TLC27L2IDRG4 Equivalent & Substitute Parts

Part Overview

The TLC27L2IDRG4 is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device belongs to the LinCMOS™ series and is classified as obsolete. The TLC27L2IDRG4 is designed for low-power, low-speed analog signal processing applications requiring minimal input bias current and low supply current consumption.

Due to its obsolete product status, direct replacement with active production equivalents or functionally compatible substitutes is necessary for new designs and ongoing production requirements. The substitute parts listed maintain electrical compatibility within specified parameter tolerances while offering improved availability and active manufacturer support.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	0.03	V/µs
Gain Bandwidth Product	110	kHz
Current - Input Bias	0.6	pA
Voltage - Input Offset	1.1	mV
Current - Supply (x2 Channels)	20	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature Range	-40 to 85	°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 compatibility for the TLC27L2IDRG4 is determined by the following critical parameters:

Primary Compatibility Criteria:

Amplifier Type: CMOS
Number of Circuits: 2
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Supply Voltage Range: Minimum 4V to Maximum 16V overlap required

Secondary Compatibility Criteria:

Slew Rate: 0.03 V/µs to 5.5 V/µs (higher slew rates acceptable for most applications)
Gain Bandwidth Product: 110 kHz to 3.5 MHz (higher bandwidth acceptable)
Input Bias Current: 0.6 pA to 1 pA (low-level compatibility)
Input Offset Voltage: 250 µV to 1.1 mV (precision-dependent applications)
Supply Current: 10 µA to 20 µA per channel (low-power operation)
Output Current: 30 mA to 45 mA per channel

Substitute parts are grouped into two categories:

Direct Texas Instruments Equivalents (TLC27L2IDR, LM432MA/NOPB): Maintain identical or near-identical electrical specifications with active product status.
STMicroelectronics Cross-Substitutes (TS272 and TS27L2 series): Provide enhanced performance characteristics (higher slew rate, higher bandwidth, lower supply current) while maintaining CMOS dual-channel 8-SOIC package compatibility and overlapping supply voltage ranges.

Parameter Comparison

Parameter	TLC27L2IDRG4	TLC27L2IDR	TS272ACDT	TS272BIDT	TS27L2ACDT	TS27L2BIDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2
Slew Rate (V/µs)	0.03	0.03	5.5	5.5	0.04	0.04
Gain Bandwidth Product (kHz)	110	110	3500	3500	100	100
Current - Input Bias (pA)	0.6	0.6	1	1	1	1
Voltage - Input Offset (mV)	1.1	1.1	0.9	0.25	0.9	0.25
Current - Supply per Channel (µA)	20	20	1000	1000	10	10
Current - Output / Channel (mA)	30	30	45	45	45	45
Voltage - Supply Span Min (V)	4	4	3	3	3	3
Voltage - Supply Span Max (V)	16	16	16	16	16	16
Operating Temperature (°C)	-40 to 85	-40 to 85	0 to 70	-40 to 125	0 to 70	-40 to 125
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: TLC27L2IDR

The TLC27L2IDR is the manufacturer-recommended direct equivalent from Texas Instruments. This part maintains identical electrical specifications to the TLC27L2IDRG4 while offering active product status with 20,300 units in stock. Selection of TLC27L2IDR eliminates any performance variation and ensures continuity with existing design validation. This part is suitable for applications where the original performance envelope must be preserved without modification.

Secondary Recommendation: TS27L2BIDT (STMicroelectronics)

The TS27L2BIDT provides enhanced performance characteristics while maintaining the low-power CMOS architecture. Key advantages include:

Improved input offset voltage specification (250 µV vs. 1.1 mV)
Extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C)
Reduced supply current per channel (10 µA vs. 20 µA)
Higher output current capability (45 mA vs. 30 mA)
Active product status with 10,353 units in stock

This part is suitable for applications requiring extended temperature operation or lower power consumption, with design validation required for the enhanced performance parameters.

Alternative Recommendation: TS272BIDT (STMicroelectronics)

The TS272BIDT offers significantly enhanced bandwidth and slew rate performance (3.5 MHz gain bandwidth product, 5.5 V/µs slew rate) compared to the original specification. This part is suitable only for applications where higher-speed signal processing is required and design re-validation is performed. Extended operating temperature range (-40°C to 125°C) and active product status support long-term availability.

Compliance Verification:

All recommended substitute parts maintain:

ROHS3 compliance
Moisture Sensitivity Level 1 (Unlimited)
REACH unaffected status
8-SOIC surface mount package compatibility
Dual-channel CMOS amplifier architecture

Frequently Asked Questions (FAQ)

Q1: Can TLC27L2IDR be used as a direct drop-in replacement for TLC27L2IDRG4?

A: Yes. The TLC27L2IDR is the manufacturer-recommended equivalent with identical electrical specifications. Both parts share the same base product number (TLC27L2), CMOS amplifier type, dual-channel configuration, 8-SOIC package, and electrical performance parameters. The primary difference is product status: TLC27L2IDRG4 is obsolete while TLC27L2IDR is active production.

Q2: What is the difference between TS27L2BIDT and TS272BIDT?

A: Both are STMicroelectronics CMOS dual-channel amplifiers in 8-SOIC packages with active product status and extended temperature range (-40°C to 125°C). The primary difference is bandwidth and slew rate: TS27L2BIDT maintains low-speed operation (100 kHz bandwidth, 0.04 V/µs slew rate) similar to the original TLC27L2IDRG4, while TS272BIDT provides high-speed operation (3.5 MHz bandwidth, 5.5 V/µs slew rate). Selection depends on application speed requirements.

Q3: Are there temperature range limitations when substituting with TS272ACDT?

A: Yes. The TS272ACDT operates over 0°C to 70°C, which is narrower than the original TLC27L2IDRG4 specification of -40°C to 85°C. This part is not suitable for applications requiring full -40°C to 85°C operation. Use TS272BIDT or TS272IDT instead, which support -40°C to 125°C operation.

Q4: Does the TS27L2ACDT support the full -40°C to 85°C temperature range?

A: No. The TS27L2ACDT operates over 0°C to 70°C. For applications requiring -40°C to 85°C operation, use TS27L2AIDT or TS27L2BIDT, which support -40°C to 125°C operation.

Q5: What is the impact of higher supply current in TS272 series compared to TS27L2 series?

A: The TS272 series consumes 1 mA per channel compared to 10 µA per channel in the TS27L2 series. This 100-fold increase in supply current is a trade-off for significantly higher bandwidth (3.5 MHz vs. 100 kHz) and slew rate (5.5 V/µs vs. 0.04 V/µs). Selection depends on power budget constraints and application speed requirements.

Q6: Can LM432MA/NOPB be used as a substitute for TLC27L2IDRG4?

A: The LM432MA/NOPB is a general-purpose amplifier with different electrical characteristics. While it shares the 8-SOIC package and dual-channel configuration, it has significantly different specifications: 1 MHz bandwidth (vs. 110 kHz), 3 nA input bias current (vs. 0.6 pA), and 150 µA supply current per channel (vs. 20 µA). This part is not recommended as a direct substitute and requires full design re-validation.

Q7: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts (TLC27L2IDR, TS272 series, TS27L2 series) are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH unaffected status, matching the compliance profile of the original TLC27L2IDRG4.

Q8: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and Tube. The 8-SOIC surface mount package remains consistent across all substitutes. Verify packaging availability with your supplier based on production volume requirements.

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