OPA690IDRG4 Equivalent & Substitute Parts

Part Overview

The OPA690IDRG4 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, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The OPA690IDRG4 delivers high-speed amplification with a 300 MHz gain bandwidth product and 1800 V/µs slew rate, suitable for applications requiring wideband signal conditioning and high-frequency amplification.

Substiute Parts

OPA690IDRG4

Texas InstrumentsIn Stock: 5398OPA690IDRG4 Datasheet

Current PartRFQ

OPA690IDR

Texas InstrumentsIn Stock: 19383OPA690IDR Datasheet

Parametric EquivalentRFQ

AD8038ARZ-REEL7

Analog Devices Inc.In Stock: 7581AD8038ARZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OPA690IDRG4 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Amplifier Type: Voltage Feedback
• Number of Circuits: 1
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C to 85°C minimum
• Voltage Supply Span: Minimum 5 V to Maximum 12 V

Secondary Compatibility Parameters:

• Slew Rate: 1800 V/µs or greater
• Gain Bandwidth Product: 300 MHz or greater
• -3dB Bandwidth: 500 MHz or greater
• Current - Input Bias: 3 µA or lower
• Voltage - Input Offset: 1 mV or lower
• Current - Supply: 5.5 mA or lower
• Current - Output / Channel: 190 mA or greater

Substitute parts must satisfy all primary criteria and maintain compatibility within the secondary parameters to ensure functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

OPA690IDR (Texas Instruments)

The OPA690IDR is a parametric equivalent to the OPA690IDRG4, sharing identical electrical specifications and package configuration. Both devices are voltage feedback amplifiers with 1800 V/µs slew rate, 300 MHz gain bandwidth product, and 500 MHz -3dB bandwidth. The OPA690IDR maintains active product status, ensuring continued availability and manufacturing support. This part is supplied in Cut Tape and Digi-Reel packaging formats, with 19,293 units currently in stock. The OPA690IDR is ROHS3 compliant and carries identical moisture sensitivity classification (MSL 2, 1 Year). Selection of the OPA690IDR provides direct functional replacement with no circuit redesign required.

AD8038ARZ-REEL7 (Analog Devices Inc.)

The AD8038ARZ-REEL7 is a manufacturer-recommended substitute offering voltage feedback amplification in the same 8-SOIC package. This device operates across the required temperature range (-40°C to 85°C) and supports the specified supply voltage span (3 V to 12 V minimum, exceeding the 5 V requirement). The AD8038ARZ-REEL7 demonstrates superior performance in input bias current (400 nA versus 3 µA) and input offset voltage (500 µV versus 1 mV). However, the slew rate is reduced to 425 V/µs and -3dB bandwidth is 350 MHz, representing lower high-frequency performance. The AD8038ARZ-REEL7 is ROHS3 compliant with improved moisture sensitivity (MSL 1, Unlimited). Selection of this substitute requires verification that reduced slew rate and bandwidth specifications are acceptable for the target application.

Frequently Asked Questions (FAQ)

Q: Can the OPA690IDR directly replace the OPA690IDRG4 without circuit modification?

A: Yes. The OPA690IDR is a parametric equivalent with identical electrical specifications, including slew rate (1800 V/µs), gain bandwidth product (300 MHz), -3dB bandwidth (500 MHz), input bias current (3 µA), input offset voltage (1 mV), supply current (5.5 mA), output current (190 mA), and supply voltage range (5 V to 12 V). Both devices are housed in 8-SOIC packages with identical pinouts. No circuit redesign is necessary.

Q: What are the key differences between the OPA690IDR and AD8038ARZ-REEL7?

A: Both are voltage feedback amplifiers in 8-SOIC packages with -40°C to 85°C operating temperature. The OPA690IDR maintains the original 1800 V/µs slew rate and 500 MHz -3dB bandwidth. The AD8038ARZ-REEL7 offers lower slew rate (425 V/µs) and reduced -3dB bandwidth (350 MHz), but provides superior input bias current (400 nA) and input offset voltage (500 µV). The AD8038ARZ-REEL7 supports lower minimum supply voltage (3 V versus 5 V) and has improved moisture sensitivity (MSL 1 versus MSL 2).

Q: Is the AD8038ARZ-REEL7 suitable for high-frequency applications requiring 500 MHz bandwidth?

A: No. The AD8038ARZ-REEL7 specifies -3dB bandwidth of 350 MHz, which is below the OPA690IDRG4 specification of 500 MHz. Applications requiring full 500 MHz bandwidth performance must use the OPA690IDR for equivalent performance.

Q: What is the significance of the 8-SOIC package specification?

A: The 8-SOIC (0.154", 3.90mm Width) package is a surface mount configuration with standardized pinout and footprint. All three devices (OPA690IDRG4, OPA690IDR, and AD8038ARZ-REEL7) use this identical package, ensuring mechanical and electrical compatibility on printed circuit boards without layout modifications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The OPA690IDRG4, OPA690IDR, and AD8038ARZ-REEL7 are all ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: What is the difference between MSL 2 (1 Year) and MSL 1 (Unlimited)?

A: Moisture Sensitivity Level (MSL) indicates the device's susceptibility to moisture absorption during storage and handling. MSL 2 (1 Year) requires storage in controlled humidity conditions and has a one-year shelf life from the date of manufacture. MSL 1 (Unlimited) has no moisture sensitivity restrictions and indefinite shelf life. The AD8038ARZ-REEL7 offers superior moisture tolerance compared to the OPA690 variants.

Q: Can the AD8038ARZ-REEL7 be used in applications with 5 V to 12 V supply voltage?

A: Yes. The AD8038ARZ-REEL7 supports supply voltage from 3 V to 12 V, which encompasses the 5 V to 12 V range of the OPA690IDRG4. However, applications requiring the full 1800 V/µs slew rate and 500 MHz bandwidth of the original device should use the OPA690IDR.

Q: What inventory status should influence component selection?

A: The OPA690IDR has 19,293 units in stock, while the AD8038ARZ-REEL7 has 7,486 units available. Both devices maintain active product status with ongoing manufacturing support. The OPA690IDRG4 is obsolete with 5,300 units remaining in inventory. For long-term production continuity, the OPA690IDR is the preferred selection due to higher inventory levels and parametric equivalence.