THS4082CDR Equivalent & Substitute Parts Reference

Part Overview

The THS4082CDR is a voltage feedback amplifier integrated circuit manufactured by Texas Instruments, configured as a dual-channel operational amplifier in an 8-SOIC surface mount package. This device is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1). The THS4082CDR is utilized in applications requiring high-speed voltage feedback amplification with moderate bandwidth and slew rate characteristics. Substitute parts are identified to provide design flexibility when the primary part is unavailable, subject to strict electrical and mechanical parameter compatibility.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Voltage Feedback	—
Number of Circuits	2	Channels
Slew Rate	230	V/µs
-3dB Bandwidth	175	MHz
Current - Input Bias	1.2	µA
Voltage - Input Offset	1	mV
Current - Supply (per channel)	3.4	mA
Current - Output / Channel	85	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	30	V
Operating Temperature Range	0 to 70	°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

Substitute parts for the THS4082CDR are qualified based on the following criteria:

Mechanical Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB footprint compatibility without layout redesign.

Functional Equivalence: All substitutes must be dual-channel voltage feedback amplifiers (2 circuits) to maintain circuit topology and pin configuration compatibility.

Electrical Parameter Alignment: Substitutes are grouped into two categories based on performance characteristics:

Direct Performance Substitutes (AD826 Series): Parts with -3dB bandwidth of 50 MHz and slew rate of 350 V/µs. These operate within the supply voltage range of 5V to 36V, exceeding the THS4082CDR minimum supply requirement of 10V. Input bias current is 3.3 µA and input offset voltage is 500 µV.
Enhanced Performance Substitutes (AD828 Series & ISL55002 Series): Parts with higher bandwidth (130 MHz for AD828, 200 MHz for ISL55002) and higher slew rates (450 V/µs for AD828, 300 V/µs for ISL55002). These provide performance headroom for demanding applications.

Compliance & Certification: All substitute parts maintain RoHS3 compliance and EAR99 export classification. Operating temperature ranges vary; AD826 and AD828 series support -40°C to 85°C, while ISL55002 variants also support this extended range.

Packaging Variants: Substitutes are available in multiple packaging formats (Tube, Cut Tape & Digi-Reel®, Tape & Reel) to accommodate different procurement and assembly workflows.

Parameter Comparison

Parameter	THS4082CDR	AD826ARZ / AD826ARZ-REEL / AD826ARZ-REEL7	AD828ARZ / AD828ARZ-REEL7	ISL55002IBZ / ISL55002IBZ-T7
Manufacturer	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Intersil / Renesas
Amplifier Type	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback
Number of Circuits	2	2	2	2
Slew Rate (V/µs)	230	350	450	300
-3dB Bandwidth (MHz)	175	50	130	200
Current - Input Bias (µA)	1.2	3.3	Not Specified	0.6
Voltage - Input Offset (mV)	1	0.5	Not Specified	1.2
Current - Supply (mA, x2 Channels)	3.4	6.6	14	8.5
Current - Output / Channel (mA)	85	50	50	140
Voltage - Supply Span (Min)	10 V	5 V	5V / ±2.5V	4.5 V
Voltage - Supply Span (Max)	30 V	36 V	36V / ±18V	30 V
Operating Temperature (°C)	0 to 70	-40 to 85	-40 to 85	-40 to 85
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

Primary Substitutes (AD826 Series): The AD826ARZ, AD826ARZ-REEL, and AD826ARZ-REEL7 variants are manufacturer-recommended substitutes with identical dual-channel voltage feedback architecture and 8-SOIC packaging. These parts are Active status with RoHS3 compliance and MSL 1 rating. The AD826 series provides lower bandwidth (50 MHz) compared to the THS4082CDR (175 MHz), making them suitable for applications where the THS4082CDR's bandwidth exceeds system requirements. Supply voltage compatibility is enhanced with a 5V minimum specification versus the THS4082CDR's 10V minimum. Packaging variants (Tube, Cut Tape & Digi-Reel®) accommodate different procurement workflows.

Secondary Substitutes (AD828 Series): The AD828ARZ and AD828ARZ-REEL7 provide enhanced performance with 130 MHz bandwidth and 450 V/µs slew rate, exceeding THS4082CDR specifications. These are Active status, RoHS3 compliant, with MSL 1 rating. Higher supply current (14 mA total) must be considered in power budget calculations. Extended operating temperature range (-40°C to 85°C) supports broader environmental applications compared to the THS4082CDR (0°C to 70°C).

Tertiary Substitutes (ISL55002 Series): The ISL55002IBZ and ISL55002IBZ-T7 offer the highest bandwidth (200 MHz) and highest output current capability (140 mA per channel). Both are Active status and RoHS3 compliant. The ISL55002IBZ-T7 carries MSL 3 (168 Hours) rating, requiring controlled moisture exposure during storage and assembly compared to the unlimited MSL 1 rating of other substitutes. Supply voltage range (4.5V to 30V) aligns with THS4082CDR maximum specification.

Compliance Verification: All substitute parts maintain EAR99 export classification and REACH unaffected status, matching the THS4082CDR regulatory profile. Selection should verify that the extended operating temperature ranges of substitute parts do not conflict with application thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can AD826ARZ be used as a direct replacement for THS4082CDR without PCB modifications?

A: Yes, mechanical substitution is possible. Both devices use the 8-SOIC (0.154", 3.90mm Width) surface mount package with identical pin configuration for dual-channel voltage feedback amplifiers. However, electrical performance differs: AD826ARZ provides 50 MHz bandwidth versus THS4082CDR's 175 MHz. Circuit design must verify that reduced bandwidth does not degrade system performance.

Q: What is the key difference between AD826 and AD828 series substitutes?

A: The AD828 series provides higher performance specifications: 130 MHz bandwidth (versus AD826's 50 MHz), 450 V/µs slew rate (versus 350 V/µs), and higher output current capability. AD828 also requires higher supply current (14 mA total versus 6.6 mA for AD826). Selection depends on application bandwidth and slew rate requirements.

Q: Why does ISL55002IBZ-T7 have MSL 3 rating while other substitutes have MSL 1?

A: Moisture Sensitivity Level (MSL) reflects the device's susceptibility to moisture absorption during storage. MSL 3 (168 Hours) requires controlled humidity storage and faster assembly processing compared to MSL 1 (Unlimited). This affects supply chain handling and assembly scheduling but does not impact electrical performance after assembly completion.

Q: Are all substitute parts available in the same packaging options as THS4082CDR?

A: No. THS4082CDR is specified as Tape & Reel (TR) packaging. Substitutes are available in multiple formats: AD826 series offers Tube, Cut Tape & Digi-Reel®, and Tape & Reel variants; AD828 series offers Tube and Cut Tape & Digi-Reel®; ISL55002 series offers standard and Tape & Reel variants. Packaging selection must match procurement and assembly requirements.

Q: Can THS4082CDR operate at supply voltages below 10V if substituted with AD826ARZ?

A: Yes. AD826ARZ minimum supply voltage is 5V, enabling operation in lower-voltage systems. However, this substitution introduces bandwidth reduction (50 MHz versus 175 MHz). Circuit design must confirm that lower bandwidth is acceptable for the application.

Q: What is the impact of higher supply current in AD828 substitutes on system power budget?

A: AD828 series draws 14 mA total supply current (dual channels) compared to THS4082CDR's 3.4 mA per channel (6.8 mA total). This represents approximately 2x increase in quiescent current consumption. Power supply capacity and thermal management must be re-evaluated when substituting with AD828 series.

Q: Are all substitute parts suitable for extended temperature range applications?

A: THS4082CDR operates 0°C to 70°C. AD826, AD828, and ISL55002 series all support -40°C to 85°C extended range. If the application requires only 0°C to 70°C operation, all substitutes are compatible. If extended low-temperature operation below 0°C is required, THS4082CDR cannot be substituted; only AD826, AD828, and ISL55002 series qualify.

Q: What compliance certifications are maintained across all substitute parts?

A: All substitute parts maintain RoHS3 compliance, EAR99 export classification, and REACH unaffected status, matching THS4082CDR regulatory requirements. No additional compliance verification is required for these certifications when substituting parts.

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