THS4082CDG4 Equivalent & Substitute Parts

Part Overview

The THS4082CDG4 is a voltage feedback amplifier integrated circuit manufactured by Texas Instruments, containing two independent circuits in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement.

The THS4082CDG4 operates across a supply voltage range of 10V to 30V with a slew rate of 230V/µs and -3dB bandwidth of 175 MHz. With dual channels delivering 85 mA output current per channel and input bias current of 1.2 µA, this amplifier is suitable for general-purpose voltage feedback applications requiring moderate bandwidth and output drive capability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Voltage Feedback	—
Number of Circuits	2	—
Slew Rate	230	V/µs
-3dB Bandwidth	175	MHz
Current - Input Bias	1.2	µA
Voltage - Input Offset	1	mV
Current - Supply (x2 Channels)	3.4	mA
Current - Output / Channel	85	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	0 to 70	°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 THS4082CDG4 is determined by strict alignment of electrical and mechanical parameters within the voltage feedback amplifier category. The following criteria establish valid substitution relationships:

Primary Substitution Criteria:

Amplifier Type: Voltage Feedback (mandatory)
Number of Circuits: 2 (mandatory)
Package / Case: 8-SOIC form factor (mandatory)
Mounting Type: Surface Mount (mandatory)
Supply Voltage Range: Minimum 10V to 30V overlap required
Slew Rate: 230V/µs or greater
-3dB Bandwidth: 175 MHz or greater
Output Current per Channel: 85 mA or greater
Input Bias Current: 1.2 µA or less
Input Offset Voltage: 1 mV or less

Substitute Categories:

Category 1: Direct Functional Equivalents (Identical Base Product) THS4082CD represents the active production equivalent of THS4082CDG4, differing only in packaging configuration (Tube vs. unspecified). All electrical specifications remain identical.

Category 2: Enhanced Performance Substitutes (Analog Devices AD826 Series) AD826ARZ, AD826ARZ-REEL, and AD826ARZ-REEL7 provide superior slew rate (350V/µs vs. 230V/µs) and extended temperature range (-40°C to 85°C vs. 0°C to 70°C). These devices maintain 8-SOIC packaging and dual-circuit configuration. Supply voltage range extends to 5V minimum and 36V maximum, providing broader operational flexibility. Input bias current increases to 3.3 µA and input offset voltage reduces to 500 µV.

Category 3: High-Bandwidth Substitutes (Analog Devices AD828 Series) AD828ARZ and AD828ARZ-REEL7 deliver increased -3dB bandwidth (130 MHz) and slew rate (450V/µs) with dual circuits in 8-SOIC packaging. These devices support extended supply voltage range (5V to 36V single supply, ±2.5V to ±18V dual supply) and extended temperature range (-40°C to 85°C).

Category 4: Intersil ISL55002 Series ISL55002IBZ, ISL55002IBZ-T13, and ISL55002IBZ-T7 provide the highest -3dB bandwidth (200 MHz) and slew rate (300V/µs) among substitutes. These devices feature dual circuits in 8-SOIC packaging with supply voltage range of 4.5V to 30V and extended temperature range (-40°C to 85°C). Output current per channel reaches 140 mA, exceeding the original specification.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	-3dB Bandwidth (MHz)	Input Bias (µA)	Input Offset (mV)	Supply Min (V)	Supply Max (V)	Output Current/Ch (mA)	Temp Range (°C)	Packaging
THS4082CDG4	Texas Instruments	Obsolete	230	175	1.2	1	10	30	85	0 to 70	8-SOIC
THS4082CD	Texas Instruments	Active	230	175	1.2	1	10	30	85	0 to 70	8-SOIC
AD826ARZ	Analog Devices Inc.	Active	350	50	3.3	0.5	5	36	50	-40 to 85	8-SOIC
AD826ARZ-REEL	Analog Devices Inc.	Active	350	50	3.3	0.5	5	36	50	-40 to 85	8-SOIC
AD826ARZ-REEL7	Analog Devices Inc.	Active	350	50	3.3	0.5	5	36	50	-40 to 85	8-SOIC
AD828ARZ	Analog Devices Inc.	Active	450	130	—	—	5	36	50	-40 to 85	8-SOIC
AD828ARZ-REEL7	Analog Devices Inc.	Active	450	130	—	—	5	36	50	-40 to 85	8-SOIC
ISL55002IBZ	Intersil	Active	300	200	0.6	1.2	4.5	30	140	-40 to 85	8-SOIC
ISL55002IBZ-T13	Renesas Electronics Corporation	Active	300	200	0.6	1.2	4.5	30	140	-40 to 85	8-SOIC
ISL55002IBZ-T7	Renesas Electronics Corporation	Active	300	200	0.6	1.2	4.5	30	140	-40 to 85	8-SOIC

Engineering Selection Recommendations

Primary Recommendation: THS4082CD

THS4082CD is the direct active equivalent of THS4082CDG4, manufactured by Texas Instruments. This part maintains identical electrical specifications and 8-SOIC packaging. Selection of THS4082CD eliminates all substitution variables and ensures pin-for-pin compatibility with existing circuit designs. The device is ROHS3 compliant with MSL 1 rating, matching the original part's environmental specifications. Current inventory of 913 units supports production requirements.

Secondary Recommendation: ISL55002IBZ-T13 or ISL55002IBZ-T7

For applications requiring enhanced bandwidth performance (200 MHz vs. 175 MHz) and superior output current capability (140 mA vs. 85 mA per channel), the ISL55002IBZ series from Renesas Electronics Corporation provides active production status with extended temperature range (-40°C to 85°C). These devices maintain 8-SOIC packaging and dual-circuit configuration. ROHS3 compliance is confirmed. The lower minimum supply voltage (4.5V vs. 10V) expands operational flexibility. MSL 3 rating (168 hours) requires appropriate moisture control during storage and assembly.

Tertiary Recommendation: AD826ARZ or AD826ARZ-REEL7

For applications where extended temperature range (-40°C to 85°C) and broader supply voltage compatibility (5V to 36V) are required, AD826ARZ variants from Analog Devices Inc. provide active production status. These devices deliver superior slew rate (350V/µs vs. 230V/µs). The -3dB bandwidth of 50 MHz is lower than the original specification and suitable only for applications not requiring the full 175 MHz bandwidth of THS4082CDG4. ROHS3 compliance and MSL 1 rating are confirmed.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance and EAR99 export classification. Moisture sensitivity levels range from MSL 1 (unlimited) to MSL 3 (168 hours), requiring appropriate handling protocols during manufacturing.

Frequently Asked Questions (FAQ)

Q1: Can THS4082CD be used as a direct replacement for THS4082CDG4?

Yes. THS4082CD is the active production equivalent of THS4082CDG4. All electrical parameters, pin configuration, and 8-SOIC package dimensions are identical. The only difference is packaging format (Tube vs. unspecified). No circuit modifications are required.

Q2: What is the primary reason for substituting THS4082CDG4?

THS4082CDG4 is classified as obsolete. THS4082CD provides the same functionality with active production status and ongoing manufacturer support.

Q3: Are the ISL55002IBZ variants pin-compatible with THS4082CDG4?

Yes. ISL55002IBZ, ISL55002IBZ-T13, and ISL55002IBZ-T7 share identical 8-SOIC pin configuration and dual voltage feedback amplifier topology. Pin-for-pin substitution is possible. However, the enhanced -3dB bandwidth (200 MHz vs. 175 MHz) and output current (140 mA vs. 85 mA per channel) may require circuit optimization for optimal performance.

Q4: What is the difference between AD826ARZ, AD826ARZ-REEL, and AD826ARZ-REEL7?

These three part numbers represent identical electrical specifications and differ only in packaging format. AD826ARZ is supplied in Tube packaging. AD826ARZ-REEL and AD826ARZ-REEL7 are supplied in Cut Tape and Digi-Reel format. Selection depends on procurement and assembly requirements.

Q5: Can AD828ARZ replace THS4082CDG4 in all applications?

AD828ARZ provides enhanced slew rate (450V/µs vs. 230V/µs) and -3dB bandwidth (130 MHz vs. 175 MHz). While the bandwidth is lower, the superior slew rate may benefit high-speed transient applications. Pin configuration and 8-SOIC packaging are compatible. Circuit validation is recommended for bandwidth-critical applications.

Q6: What is the moisture sensitivity level (MSL) difference between substitutes?

THS4082CDG4 and most substitutes carry MSL 1 rating (unlimited shelf life). ISL55002IBZ-T13 and ISL55002IBZ-T7 carry MSL 3 rating (168 hours maximum shelf life at 60% relative humidity and 30°C). MSL 3 components require controlled storage and accelerated assembly timelines to prevent moisture absorption.

Q7: Do all substitutes support the 10V to 30V supply range of THS4082CDG4?

THS4082CD supports 10V to 30V. AD826ARZ variants support 5V to 36V (broader range). AD828ARZ supports 5V to 36V single supply or ±2.5V to ±18V dual supply. ISL55002IBZ variants support 4.5V to 30V. All substitutes accommodate the original 10V to 30V range with margin.

Q8: Which substitute offers the best performance upgrade?

ISL55002IBZ series provides the highest -3dB bandwidth (200 MHz) and output current per channel (140 mA), representing the most significant performance enhancement. AD828ARZ series offers the highest slew rate (450V/µs) for transient-sensitive applications. Selection depends on specific application requirements.

Q9: Are all substitutes ROHS3 compliant?

Yes. All listed substitutes are ROHS3 compliant, meeting environmental and hazardous substance restrictions.

Q10: What packaging options are available for each substitute?

THS4082CD is supplied in Tube. AD826ARZ is supplied in Tube. AD826ARZ-REEL and AD826ARZ-REEL7 are supplied in Cut Tape and Digi-Reel format. AD828ARZ is supplied in Tube. AD828ARZ-REEL7 is supplied in Cut Tape and Digi-Reel format. ISL55002IBZ is supplied in standard packaging. ISL55002IBZ-T13 and ISL55002IBZ-T7 are supplied in Tape & Reel format. Selection depends on assembly equipment compatibility and procurement volume requirements.

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