OPA698IDRG4 Equivalent & Substitute Parts

Part Overview

The OPA698IDRG4 is a voltage feedback amplifier integrated circuit manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production requirements. The OPA698IDRG4 delivers a gain bandwidth product of 250 MHz with a slew rate of 1100V/µs, suitable for high-speed signal conditioning applications requiring voltage feedback amplification in compact form factors.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Voltage Feedback	—
Number of Circuits	1	—
Slew Rate	1100	V/µs
Gain Bandwidth Product	250	MHz
-3dB Bandwidth	450	MHz
Current - Input Bias	3	µA
Voltage - Input Offset	2	mV
Current - Supply	15.5	mA
Current - Output / Channel	120	mA
Voltage - Supply Span (Min)	5	V
Voltage - Supply Span (Max)	12	V
Operating Temperature Range	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	2 (1 Year)	—

Substitute Part Grouping Explanation

Substitution of the OPA698IDRG4 is determined by strict equivalence across the following critical parameters: amplifier type (voltage feedback), number of circuits (1), package type (8-SOIC surface mount), operating temperature range (-40°C to 85°C), and compliance certifications (RoHS3, REACH Unaffected, EAR99).

The substitute parts are grouped into two categories:

Parametric Equivalent: OPA698IDR shares identical electrical specifications with the OPA698IDRG4, including slew rate (1100V/µs), gain bandwidth product (250 MHz), -3dB bandwidth (450 MHz), input bias current (3 µA), input offset voltage (2 mV), supply current (15.5mA), output current (120 mA), and supply voltage range (5V to 12V). The primary distinction is packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and product status (Active versus Obsolete).

Manufacturer Recommended Substitutes: AD8036ARZ-REEL and AD8036ARZ-REEL7 are Analog Devices Inc. voltage feedback amplifiers in 8-SOIC packages with active product status. These devices operate within the same temperature range and share the same package footprint. Electrical parameters differ in specific areas: slew rate (1200V/µs versus 1100V/µs), -3dB bandwidth (240 MHz versus 450 MHz), input bias current (4 µA versus 3 µA), supply current (20.5mA versus 15.5mA), and output current (70 mA versus 120 mA). Supply voltage range differs (6V to 12V versus 5V to 12V). Both AD8036 variants carry superior moisture sensitivity rating (MSL 1 Unlimited versus MSL 2 1 Year).

Parameter Comparison

Parameter	OPA698IDRG4	OPA698IDR	AD8036ARZ-REEL	AD8036ARZ-REEL7
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.
Product Status	Obsolete	Active	Active	Active
Amplifier Type	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback
Number of Circuits	1	1	1	1
Slew Rate (V/µs)	1100	1100	1200	1200
Gain Bandwidth Product (MHz)	250	250	—	—
-3dB Bandwidth (MHz)	450	450	240	240
Current - Input Bias (µA)	3	3	4	4
Voltage - Input Offset (mV)	2	2	2	2
Current - Supply (mA)	15.5	15.5	20.5	20.5
Current - Output / Channel (mA)	120	120	70	70
Voltage - Supply Span Min (V)	5	5	6	6
Voltage - Supply Span Max (V)	12	12	12	12
Operating Temperature (°C)	-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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	2 (1 Year)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

OPA698IDR is the primary parametric equivalent for direct replacement of the OPA698IDRG4. This Texas Instruments device maintains identical electrical performance across all specified parameters and operates within the same temperature and supply voltage ranges. The OPA698IDR carries active product status, ensuring long-term availability and supply chain continuity. Selection of OPA698IDR is appropriate for applications where the original OPA698IDRG4 specifications must be preserved without modification.

AD8036ARZ-REEL and AD8036ARZ-REEL7 are manufacturer-recommended alternatives from Analog Devices Inc. These devices are suitable for applications where the following parameter variations are acceptable: increased slew rate (1200V/µs), reduced -3dB bandwidth (240 MHz), marginally higher input bias current (4 µA), increased supply current (20.5mA), reduced output current capability (70 mA), and minimum supply voltage requirement of 6V. Both AD8036 variants offer superior moisture sensitivity protection (MSL 1 Unlimited) compared to the OPA698IDRG4 (MSL 2 1 Year). The distinction between AD8036ARZ-REEL and AD8036ARZ-REEL7 is packaging format; both are electrically identical. Selection of AD8036 variants is appropriate for new designs or applications where the electrical parameter differences do not impact system performance.

All substitute parts maintain compliance with RoHS3, REACH Unaffected, and EAR99 classifications, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can OPA698IDR be used as a direct replacement for OPA698IDRG4?

A: Yes. OPA698IDR is a parametric equivalent with identical electrical specifications, operating temperature range, supply voltage range, and 8-SOIC package footprint. The primary difference is product status (Active versus Obsolete) and packaging format (Cut Tape & Digi-Reel versus Tape & Reel). Electrical performance is equivalent.

Q: What are the key differences between OPA698IDRG4 and AD8036ARZ-REEL?

A: The AD8036ARZ-REEL differs in the following parameters: slew rate (1200V/µs versus 1100V/µs), -3dB bandwidth (240 MHz versus 450 MHz), input bias current (4 µA versus 3 µA), supply current (20.5mA versus 15.5mA), output current (70 mA versus 120 mA), and minimum supply voltage (6V versus 5V). Both devices share the same 8-SOIC package, operating temperature range, and input offset voltage specification.

Q: Are AD8036ARZ-REEL and AD8036ARZ-REEL7 electrically identical?

A: Yes. AD8036ARZ-REEL and AD8036ARZ-REEL7 are electrically identical. The designation difference reflects packaging format variation (Tape & Reel). Both devices carry the same electrical specifications, product status (Active), and moisture sensitivity rating (MSL 1 Unlimited).

Q: What is the significance of the moisture sensitivity level difference?

A: OPA698IDRG4 carries MSL 2 (1 Year), indicating the component must be used within one year of packaging. AD8036ARZ-REEL and AD8036ARZ-REEL7 carry MSL 1 (Unlimited), indicating no time restriction on component use after packaging. This difference affects storage and handling requirements but does not impact electrical performance.

Q: Can the AD8036 variants be used in applications requiring 5V minimum supply voltage?

A: No. AD8036ARZ-REEL and AD8036ARZ-REEL7 require a minimum supply voltage of 6V. Applications requiring 5V operation must use OPA698IDRG4 or OPA698IDR, both of which support 5V minimum supply voltage.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. OPA698IDRG4, OPA698IDR, AD8036ARZ-REEL, and AD8036ARZ-REEL7 are all ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute part should be selected for new designs?

A: Selection depends on application requirements. For designs requiring 5V operation and maximum output current (120 mA), use OPA698IDR. For designs where 6V minimum supply voltage is acceptable and superior moisture sensitivity protection is desired, use AD8036ARZ-REEL or AD8036ARZ-REEL7. Both options carry active product status and ensure long-term availability.

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