TLC27M2ACDRG4 Equivalent & Substitute Parts

Part Overview

The TLC27M2ACDRG4 is a CMOS dual-channel operational amplifier manufactured by Texas Instruments in the LinCMOS™ series. This device is packaged in an 8-SOIC surface-mount configuration and is designed for general-purpose analog signal processing applications requiring low input bias current and moderate bandwidth performance. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional compatibility within system designs.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	0.62	V/µs
Gain Bandwidth Product	635	kHz
Current - Input Bias	0.7	pA
Voltage - Input Offset	900	µV
Current - Supply (x2 Channels)	285	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC27M2ACDRG4 is determined by compatibility across the following critical parameters:

Mandatory Compatibility Criteria:

Dual-channel CMOS amplifier architecture (Number of Circuits = 2)
8-SOIC surface-mount package (0.154", 3.90mm Width)
Supply voltage range encompassing 4 V to 16 V minimum and maximum
Operating temperature range of 0°C to 70°C or extended range
Input bias current in the picoampere range
Output current capability of 30 mA or greater per channel

Performance Parameters Affecting Substitution:

Slew rate (0.62 V/µs baseline; higher values acceptable for faster applications)
Gain bandwidth product (635 kHz baseline; higher values acceptable for wider bandwidth requirements)
Input offset voltage (900 µV baseline; lower values acceptable for precision applications)
Supply current consumption (285 µA baseline; lower values acceptable for power-constrained designs)

Substitute parts are grouped into two categories: Direct Equivalents (identical electrical performance) and Enhanced Alternatives (superior performance characteristics within compatible package and pin configurations).

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (kHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Status
TLC27M2ACDRG4	Texas Instruments	CMOS	0.62	635	0.7	900	285	30	0 to 70	Discontinued
TLC27M2ACDR	Texas Instruments	CMOS	0.62	635	0.7	900	285	30	0 to 70	Active
TS272ACDT	STMicroelectronics	CMOS	5.5	3500	1	900	1000	45	0 to 70	Active
TS272AIDT	STMicroelectronics	CMOS	5.5	3500	1	900	1000	45	-40 to 125	Active
TS272BIDT	STMicroelectronics	CMOS	5.5	3500	1	250	1000	45	-40 to 125	Active
TS272CDT	STMicroelectronics	CMOS	5.5	3500	1	1100	1000	45	0 to 70	Active
TS272IDT	STMicroelectronics	CMOS	5.5	3500	1	1100	1000	45	-40 to 125	Active
TS27L2ACDT	STMicroelectronics	CMOS	0.04	100	1	900	10	45	0 to 70	Active
TS27L2AIDT	STMicroelectronics	CMOS	0.04	100	1	1100	10	45	-40 to 125	Active
TS27L2BIDT	STMicroelectronics	CMOS	0.04	100	1	250	10	45	-40 to 125	Active
LM432MA/NOPB	Texas Instruments	General Purpose	—	1000	3	600	150	30	-40 to 85	Obsolete

Engineering Selection Recommendations

Primary Substitute: TLC27M2ACDR

The TLC27M2ACDR is the direct equivalent to the TLC27M2ACDRG4. This part maintains identical electrical specifications across all measured parameters: slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current capability. The device is manufactured by Texas Instruments under the same LinCMOS™ series designation. The primary distinction is packaging format: TLC27M2ACDR is supplied in Tape & Reel (TR) configuration with active product status and significantly higher inventory availability (10,084 units). This part is suitable for direct replacement in all applications where the original TLC27M2ACDRG4 was specified.

Secondary Substitutes: TS272 Series (STMicroelectronics)

The TS272 family from STMicroelectronics provides enhanced performance characteristics while maintaining 8-SOIC package compatibility and dual-channel CMOS architecture. These devices exhibit superior slew rate (5.5 V/µs versus 0.62 V/µs) and gain bandwidth product (3.5 MHz versus 635 kHz), enabling use in higher-frequency signal processing applications. The TS272 series accommodates the full 4 V to 16 V supply range and maintains picoampere-level input bias current. Output current capability is increased to 45 mA per channel. Selection within the TS272 family depends on operating temperature requirements and input offset voltage precision:

TS272ACDT / TS272CDT: Commercial temperature range (0°C to 70°C)
TS272AIDT / TS272BIDT / TS272IDT: Industrial temperature range (-40°C to 125°C)
TS272BIDT / TS272IDT: Reduced input offset voltage (250 µV to 1.1 mV)

Tertiary Substitutes: TS27L2 Series (STMicroelectronics)

The TS27L2 family is suitable for applications requiring ultra-low power consumption (10 µA supply current versus 285 µA) and reduced slew rate (0.04 V/µs). These devices are appropriate for battery-powered or energy-constrained systems where bandwidth requirements are modest (100 kHz gain bandwidth product). The TS27L2 series maintains 8-SOIC package compatibility and dual-channel CMOS architecture with picoampere input bias current. Selection within this family follows the same temperature and offset voltage criteria as the TS272 series.

Not Recommended: LM432MA/NOPB

The LM432MA/NOPB is classified as obsolete and exhibits different amplifier architecture (general-purpose rather than CMOS). Although this device shares the 8-SOIC package and dual-channel configuration, it operates with higher input bias current (3 nanoamperes versus 0.7 picoamperes) and reduced supply current efficiency. This part is not suitable for new designs or direct replacement applications.

Frequently Asked Questions (FAQ)

Q: Can the TLC27M2ACDR be used as a direct replacement for the TLC27M2ACDRG4?

A: Yes. The TLC27M2ACDR is electrically identical to the TLC27M2ACDRG4 across all specified parameters. The difference is packaging format (Tape & Reel versus Tape & Reel with specific suffix designation) and product status (Active versus Discontinued). Both devices are manufactured by Texas Instruments and are pin-compatible in 8-SOIC configuration.

Q: What is the primary advantage of using TS272 series devices over the TLC27M2ACDR?

A: The TS272 series provides significantly higher slew rate (5.5 V/µs versus 0.62 V/µs) and gain bandwidth product (3.5 MHz versus 635 kHz). These enhanced performance characteristics enable the TS272 family to process higher-frequency signals and achieve faster transient response. Applications requiring bandwidth greater than 635 kHz benefit from TS272 substitution.

Q: Are the TS272 and TS27L2 series compatible with the original TLC27M2ACDRG4 pinout?

A: Yes. All substitute parts listed maintain the 8-SOIC package configuration with identical pin assignments. Physical and electrical pin compatibility is preserved across all recommended substitutes.

Q: When should the TS27L2 series be selected instead of the TS272 series?

A: The TS27L2 series is selected for applications where power consumption is the primary design constraint. With supply current of 10 µA (versus 1 mA for TS272), the TS27L2 family is appropriate for battery-powered systems, remote sensors, and energy-harvesting applications. The trade-off is reduced bandwidth (100 kHz versus 3.5 MHz) and slower slew rate (0.04 V/µs versus 5.5 V/µs).

Q: What is the significance of the temperature range variants (ACDT, AIDT, BIDT, CDT, IDT)?

A: Temperature range designation indicates the operating environment specification. Commercial-grade parts (ACDT, CDT) operate from 0°C to 70°C and are suitable for controlled indoor environments. Industrial-grade parts (AIDT, BIDT, IDT) operate from -40°C to 125°C and are required for automotive, outdoor, and extreme-environment applications. Select the temperature grade matching your application's thermal requirements.

Q: Does input offset voltage variation affect substitution compatibility?

A: Input offset voltage variation affects precision and accuracy in applications requiring low-drift signal conditioning. The TLC27M2ACDRG4 specifies 900 µV offset voltage. Substitute parts with lower offset voltage (250 µV for TS272BIDT, TS27L2BIDT) provide improved precision. Substitutes with higher offset voltage (1.1 mV for TS272CDT, TS272IDT, TS27L2AIDT) are acceptable for applications with relaxed precision requirements. Verify offset voltage specification against your circuit design tolerance.

Q: Is the LM432MA/NOPB suitable as a substitute?

A: No. The LM432MA/NOPB is obsolete and exhibits fundamentally different electrical characteristics, including higher input bias current (3 nanoamperes versus 0.7 picoamperes) and lower supply current efficiency. This device is not recommended for new designs or direct replacement applications.

Q: What compliance certifications apply to all recommended substitutes?

A: All recommended substitute parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is 1 (Unlimited) for all devices, indicating no special moisture handling requirements during storage or assembly.

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