TLC272IDRG4 Equivalent & Substitute Parts

Part Overview

The TLC272IDRG4 is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as a LinCMOS™ series amplifier with a product status of Obsolete. The TLC272IDRG4 delivers low input bias current (0.7 pA) and moderate slew rate performance (5.3 V/µs), making it suitable for precision analog signal conditioning applications requiring low power consumption.

Due to its obsolete status, component availability is limited to existing inventory. Identifying equivalent and substitute parts ensures design continuity and supply chain reliability for applications currently utilizing the TLC272IDRG4.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	5.3	V/µs
Gain Bandwidth Product	2.2	MHz
Current - Input Bias	0.7	pA
Voltage - Input Offset	900	µV
Current - Supply (x2 Channels)	1.4	mA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC272IDRG4 is determined by the following critical parameters:

Primary Substitution 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 4 V, Maximum 16 V
Operating Temperature Range: -40°C to 85°C (or extended range)

Secondary Compatibility Parameters:

Slew Rate: 5.3 V/µs or higher
Gain Bandwidth Product: 2.2 MHz or higher
Current - Input Bias: 0.7 pA or lower
Voltage - Input Offset: 900 µV or lower
Current - Supply: 1.4 mA (x2 Channels) or lower
Current - Output / Channel: 30 mA or higher

The substitute parts listed below meet the primary criteria and maintain compatibility within the secondary parameter ranges. Parts with extended temperature ranges (-40°C to 125°C) provide enhanced operational flexibility for demanding applications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Temp Range (°C)	Package
TLC272IDRG4	Texas Instruments	Obsolete	CMOS	5.3	2.2	0.7	900	1.4	30	-40 to 85	8-SOIC
TLC272IDR	Texas Instruments	Active	CMOS	5.3	2.2	0.7	900	1.4	30	-40 to 85	8-SOIC
TS272ACDT	STMicroelectronics	Active	CMOS	5.5	3.5	1	900	1	45	0 to 70	8-SOIC
TS272AIDT	STMicroelectronics	Active	CMOS	5.5	3.5	1	900	1	45	-40 to 125	8-SOIC
TS272BIDT	STMicroelectronics	Active	CMOS	5.5	3.5	1	250	1	45	-40 to 125	8-SOIC
TS272CDT	STMicroelectronics	Active	CMOS	5.5	3.5	1	1100	1	45	0 to 70	8-SOIC
TS272IDT	STMicroelectronics	Active	CMOS	5.5	3.5	1	1100	1	45	-40 to 125	8-SOIC
TS27L2ACDT	STMicroelectronics	Active	CMOS	0.04	0.1	1	900	0.01	45	0 to 70	8-SOIC
TS27L2AIDT	STMicroelectronics	Active	CMOS	0.04	0.1	1	1100	0.01	45	-40 to 125	8-SOIC
TS27L2BIDT	STMicroelectronics	Active	CMOS	0.04	0.1	1	250	0.01	45	-40 to 125	8-SOIC
LM432MA/NOPB	Texas Instruments	Obsolete	General Purpose	—	1	3	600	0.15	30	-40 to 85	8-SOIC

Engineering Selection Recommendations

Primary Recommendation: TLC272IDR

The TLC272IDR is the direct active equivalent of the TLC272IDRG4. Manufactured by Texas Instruments under the same LinCMOS™ series, this part maintains identical electrical specifications across all critical parameters: slew rate (5.3 V/µs), gain bandwidth product (2.2 MHz), input bias current (0.7 pA), and supply current (1.4 mA). The TLC272IDR carries Active product status with significantly higher inventory availability (39,900 units), ensuring reliable supply chain access. Both parts are ROHS3 Compliant and carry identical compliance certifications (REACH Unaffected, EAR99, HTSUS 8542.33.0001).

Secondary Recommendations: STMicroelectronics TS272 Series

The TS272AIDT and TS272BIDT variants from STMicroelectronics provide enhanced performance characteristics while maintaining 8-SOIC package compatibility. These parts feature higher slew rate (5.5 V/µs) and gain bandwidth product (3.5 MHz), with extended temperature range support (-40°C to 125°C). The TS272BIDT offers superior input offset voltage specification (250 µV versus 900 µV), beneficial for precision applications. All TS272 variants operate within the TLC272IDRG4 supply voltage range (3 V to 16 V minimum, exceeding the 4 V minimum requirement) and deliver higher output current capability (45 mA versus 30 mA).

Low-Power Alternative: TS27L2 Series

The TS27L2AIDT and TS27L2BIDT variants are suitable for applications prioritizing ultra-low power consumption. These parts reduce supply current to 10 µA (x2 Channels) compared to 1.4 mA in the TLC272IDRG4. However, the TS27L2 series exhibits significantly reduced slew rate (0.04 V/µs) and gain bandwidth product (100 kHz), restricting use to low-frequency signal conditioning applications. Selection of TS27L2 variants requires verification that application bandwidth requirements do not exceed 100 kHz.

Not Recommended: LM432MA/NOPB

The LM432MA/NOPB is classified as a General Purpose amplifier with obsolete product status. Although it shares the 8-SOIC package and -40°C to 85°C temperature range, it exhibits significantly lower gain bandwidth product (1 MHz), higher input bias current (3 nA), and substantially reduced supply current capability (150 µA x2 Channels). This part is unsuitable as a direct substitute for the TLC272IDRG4 in applications requiring the specified CMOS performance characteristics.

Frequently Asked Questions (FAQ)

Q1: Can the TLC272IDR directly replace the TLC272IDRG4 without circuit modification?

A: Yes. The TLC272IDR is the active production equivalent of the TLC272IDRG4. Both parts share identical electrical specifications, package configuration (8-SOIC), and operating parameters. No circuit modifications are required. The primary difference is product status: TLC272IDRG4 is Obsolete while TLC272IDR is Active, with substantially higher inventory availability.

Q2: What are the key differences between TLC272IDR and TS272AIDT?

A: Both parts are CMOS dual-channel amplifiers in 8-SOIC packages with compatible supply voltage ranges. The TS272AIDT offers enhanced performance: slew rate of 5.5 V/µs (versus 5.3 V/µs), gain bandwidth product of 3.5 MHz (versus 2.2 MHz), and extended temperature range (-40°C to 125°C versus -40°C to 85°C). The TS272AIDT also provides higher output current (45 mA versus 30 mA). Supply current is lower in TS272AIDT (1 mA versus 1.4 mA). These differences make TS272AIDT suitable for higher-speed applications and extended temperature environments.

Q3: When should the TS27L2 series be selected instead of TS272?

A: The TS27L2 series is selected exclusively for ultra-low-power applications where supply current minimization is the primary design constraint. The TS27L2 reduces supply current to 10 µA (x2 Channels) compared to 1 mA in TS272 variants. However, this reduction comes with severe bandwidth limitations: gain bandwidth product of 100 kHz versus 3.5 MHz. Applications must operate below 100 kHz to use TS27L2 variants. High-frequency signal conditioning, audio amplification, and precision measurement applications requiring bandwidth above 100 kHz must use TS272 or TLC272 series.

Q4: Are all substitute parts ROHS3 Compliant?

A: Yes. All substitute parts listed (TLC272IDR, TS272 series, TS27L2 series, and LM432MA/NOPB) carry ROHS3 Compliant certification. All parts are REACH Unaffected and classified under ECCN EAR99 with HTSUS code 8542.33.0001. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no moisture sensitivity constraints during storage and handling.

Q5: What is the impact of input offset voltage differences between substitute parts?

A: Input offset voltage determines DC accuracy in precision applications. The TLC272IDRG4 specifies 900 µV input offset. Substitute parts vary: TS272ACDT and TS272AIDT maintain 900 µV; TS272BIDT and TS27L2BIDT reduce this to 250 µV; TS272CDT and TS272IDT increase to 1.1 mV. For applications requiring input offset voltage trimming or where DC accuracy is non-critical, these variations are acceptable. For precision instrumentation requiring tight DC accuracy without trimming, TS272BIDT or TS27L2BIDT are preferred.

Q6: Can TS272 parts with 0°C to 70°C temperature range replace TLC272IDRG4 in -40°C applications?

A: No. The TS272ACDT and TS272CDT variants specify 0°C to 70°C operating temperature range, which does not include the -40°C minimum required by TLC272IDRG4. For applications requiring -40°C operation, use only TS272AIDT, TS272BIDT, TS272IDT, or TS27L2 variants with -40°C to 125°C temperature range. Alternatively, use TLC272IDR, which maintains the original -40°C to 85°C specification.

Q7: What packaging options are available for substitute parts?

A: All substitute parts are housed in 8-SOIC (0.154", 3.90mm Width) surface mount packages, maintaining mechanical compatibility with TLC272IDRG4 PCB layouts. Packaging formats differ: TLC272IDR is supplied in Cut Tape (CT) & Digi-Reel®; TS272ACDT and TS272CDT in Cut Tape (CT) & Digi-Reel®; TS272AIDT, TS272BIDT, TS272IDT in Tape & Reel (TR); TS27L2 variants in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® depending on specific part number. Verify packaging format compatibility with assembly equipment before procurement.

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