TLC2272MDG4 Equivalent & Substitute Parts

Part Overview

The TLC2272MDG4 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 designed for general-purpose analog signal processing applications requiring low input bias current and moderate bandwidth performance.

The TLC2272MDG4 carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for systems currently utilizing this component.

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 (per Channel)	2.4	mA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	4.4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-55 to 125	°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 TLC2272MDG4 is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Package type: 8-SOIC surface mount form factor
Amplifier configuration: Dual-channel (2 circuits)
Output architecture: Rail-to-rail capability
Supply voltage range: Minimum 4.4 V to maximum 16 V overlap
Operating temperature range: Support for -55°C to 125°C or equivalent industrial range
CMOS technology platform for input bias current performance

Substitute parts are grouped into two categories:

Category 1 – Direct TLC2272 Series Variants (Highest Compatibility) Parts TLC2272MDR, LMC6082AIM/NOPB, LMC6082AIMX/NOPB, LMC6082IM/NOPB, and LMC6082IMX/NOPB maintain identical electrical specifications and package geometry. These differ only in packaging format (Tape & Reel, Tube, or Cut Tape) and product lifecycle status.

Category 2 – Cross-Manufacturer Alternatives (Functional Equivalents) Parts LMC662AIM/NOPB, LMC662AIMX/NOPB, AD8666ARZ, AD8666ARZ-REEL, and AD8666ARZ-REEL7 provide functional equivalence with acceptable parameter variations within the 8-SOIC package. These alternatives support the same supply voltage range and dual-channel configuration but exhibit different slew rates, bandwidth, and input offset characteristics.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status	Package
TLC2272MDG4	Texas Instruments	CMOS	3.6	2.25	1	300	2.4	50	4.4	16	-55 to 125	Obsolete	8-SOIC
TLC2272MDR	Texas Instruments	CMOS	3.6	2.25	1	300	2.4	50	4.4	16	-55 to 125	Active	8-SOIC
LMC6082AIM/NOPB	Texas Instruments	CMOS	1.5	1.3	0.01	150	1.1	34	4.5	15.5	-40 to 85	Obsolete	8-SOIC
LMC6082AIMX/NOPB	Texas Instruments	CMOS	1.5	1.3	0.01	150	1.1	34	4.5	15.5	-40 to 85	Active	8-SOIC
LMC6082IM/NOPB	Texas Instruments	CMOS	1.5	1.3	0.01	150	1.1	34	4.5	15.5	-40 to 85	Last Time Buy	8-SOIC
LMC6082IMX/NOPB	Texas Instruments	CMOS	1.5	1.3	0.01	150	1.1	34	4.5	15.5	-40 to 85	Active	8-SOIC
LMC662AIM/NOPB	National Semiconductor	CMOS	1.1	1.4	0.002	1000	0.75	40	4.75	15.5	-40 to 85	Active	8-SOIC
LMC662AIMX/NOPB	Texas Instruments	CMOS	1.1	1.4	0.002	1000	0.75	40	4.75	15.5	-40 to 85	Active	8-SOIC
AD8666ARZ	Analog Devices Inc.	General Purpose	3.5	4	0.2	700	1.15	140	5	16	-40 to 125	Active	8-SOIC
AD8666ARZ-REEL	Analog Devices Inc.	General Purpose	3.5	4	0.2	700	1.15	140	5	16	-40 to 125	Active	8-SOIC
AD8666ARZ-REEL7	Analog Devices Inc.	General Purpose	3.5	4	0.2	700	1.15	140	5	16	-40 to 125	Active	8-SOIC

Engineering Selection Recommendations

Tier 1 – Recommended Primary Substitute:

TLC2272MDR is the direct successor to TLC2272MDG4. This part maintains identical electrical specifications across all measured parameters: 3.6 V/µs slew rate, 2.25 MHz gain-bandwidth product, 1 pA input bias current, and 300 µV input offset voltage. The TLC2272MDR is manufactured by Texas Instruments with Active product status, ensuring long-term availability and supply chain stability. Packaging is available in Tape & Reel format suitable for automated assembly. RoHS3 compliance and MSL 1 rating are maintained. This substitution requires no circuit redesign or performance re-qualification.

Tier 2 – Secondary Substitutes (Active Status, Parameter Trade-offs):

LMC6082AIMX/NOPB and LMC6082IMX/NOPB are Active-status alternatives from Texas Instruments in 8-SOIC packaging. These parts accept lower slew rate (1.5 V/µs versus 3.6 V/µs) and reduced bandwidth (1.3 MHz versus 2.25 MHz) but offer superior input bias current (0.01 pA versus 1 pA) and lower input offset voltage (150 µV versus 300 µV). Supply current is reduced to 1.1 mA per channel. Operating temperature range is -40°C to 85°C, which does not extend to -55°C. These substitutes are suitable for applications where lower bandwidth and reduced supply current are acceptable trade-offs.

LMC662AIMX/NOPB is an Active-status alternative from Texas Instruments with the lowest supply current (0.75 mA per channel) and exceptional input bias current (0.002 pA). Slew rate is 1.1 V/µs and bandwidth is 1.4 MHz. Input offset voltage is 1 mV. Operating temperature range is -40°C to 85°C. This part is optimal for ultra-low-power applications where bandwidth and temperature range constraints are acceptable.

AD8666ARZ, AD8666ARZ-REEL, and AD8666ARZ-REEL7 are Active-status general-purpose amplifiers from Analog Devices Inc. These parts offer higher slew rate (3.5 V/µs) and bandwidth (4 MHz) compared to TLC2272MDG4, with superior output current capability (140 mA per channel). Input bias current is 0.2 pA and input offset voltage is 700 µV. Operating temperature range extends to -40°C to 125°C. Minimum supply voltage is 5 V, which is higher than TLC2272MDG4 (4.4 V minimum). These substitutes are suitable for applications requiring higher bandwidth and output drive capability.

Tier 3 – Legacy Alternatives (Obsolete or Last Time Buy Status):

LMC6082AIM/NOPB and LMC6082IM/NOPB carry Obsolete or Last Time Buy status and should be avoided for new designs or long-term production commitments. LMC662AIM/NOPB is available from National Semiconductor with Active status but represents an older product line.

Compliance and Certification:

All recommended substitutes maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. REACH status is unaffected for all parts. ECCN classification is EAR99 for all alternatives.

Frequently Asked Questions (FAQ)

Q1: Can TLC2272MDR be used as a direct replacement for TLC2272MDG4 without circuit modification?

A: Yes. TLC2272MDR is electrically and mechanically identical to TLC2272MDG4. All electrical parameters, supply voltage range, operating temperature range, and package dimensions are equivalent. The only difference is product status (Active versus Obsolete) and packaging format options. No circuit redesign is required.

Q2: What is the key difference between TLC2272MDG4 and the LMC6082 series substitutes?

A: The LMC6082 series (LMC6082AIMX/NOPB, LMC6082IMX/NOPB) operates at lower slew rate (1.5 V/µs versus 3.6 V/µs) and reduced bandwidth (1.3 MHz versus 2.25 MHz). However, input bias current is significantly lower (0.01 pA versus 1 pA) and supply current per channel is reduced (1.1 mA versus 2.4 mA). Operating temperature range is limited to -40°C to 85°C. These substitutes are suitable only for applications where bandwidth is not critical and lower power consumption is beneficial.

Q3: Why does AD8666ARZ show higher supply voltage minimum (5 V) compared to TLC2272MDG4 (4.4 V)?

A: The AD8666ARZ is specified with a minimum supply voltage of 5 V, whereas TLC2272MDG4 operates down to 4.4 V. In applications requiring operation below 5 V, the AD8666ARZ cannot be used. Verify your circuit's minimum supply voltage before selecting this alternative.

Q4: What is the significance of packaging format differences (Tube, Tape & Reel, Cut Tape)?

A: Packaging format affects handling, storage, and assembly process compatibility. Tube packaging is suitable for manual assembly or low-volume production. Tape & Reel (TR) and Cut Tape (CT) with Digi-Reel® formats are optimized for automated pick-and-place assembly. Select packaging format based on your manufacturing process requirements. Electrical performance is identical across all packaging formats for the same part number base.

Q5: Can LMC662AIMX/NOPB replace TLC2272MDG4 in a high-frequency signal processing circuit?

A: No. LMC662AIMX/NOPB has a gain-bandwidth product of 1.4 MHz compared to TLC2272MDG4's 2.25 MHz. For applications requiring bandwidth above 1.4 MHz, this substitute is not suitable. Use TLC2272MDR or AD8666ARZ series for higher bandwidth requirements.

Q6: What is the operating temperature range limitation for LMC6082 series parts?

A: LMC6082 series parts (LMC6082AIMX/NOPB, LMC6082IMX/NOPB, LMC6082AIM/NOPB, LMC6082IM/NOPB) are specified for -40°C to 85°C operating temperature. TLC2272MDG4 operates from -55°C to 125°C. If your application requires operation below -40°C or above 85°C, LMC6082 series substitutes are not compatible. Use TLC2272MDR or AD8666ARZ series instead.

Q7: Which substitute offers the lowest power consumption?

A: LMC662AIMX/NOPB offers the lowest supply current at 0.75 mA per channel (1.5 mA total for dual channels). This is significantly lower than TLC2272MDG4 (2.4 mA per channel, 4.8 mA total). For ultra-low-power applications, LMC662AIMX/NOPB is the optimal choice, provided bandwidth and temperature range requirements are compatible.

Q8: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry RoHS3 compliance certification. Moisture sensitivity level is MSL 1 (Unlimited) for all parts, indicating no special moisture control requirements during storage or handling.

Q9: What is the difference between AD8666ARZ, AD8666ARZ-REEL, and AD8666ARZ-REEL7?

A: These three part numbers are electrically identical. The differences are in packaging format: AD8666ARZ is supplied in Tube format, while AD8666ARZ-REEL and AD8666ARZ-REEL7 are supplied in Cut Tape with Digi-Reel® format. Select based on your assembly process requirements. Electrical performance and specifications are identical.

Q10: Can I use AD8666ARZ in a 4.4 V supply circuit?

A: No. AD8666ARZ is specified with a minimum supply voltage of 5 V. TLC2272MDG4 operates down to 4.4 V. If your circuit operates at 4.4 V, use TLC2272MDR instead. AD8666ARZ requires minimum 5 V supply.

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