Parameter Comparison

Parameter	AD8546ARMZ-R7	BD7562FVM-TR	BD7562SFVM-TR	TLV2372IDGK	TLV2372IDGKR	TLV2402IDGK	TLV2402IDGKR	TLV2402QDGKRQ1
Manufacturer	Analog Devices	Rohm Semiconductor	Rohm Semiconductor	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	CMOS	CMOS	CMOS	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	2	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	Rail-to-Rail
Voltage - Supply Span (Min)	2.7 V	5 V	5 V	2.7 V	2.7 V	2.5 V	2.5 V	2.5 V
Voltage - Supply Span (Max)	18 V	14.5 V	14.5 V	16 V	16 V	16 V	16 V	16 V
Operating Temperature (Min)	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C
Operating Temperature (Max)	125°C	85°C	105°C	125°C	125°C	125°C	125°C	125°C
Slew Rate	0.08 V/µs	1 V/µs	1 V/µs	2.1 V/µs	2.1 V/µs	0.0025 V/µs	0.0025 V/µs	0.0025 V/µs
Gain Bandwidth Product	200 kHz	1 MHz	1 MHz	3 MHz	3 MHz	5.5 kHz	5.5 kHz	5.5 kHz
Current - Supply	18 µA (x2)	900 µA	900 µA	750 µA (x2)	750 µA (x2)	900 nA (x2)	900 nA (x2)	900 nA (x2)
Current - Output / Channel	12 mA	14 mA	14 mA	16 mA	16 mA	200 µA	200 µA	200 µA
Package / Case	8-TSSOP, 8-MSOP	8-VSSOP, 8-MSOP	8-VSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active
Automotive Grade	—	—	—	—	—	—	—	AEC-Q100

Engineering Selection Recommendations

For Direct Functional Replacement with Extended Temperature Range: The TLV2372IDGK and TLV2372IDGKR are suitable substitutes when the application requires the full -40°C to 125°C operating temperature range of the AD8546ARMZ-R7. Both variants maintain supply voltage compatibility (2.7 V to 16 V), dual-channel configuration, and rail-to-rail output. These parts offer superior performance with 2.1 V/µs slew rate and 3 MHz gain bandwidth product. The TLV2372IDGKR variant is available in Cut Tape & Digi-Reel packaging, while TLV2372IDGK is supplied in Tube packaging.

For CMOS Architecture Preservation with Enhanced Performance: The BD7562SFVM-TR maintains CMOS amplifier topology with operating temperature range of -40°C to 105°C. This part supports supply voltages from 5 V to 14.5 V, which overlaps with the AD8546ARMZ-R7 operating range above 5 V. The BD7562SFVM-TR delivers 1 V/µs slew rate and 1 MHz gain bandwidth product, representing significant performance improvement over the original part. This variant is recommended for applications where CMOS architecture is a design requirement and supply voltages remain above 5 V.

For Low-Power Applications: The TLV2402IDGKR and TLV2402QDGKRQ1 are appropriate for designs prioritizing minimal power consumption. These parts operate with 900 nA supply current per channel, substantially lower than the AD8546ARMZ-R7 (18 µA per channel). Both maintain -40°C to 125°C temperature range and 2.5 V to 16 V supply compatibility. The TLV2402QDGKRQ1 includes automotive-grade qualification (AEC-Q100) for applications requiring automotive reliability standards.

For Automotive Applications: The TLV2402QDGKRQ1 is the only substitute part with automotive-grade qualification (AEC-Q100) and is supplied in Tape & Reel packaging. This variant maintains full temperature range (-40°C to 125°C) and is suitable for automotive signal conditioning circuits.

Packaging Considerations: All substitute parts are available in surface-mount 8-pin MSOP or equivalent footprints compatible with the AD8546ARMZ-R7 PCB layout. Packaging format availability varies: Cut Tape & Digi-Reel options are available for BD7562FVM-TR, BD7562SFVM-TR, TLV2372IDGKR, TLV2402IDGKR, and TLV2402QDGKRQ1; Tube packaging is available for TLV2372IDGK, TLV2402CDGK, and TLV2402IDGK.

Frequently Asked Questions (FAQ)

Q: Can the BD7562FVM-TR or BD7562SFVM-TR be used as direct replacements for the AD8546ARMZ-R7?

A: The BD7562 series maintains CMOS architecture and dual-channel rail-to-rail configuration. However, the minimum supply voltage is 5 V, compared to 2.7 V for the AD8546ARMZ-R7. These parts are suitable substitutes only in applications where the supply voltage remains at or above 5 V. The BD7562SFVM-TR supports operating temperatures to 105°C, which is lower than the AD8546ARMZ-R7 maximum of 125°C.

Q: What is the difference between TLV2372 and TLV2402 series parts?

A: The TLV2372 series (TLV2372IDGK, TLV2372IDGKR) is a general-purpose amplifier with higher performance: 2.1 V/µs slew rate, 3 MHz gain bandwidth product, and 750 µA supply current per channel. The TLV2402 series (TLV2402CDGK, TLV2402IDGK, TLV2402IDGKR, TLV2402QDGKRQ1) is optimized for low-power applications with 900 nA supply current per channel but reduced bandwidth (5.5 kHz) and slower slew rate (0.0025 V/µs). Selection depends on whether the application prioritizes performance or power consumption.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed are RoHS3 compliant and maintain REACH unaffected status, matching the environmental compliance profile of the AD8546ARMZ-R7.

Q: What is the significance of the TLV2402QDGKRQ1 automotive qualification?

A: The TLV2402QDGKRQ1 carries AEC-Q100 automotive-grade qualification, indicating it meets automotive reliability and quality standards. This part is suitable for automotive applications requiring certified components. The moisture sensitivity level (MSL) is 2 (1 Year) for this variant, compared to MSL 1 (Unlimited) for other parts.

Q: Can I use TLV2402 parts in applications requiring the full 200 kHz gain bandwidth product of the AD8546ARMZ-R7?

A: No. The TLV2402 series has a gain bandwidth product of only 5.5 kHz, significantly lower than the AD8546ARMZ-R7 (200 kHz). These parts are suitable only for applications with low-frequency signal requirements. For applications requiring bandwidth comparable to the AD8546ARMZ-R7, use the TLV2372 series (3 MHz) or BD7562 series (1 MHz).

Q: What are the packaging format differences among substitute parts?

A: Substitute parts are available in three packaging formats: Tape & Reel (TR), Cut Tape & Digi-Reel (CT), and Tube. The AD8546ARMZ-R7 is supplied in Tape & Reel format. Equivalent Tape & Reel options include BD7562SFVM-TR, TLV2402QDGKRQ1. Cut Tape & Digi-Reel options include BD7562FVM-TR, BD7562SFVM-TR, TLV2372IDGKR, TLV2402IDGKR, TLV2402QDGKRQ1. Tube packaging is available for TLV2372IDGK, TLV2402CDGK, TLV2402IDGK.

Q: Is the 8-VSSOP package footprint compatible with the 8-MSOP footprint of the AD8546ARMZ-R7?

A: The BD7562 series is specified as 8-VSSOP with 2.80mm width, while the AD8546ARMZ-R7 is 8-MSOP with 3.00mm width. Although both are 8-pin surface-mount packages, the physical dimensions differ. PCB layout verification is required before substitution. The TLV2372 and TLV2402 series are specified as 8-TSSOP or 8-MSOP with 3.00mm width, matching the AD8546ARMZ-R7 footprint.

Q: What is the maximum output current capability of each substitute part?

A: Output current per channel varies: AD8546ARMZ-R7 (12 mA), BD7562 series (14 mA), TLV2372 series (16 mA), TLV2402 series (200 µA). Applications requiring output currents above 200 µA should not use TLV2402 variants. For maximum output current capability, the TLV2372 series provides 16 mA per channel.

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