OPA1632DG4 Equivalent & Substitute Parts

Part Overview

The OPA1632DG4 is an audio amplifier integrated circuit manufactured by Texas Instruments, designed for single-circuit differential output applications. This device operates across a wide supply voltage range of 5V to 32V and delivers high slew rate performance at 50V/µs with a -3dB bandwidth of 180 MHz. The OPA1632DG4 is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications requiring audio amplification with differential output topology.

Substiute Parts

OPA1632DG4

Texas InstrumentsIn Stock: 746OPA1632DG4 Datasheet

Current PartRFQ

OPA1632D

Texas InstrumentsIn Stock: 1503OPA1632D Datasheet

MFR RecommendedRFQ

OPA1632DR

Texas InstrumentsIn Stock: 16515OPA1632DR Datasheet

MFR RecommendedRFQ

HA9P5127-5ZX96

Renesas Electronics CorporationIn Stock: 2778HA9P5127-5ZX96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA1632DG4 is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Electrical Compatibility Requirements:

• Amplifier Type: Audio
• Number of Circuits: 1
• Output Type: Differential
• Slew Rate: 50V/µs (minimum)
• -3dB Bandwidth: 180 MHz (minimum)
• Current - Input Bias: 2 µA (maximum)
• Voltage - Input Offset: 500 µV (maximum)
• Current - Supply: 14mA (maximum)
• Current - Output / Channel: 85 mA (minimum)
• Voltage - Supply Span: 5V to 32V (minimum range)
• Operating Temperature: -40°C to 85°C (minimum range)

Mechanical Compatibility Requirements:

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Supplier Device Package: 8-SOIC

Compliance Requirements:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts OPA1632D and OPA1632DR meet all electrical and mechanical compatibility criteria. Both are Texas Instruments products within the OPA1632 base product family, maintaining identical functional specifications and package geometry. The HA9P5127-5ZX96 from Renesas Electronics Corporation does not meet substitution criteria due to differences in amplifier type classification, output type specification, slew rate, bandwidth, and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

Recommended Substitutes:

OPA1632D and OPA1632DR are direct functional equivalents to the OPA1632DG4. Both parts maintain identical electrical specifications across all critical audio amplifier parameters, including slew rate, bandwidth, input bias current, input offset voltage, supply current, and output current capability. Both are ROHS3 compliant and carry MSL Level 1 moisture sensitivity rating.

OPA1632DR is the preferred substitute for new designs and ongoing production due to its Active product status, ensuring long-term availability and manufacturing support. OPA1632DR is supplied in Cut Tape and Digi-Reel packaging, providing flexibility for both prototype and high-volume manufacturing environments. Current inventory of OPA1632DR is 16,447 pieces.

OPA1632D remains available as a secondary substitute with Last Time Buy status, similar to the OPA1632DG4. Inventory of OPA1632D is 1,418 pieces. This part is suitable for applications requiring immediate replacement of existing OPA1632DG4 stock.

Non-Recommended Substitute:

HA9P5127-5ZX96 does not qualify as a substitute. This Renesas Electronics device is classified as a General Purpose amplifier rather than an Audio amplifier, lacks differential output specification, operates at significantly lower slew rate (10V/µs versus 50V/µs), provides lower output current capability (25 mA versus 85 mA), and supports a narrower operating temperature range (0°C to 75°C versus -40°C to 85°C). These parameter differences preclude functional equivalence in audio amplification applications.

Frequently Asked Questions (FAQ)

Q: Can OPA1632DR be used as a direct replacement for OPA1632DG4 in existing designs?

A: Yes. OPA1632DR is electrically and mechanically identical to OPA1632DG4. Both devices share the same 8-SOIC package geometry, identical electrical specifications, and equivalent compliance certifications. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tube) and product status (Active versus Last Time Buy). PCB layout and circuit design require no modification.

Q: What is the difference between OPA1632D and OPA1632DR?

A: OPA1632D and OPA1632DR are functionally identical audio amplifiers with identical electrical specifications. The difference is packaging and supply format. OPA1632D is supplied in Tube packaging, while OPA1632DR is supplied in Cut Tape and Digi-Reel format. OPA1632DR has Active product status with higher current inventory (16,447 pieces), while OPA1632D has Last Time Buy status with lower inventory (1,418 pieces). For new designs and production, OPA1632DR is recommended.

Q: Why is HA9P5127-5ZX96 not a suitable substitute?

A: HA9P5127-5ZX96 is a General Purpose amplifier, not an Audio amplifier. It lacks differential output capability, operates at 10V/µs slew rate (versus 50V/µs required), provides only 25 mA output current (versus 85 mA required), and supports operating temperature range of 0°C to 75°C (versus -40°C to 85°C required). These differences make it unsuitable for audio amplification applications requiring the OPA1632DG4 specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. OPA1632D, OPA1632DR, and HA9P5127-5ZX96 are all ROHS3 compliant. All parts carry MSL Level 1 (Unlimited) moisture sensitivity rating, indicating no special moisture handling requirements during storage or assembly.

Q: What is the supply voltage range compatibility?

A: OPA1632DG4, OPA1632D, and OPA1632DR all operate across 5V to 32V supply voltage range. HA9P5127-5ZX96 operates across 10V to 30V, which is narrower and incompatible with 5V supply applications.

Q: Can these parts be used interchangeably in high-frequency audio applications?

A: OPA1632D and OPA1632DR can be used interchangeably with OPA1632DG4 in high-frequency audio applications. Both maintain 180 MHz -3dB bandwidth and 50V/µs slew rate. HA9P5127-5ZX96 is not suitable due to significantly lower bandwidth performance (8.5 MHz gain bandwidth product) and reduced slew rate (10V/µs).