TLV2782CDG4 Equivalent & Substitute Parts

Part Overview

The TLV2782CDG4 is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-SOIC surface-mount package with rail-to-rail output capability. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement continuity. The TLV2782CDG4 operates across a 1.8 V to 3.6 V supply range and is suitable for low-power analog signal processing applications requiring compact packaging and minimal component count.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TLV2782CDG4	—
Manufacturer	Texas Instruments	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	5	V/µs
Gain Bandwidth Product	8	MHz
Current - Input Bias	2.5	pA
Voltage - Input Offset	250	µV
Current - Supply (x2 Channels)	650	µA
Current - Output / Channel	23	mA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	3.6	V
Operating Temperature	0 to 70	°C
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLV2782CDG4 is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Package type: 8-SOIC surface-mount form factor
Circuit count: Dual (2) operational amplifier configuration
Output architecture: Rail-to-rail output capability
Supply voltage range compatibility: Minimum 1.8 V operation required
Mounting type: Surface mount

Secondary Compatibility Parameters:

Slew rate: 5 V/µs or greater
Gain bandwidth product: 8 MHz or greater
Input bias current: 2.5 pA or lower
Input offset voltage: 250 µV or lower
Output current per channel: 23 mA or greater
Supply current: 650 µA (x2 channels) or lower

Substitute parts are grouped into two categories based on amplifier topology and performance characteristics:

Category A: General-Purpose Amplifiers (Direct Topology Match)

TLV2782CD (Texas Instruments) — Active product status, identical electrical specifications, tube packaging
LMV822IDT and LMV822IYDT (STMicroelectronics) — Active status, automotive-grade qualification, modified electrical parameters within acceptable range
MAX4326ESA+ and MAX4326ESA+T (Analog Devices Inc./Maxim Integrated) — Active status, extended supply range, modified electrical parameters

Category B: CMOS Amplifiers (Enhanced Performance)

AD8602ARZ, AD8602ARZ-REEL, AD8602ARZ-REEL7, and AD8602WARZ-R7 (Analog Devices Inc.) — Active status, CMOS topology, superior input bias current and offset voltage specifications, extended operating temperature range, higher output current capability

Category C: Microchip General-Purpose Amplifiers

MCP6282-E/SN (Microchip Technology) — Active status, general-purpose topology, extended operating temperature range

All substitute parts maintain 8-SOIC packaging, dual-circuit configuration, and rail-to-rail output architecture. Electrical parameter variations are documented in the Parameter Comparison table below.

Parameter Comparison

Parameter	TLV2782CDG4	TLV2782CD	AD8602ARZ	AD8602ARZ-REEL	AD8602ARZ-REEL7	AD8602WARZ-R7	LMV822IDT	LMV822IYDT	MAX4326ESA+	MAX4326ESA+T	MCP6282-E/SN
Manufacturer	TI	TI	ADI	ADI	ADI	ADI	STM	STM	ADI/Maxim	ADI/Maxim	Microchip
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	CMOS	CMOS	CMOS	CMOS	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Slew Rate (V/µs)	5	5	6	6	6	6	1.9	1.9	2	2	2.5
Gain Bandwidth Product (MHz)	8	8	8.4	8.4	8.4	8.4	5.5	5.5	5	5	5
Current - Input Bias (pA)	2.5	2.5	0.2	0.2	0.2	0.2	60 nA	60 nA	50 nA	50 nA	1 pA
Voltage - Input Offset (µV)	250	250	80	80	80	80	3500	3500	700	700	3000
Current - Supply (µA, x2 Ch)	650	650	750	750	750	750	300	300	725	725	450
Current - Output / Channel (mA)	23	23	50	50	50	50	70	70	50	50	25
Voltage - Supply Span Min (V)	1.8	1.8	2.7	2.7	2.7	2.7	2.5	2.5	2.4	2.4	2.2
Voltage - Supply Span Max (V)	3.6	3.6	5.5	5.5	5.5	5.5	5.5	5.5	6.5	6.5	5.5
Operating Temperature (°C)	0 to 70	0 to 70	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 125
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Tier 1: Direct Replacement (Recommended for Obsolescence Mitigation)

The TLV2782CD represents the primary equivalent substitute. This part maintains identical electrical specifications to the TLV2782CDG4 while offering active product status from Texas Instruments. The TLV2782CD is available in tube packaging and is suitable for direct schematic and layout substitution without design modification. This option is recommended for applications where the original 1.8 V to 3.6 V supply range and 0°C to 70°C operating temperature are design requirements.

Tier 2: Enhanced Performance Substitutes (CMOS Technology)

The AD8602ARZ family (AD8602ARZ, AD8602ARZ-REEL, AD8602ARZ-REEL7, AD8602WARZ-R7) offers superior electrical performance through CMOS topology. These parts provide significantly lower input bias current (0.2 pA versus 2.5 pA) and input offset voltage (80 µV versus 250 µV), higher output current capability (50 mA versus 23 mA), and extended operating temperature range (-40°C to 125°C). The AD8602 family requires verification that the minimum supply voltage of 2.7 V is compatible with the application circuit. These parts are suitable for designs requiring enhanced precision and wider temperature operation.

Tier 3: Automotive-Grade Alternatives

The LMV822IDT and LMV822IYDT (STMicroelectronics) provide automotive-grade qualification (AEC-Q100) with active product status. These parts feature lower supply current (300 µA versus 650 µA) and higher output current capability (70 mA versus 23 mA). The minimum supply voltage is 2.5 V, requiring circuit verification. These options are appropriate for automotive and industrial applications requiring AEC-Q100 compliance.

Tier 4: Extended Supply Range Options

The MAX4326ESA+ and MAX4326ESA+T (Analog Devices Inc./Maxim Integrated) support an extended supply range of 2.4 V to 6.5 V, accommodating broader system voltage requirements. Operating temperature range is -40°C to 85°C. These parts are suitable for applications requiring higher supply voltage operation.

Tier 5: Microchip Alternative

The MCP6282-E/SN (Microchip Technology) provides general-purpose amplifier functionality with extended operating temperature range (-40°C to 125°C) and lower minimum supply voltage (2.2 V). Supply current is 450 µA, and output current is 25 mA. This option is suitable for low-power applications with extended temperature requirements.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and 8-SOIC surface-mount packaging. Selection should be based on specific application requirements regarding supply voltage range, operating temperature, and performance specifications.

Frequently Asked Questions (FAQ)

Q1: Can the TLV2782CD be used as a direct replacement for the TLV2782CDG4?

A: Yes. The TLV2782CD is electrically and mechanically identical to the TLV2782CDG4. Both parts feature identical slew rate (5 V/µs), gain bandwidth product (8 MHz), input bias current (2.5 pA), input offset voltage (250 µV), supply current (650 µA per dual channels), output current (23 mA per channel), and supply voltage range (1.8 V to 3.6 V). The primary difference is product status: TLV2782CD is active, while TLV2782CDG4 is obsolete. The TLV2782CD is available in tube packaging and is suitable for direct schematic and PCB layout substitution.

Q2: What is the minimum supply voltage requirement for AD8602 substitutes?

A: The AD8602ARZ family (including AD8602ARZ, AD8602ARZ-REEL, AD8602ARZ-REEL7, and AD8602WARZ-R7) requires a minimum supply voltage of 2.7 V. The original TLV2782CDG4 operates at 1.8 V minimum. If the application circuit operates at supply voltages below 2.7 V, the AD8602 family is not suitable. Verify circuit supply voltage before selecting this substitute.

Q3: Are all substitute parts available in 8-SOIC packaging?

A: Yes. All substitute parts listed in this reference are available in 8-SOIC (0.154", 3.90mm width) surface-mount packaging. This packaging is mechanically and electrically compatible with the original TLV2782CDG4 footprint. No PCB layout modification is required for package compatibility.

Q4: Which substitute offers the lowest power consumption?

A: The LMV822IDT and LMV822IYDT (STMicroelectronics) offer the lowest supply current at 300 µA (x2 channels), compared to 650 µA for the TLV2782CDG4. These parts are suitable for battery-powered and low-power applications. However, the minimum supply voltage is 2.5 V, which must be verified against application requirements.

Q5: Which substitute supports the widest operating temperature range?

A: The AD8602ARZ family, LMV822IDT, LMV822IYDT, and MCP6282-E/SN all support an extended operating temperature range of -40°C to 125°C, compared to 0°C to 70°C for the TLV2782CDG4. The MAX4326ESA+ family supports -40°C to 85°C. Selection depends on specific application temperature requirements.

Q6: What is the difference between AD8602ARZ packaging options?

A: The AD8602ARZ family is available in multiple packaging configurations: AD8602ARZ (tube), AD8602ARZ-REEL (tape & reel), AD8602ARZ-REEL7 (cut tape & Digi-Reel), and AD8602WARZ-R7 (cut tape & Digi-Reel). All variants are electrically identical. Packaging selection depends on procurement and assembly requirements. Tape & reel and cut tape options are suitable for automated assembly; tube packaging is suitable for manual assembly or lower-volume applications.

Q7: Can LMV822 parts be used in non-automotive applications?

A: Yes. The LMV822IDT and LMV822IYDT are automotive-grade qualified (AEC-Q100) but are suitable for use in non-automotive applications. Automotive qualification indicates enhanced reliability and quality assurance; it does not restrict use to automotive applications. These parts are appropriate for industrial, medical, and consumer applications requiring high reliability.

Q8: What is the key difference between general-purpose and CMOS amplifier topologies in this comparison?

A: CMOS amplifiers (AD8602 family) feature significantly lower input bias current (0.2 pA) and input offset voltage (80 µV) compared to general-purpose amplifiers (TLV2782CDG4: 2.5 pA and 250 µV). CMOS topology is suitable for high-impedance input applications and precision signal conditioning. General-purpose amplifiers offer broader supply voltage compatibility and are suitable for standard analog signal processing applications.

Q9: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference are RoHS3 compliant and carry MSL Level 1 (unlimited moisture sensitivity) rating. All parts are suitable for lead-free assembly processes and meet environmental compliance requirements.

Q10: Which substitute offers the highest output current capability?

A: The LMV822IDT and LMV822IYDT offer the highest output current per channel at 70 mA, compared to 23 mA for the TLV2782CDG4. The AD8602 family provides 50 mA per channel. Selection depends on load current requirements in the application circuit.

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