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OPA1602AIDGK Equivalent & Substitute Parts
Part Overview
The OPA1602AIDGK is a dual-channel audio amplifier integrated circuit manufactured by Texas Instruments, classified as a linear amplifier in the SoundPlus™ series. This rail-to-rail output operational amplifier is designed for audio signal processing applications requiring dual-circuit configurations in a compact 8-VSSOP surface mount package. The device is currently in active production status with 19,880 units available in inventory.
Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across different manufacturers and packaging variants. The OPA1602AIDGK has documented substitute relationships with Analog Devices Inc. general-purpose amplifier series, specifically the AD8622 and ADA4177-2 base product families in their 8-MSOP package configurations.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | — |
| Part Number | OPA1602AIDGK | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | Audio | — |
| Number of Circuits | 2 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | — |
| Supplier Device Package | 8-VSSOP | — |
| Mounting Type | Surface Mount | — |
| Voltage - Supply Span (Min) | 4.5 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -40 to 85 | °C |
| Slew Rate | 20 | V/µs |
| Gain Bandwidth Product | 35 | MHz |
| Current - Input Bias | 20 | nA |
| Voltage - Input Offset | 100 | µV |
| Current - Supply | 2.6 (x2 Channels) | mA |
| Current - Output / Channel | 30 | mA |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) | — |
| Product Status | Active | — |
Substitute Part Grouping Explanation
Substitute parts for the OPA1602AIDGK are identified based on the following critical parameters that determine functional and mechanical compatibility:
Primary Compatibility Criteria:
- Dual-circuit configuration (2 circuits per package)
- Rail-to-rail output capability
- 8-pin surface mount package (8-MSOP / 8-TSSOP form factor with 0.118" width, 3.00mm)
- Supply voltage range overlap (minimum 4.5V to 5V; maximum 30V to 36V)
- Operating temperature range compatibility (-40°C minimum; 85°C to 125°C maximum)
- Active product status
- ROHS3 compliance
Substitute Part Families:
The AD8622 series (AD8622ARMZ, AD8622ARMZ-R7, AD8622ARMZ-REEL) represents general-purpose dual-channel amplifiers with identical package geometry and pin configuration. These devices maintain rail-to-rail output and dual-circuit architecture with compatible supply voltage ranges (5V to 30V).
The ADA4177-2 series (ADA4177-2ARMZ, ADA4177-2ARMZ-R7, ADA4177-2ARMZ-RL) represents precision general-purpose dual-channel amplifiers with enhanced input offset voltage specifications (2µV versus 100µV). These devices also maintain compatible package geometry, supply voltage range (5V to 36V), and operating temperature range (-40°C to 125°C).
All substitute parts share identical mechanical compatibility through standardized 8-MSOP packaging and are available in multiple packaging variants (Tube, Cut Tape & Digi-Reel®, Tape & Reel).
Parameter Comparison
| Parameter | OPA1602AIDGK | AD8622ARMZ / AD8622ARMZ-R7 / AD8622ARMZ-REEL | ADA4177-2ARMZ / ADA4177-2ARMZ-R7 / ADA4177-2ARMZ-RL |
|---|---|---|---|
| Manufacturer | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. |
| Amplifier Type | Audio | General Purpose | General Purpose |
| Number of Circuits | 2 | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Voltage - Supply Span (Min) | 4.5 V | 5 V | 5 V |
| Voltage - Supply Span (Max) | 36 V | 30 V | 36 V |
| Operating Temperature | -40 to 85°C | -40 to 125°C | -40 to 125°C |
| Slew Rate | 20 V/µs | 0.48 V/µs | 1.5 V/µs |
| Gain Bandwidth Product | 35 MHz | 560 kHz | 3.5 MHz |
| Current - Input Bias | 20 nA | 45 pA | 300 pA |
| Voltage - Input Offset | 100 µV | 10 µV | 2 µV |
| Current - Supply | 2.6 mA (x2 Channels) | 215 µA (x2 Channels) | 500 µA (x2 Channels) |
| Current - Output / Channel | 30 mA | 40 mA | 25 mA |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active |
Engineering Selection Recommendations
AD8622 Series Selection:
The AD8622ARMZ, AD8622ARMZ-R7, and AD8622ARMZ-REEL variants are functionally identical devices differentiated only by packaging format (Tube, Cut Tape & Digi-Reel®, or Tape & Reel). Selection among these three variants depends on procurement and assembly requirements rather than electrical performance. The AD8622 series is suitable for applications where lower power consumption (215µA total supply current versus 2.6mA) is prioritized and where the reduced slew rate (0.48V/µs) and gain bandwidth product (560kHz) are compatible with system requirements. All AD8622 variants maintain ROHS3 compliance and offer improved moisture sensitivity rating (MSL 1 Unlimited versus MSL 2 1-Year).
ADA4177-2 Series Selection:
The ADA4177-2ARMZ, ADA4177-2ARMZ-R7, and ADA4177-2ARMZ-RL variants are functionally identical devices differentiated by packaging format (Tube, Cut Tape & Digi-Reel®, or Tape & Reel). The ADA4177-2 series provides intermediate performance characteristics between the OPA1602AIDGK and AD8622 series, with slew rate of 1.5V/µs and gain bandwidth product of 3.5MHz. This series is suitable for applications requiring improved input offset voltage specification (2µV) and extended maximum supply voltage compatibility (36V). All ADA4177-2 variants maintain ROHS3 compliance, unlimited moisture sensitivity rating, and active product status.
Compliance and Certification:
All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification consistent with the OPA1602AIDGK. All devices are classified as active products with ongoing manufacturer support.
Frequently Asked Questions (FAQ)
Q: Can AD8622ARMZ directly replace OPA1602AIDGK in existing PCB designs?
A: Mechanical replacement is possible due to identical 8-MSOP package geometry and pin configuration. However, electrical performance differs significantly. The AD8622 operates at lower power consumption (215µA versus 2.6mA total supply current) and exhibits reduced slew rate (0.48V/µs versus 20V/µs) and gain bandwidth product (560kHz versus 35MHz). Circuit validation is required to confirm compatibility with specific application requirements.
Q: What is the difference between AD8622ARMZ, AD8622ARMZ-R7, and AD8622ARMZ-REEL?
A: These three part numbers represent identical electrical devices with different packaging formats. AD8622ARMZ is supplied in Tube packaging. AD8622ARMZ-R7 is supplied in Cut Tape & Digi-Reel® format. AD8622ARMZ-REEL is supplied in Cut Tape & Digi-Reel® format with higher inventory availability (990,100 units). Selection depends on procurement volume and assembly equipment compatibility.
Q: Is the ADA4177-2 series a better substitute than AD8622?
A: The ADA4177-2 series provides higher slew rate (1.5V/µs versus 0.48V/µs) and gain bandwidth product (3.5MHz versus 560kHz), making it more suitable for applications requiring faster signal processing. The ADA4177-2 also offers superior input offset voltage specification (2µV versus 10µV). However, the AD8622 provides lower power consumption (215µA versus 500µA). Selection depends on specific application performance requirements.
Q: What is the minimum supply voltage for substitute parts?
A: The AD8622 series requires minimum 5V supply voltage, while the ADA4177-2 series also requires minimum 5V. The OPA1602AIDGK operates at minimum 4.5V. Applications requiring 4.5V operation cannot use either substitute series without additional power supply conditioning.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. The OPA1602AIDGK, AD8622 series (all variants), and ADA4177-2 series (all variants) are all ROHS3 compliant. All devices are REACH unaffected and classified as EAR99 for export purposes.
Q: What is the difference between MSL 2 (1 Year) and MSL 1 (Unlimited)?
A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be stored in ambient conditions before requiring baking prior to reflow soldering. OPA1602AIDGK has MSL 2 rating, requiring baking if stored longer than 1 year. AD8622 and ADA4177-2 series have MSL 1 rating with unlimited storage time, providing greater flexibility in inventory management and reducing preparation requirements before assembly.
Q: Can substitute parts operate at the full 36V maximum supply voltage of OPA1602AIDGK?
A: The ADA4177-2 series supports 36V maximum supply voltage, matching the OPA1602AIDGK specification. The AD8622 series is limited to 30V maximum supply voltage. Applications requiring 36V operation must use ADA4177-2 series substitutes.
Q: What is the output current capability difference?
A: OPA1602AIDGK provides 30mA per channel output current. AD8622 provides 40mA per channel (higher capability). ADA4177-2 provides 25mA per channel (lower capability). Applications requiring maximum output current should use AD8622 series; applications with lower current requirements can use ADA4177-2 series.
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