TLC2272QDRG4 Equivalent & Substitute Parts

Part Overview

The TLC2272QDRG4 is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device features rail-to-rail output capability and is qualified to AEC-Q100 automotive standards with an operating temperature range of -40°C to 125°C. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain compatibility with existing circuit designs while meeting the same electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	3.6	V/µs
Gain Bandwidth Product	2.25	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	300	µV
Current - Supply (x2 Channels)	2.4	mA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	4.4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-40 to 125	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q100	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC2272QDRG4 is determined by the following critical parameters: dual-channel CMOS amplifier architecture, 8-SOIC surface mount package, rail-to-rail output configuration, and compatible supply voltage range. The substitute parts identified fall into two functional categories based on electrical performance characteristics:

Category 1: LMC6082 Series (LMC6082AIM/NOPB, LMC6082AIMX/NOPB, LMC6082IM/NOPB, LMC6082IMX/NOPB) These devices maintain the same package footprint and dual-channel CMOS architecture with push-pull, rail-to-rail output. They operate within overlapping supply voltage ranges (4.5V to 15.5V) and share identical mounting type and package dimensions. Differences exist in slew rate (1.5V/µs versus 3.6V/µs), gain bandwidth product (1.3MHz versus 2.25MHz), and maximum operating temperature (85°C versus 125°C).

Category 2: LMC662 Series (LMC662AIM/NOPB, LMC662AIMX/NOPB) These devices provide dual-channel CMOS amplification in the same 8-SOIC package with push-pull, rail-to-rail output. Supply voltage range is 4.75V to 15.5V. Performance metrics differ in slew rate (1.1V/µs), gain bandwidth product (1.4MHz), and maximum operating temperature (85°C).

All substitute parts share identical package geometry, surface mount configuration, and ROHS3 compliance status. Selection among substitutes depends on application requirements for slew rate, bandwidth, operating temperature range, and supply current specifications.

Parameter Comparison

Parameter	TLC2272QDRG4	LMC6082AIM/NOPB	LMC6082AIMX/NOPB	LMC6082IM/NOPB	LMC6082IMX/NOPB	LMC662AIM/NOPB	LMC662AIMX/NOPB
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail
Slew Rate (V/µs)	3.6	1.5	1.5	1.5	1.5	1.1	1.1
Gain Bandwidth Product (MHz)	2.25	1.3	1.3	1.3	1.3	1.4	1.4
Current - Input Bias (pA)	1	0.01	0.01	0.01	0.01	0.002	0.002
Voltage - Input Offset (µV)	300	150	150	150	150	1000	1000
Current - Supply x2 Channels (mA)	2.4	1.1	1.1	1.1	1.1	0.75	0.75
Current - Output / Channel (mA)	50	34	34	34	34	40	40
Voltage - Supply Span Min (V)	4.4	4.5	4.5	4.5	4.5	4.75	4.75
Voltage - Supply Span Max (V)	16	15.5	15.5	15.5	15.5	15.5	15.5
Operating Temperature (°C)	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Mounting Type	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	Not specified	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not specified	1 (Unlimited)

Engineering Selection Recommendations

For applications requiring maximum operating temperature of 125°C: No substitute parts maintain the full -40°C to 125°C temperature range of the TLC2272QDRG4. All identified alternatives operate to 85°C maximum. Applications requiring automotive-grade operation at elevated temperatures must evaluate alternative device families or implement thermal management strategies to maintain substitute parts within specified operating limits.

For applications with automotive AEC-Q100 qualification requirements: The TLC2272QDRG4 carries explicit AEC-Q100 qualification. Substitute parts do not carry documented AEC-Q100 qualification in the provided specifications. Automotive applications requiring formal qualification must verify qualification status through manufacturer datasheets or technical support before implementation.

For applications prioritizing slew rate performance: The TLC2272QDRG4 provides 3.6V/µs slew rate. LMC6082 series devices deliver 1.5V/µs, and LMC662 series devices deliver 1.1V/µs. Applications with high-speed signal requirements may experience performance degradation with substitute parts.

For applications prioritizing bandwidth: The TLC2272QDRG4 provides 2.25MHz gain bandwidth product. LMC6082 series devices deliver 1.3MHz, and LMC662 series devices deliver 1.4MHz. Applications requiring maximum bandwidth should account for reduced performance with substitute parts.

For applications prioritizing supply current efficiency: LMC662 series devices consume 750µA total supply current (x2 channels), compared to 2.4mA for the TLC2272QDRG4. LMC6082 series devices consume 1.1mA. Battery-powered or power-constrained applications benefit from LMC662 series substitution.

For applications with standard commercial temperature requirements: LMC6082AIMX/NOPB and LMC662AIMX/NOPB are listed as Active product status with Cut Tape and Digi-Reel packaging, providing long-term availability. These variants are preferred for new designs requiring sustained supply.

Frequently Asked Questions (FAQ)

Q: Can the LMC6082 series directly replace the TLC2272QDRG4 in existing designs?

A: Mechanical compatibility is confirmed through identical 8-SOIC package geometry and surface mount configuration. Electrical compatibility depends on application-specific requirements. The LMC6082 series operates at reduced slew rate (1.5V/µs versus 3.6V/µs), reduced bandwidth (1.3MHz versus 2.25MHz), and reduced maximum operating temperature (85°C versus 125°C). Applications sensitive to these parameters require circuit re-evaluation before substitution.

Q: What is the difference between LMC6082AIM/NOPB and LMC6082AIMX/NOPB?

A: Both devices share identical electrical specifications. The primary difference is packaging format: LMC6082AIM/NOPB is supplied in Tube packaging with Obsolete product status, while LMC6082AIMX/NOPB is supplied in Cut Tape and Digi-Reel format with Active product status. For new designs and sustained supply, LMC6082AIMX/NOPB is the preferred variant.

Q: Are the LMC662 series devices suitable for automotive applications?

A: The LMC662 series devices are not documented as carrying AEC-Q100 qualification in the provided specifications. The original TLC2272QDRG4 carries explicit AEC-Q100 automotive qualification. Automotive applications must verify qualification status through manufacturer documentation before implementing LMC662 series substitution.

Q: What is the impact of reduced slew rate on circuit performance?

A: Slew rate determines the maximum rate of output voltage change. The TLC2272QDRG4 provides 3.6V/µs, while LMC6082 series provides 1.5V/µs and LMC662 series provides 1.1V/µs. Applications with fast transient signals or high-frequency switching may experience signal distortion or reduced fidelity with substitute parts. Verify slew rate requirements against application specifications before substitution.

Q: Can the TLC2272QDRG4 be replaced in circuits operating above 85°C?

A: No substitute parts identified maintain operation above 85°C. The TLC2272QDRG4 operates to 125°C. Applications requiring operation above 85°C must retain the original part number or identify alternative device families with extended temperature ratings.

Q: What is the significance of the ROHS3 compliance status?

A: ROHS3 compliance indicates the device meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All identified LMC6082 series devices and LMC662AIMX/NOPB are ROHS3 compliant, matching the original part's environmental compliance status. This ensures compatibility with environmental regulations and procurement requirements.

Q: How does input bias current affect circuit design?

A: Input bias current represents leakage current into the amplifier inputs. The TLC2272QDRG4 specifies 1 pA, while LMC6082 series specifies 0.01 pA and LMC662 series specifies 0.002 pA. Lower input bias current reduces errors in high-impedance circuits and precision applications. Substitute parts provide superior input bias current performance.

Q: What packaging options are available for substitute parts?

A: LMC6082AIM/NOPB and LMC6082IM/NOPB are supplied in Tube packaging. LMC6082AIMX/NOPB and LMC6082IMX/NOPB are supplied in Cut Tape and Digi-Reel format. LMC662AIM/NOPB is supplied in Bulk packaging. LMC662AIMX/NOPB is supplied in Cut Tape and Digi-Reel format. Selection depends on manufacturing process requirements and volume specifications.

Q: Is the supply voltage range compatible across all substitute parts?

A: The TLC2272QDRG4 operates from 4.4V to 16V. LMC6082 series operates from 4.5V to 15.5V, and LMC662 series operates from 4.75V to 15.5V. All substitute parts accommodate standard dual-supply configurations (±5V, ±7.5V, ±8V) and single-supply configurations (5V, 10V, 15V). Verify specific supply voltages used in existing designs fall within substitute part specifications.

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