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OPA698IDR Equivalent & Substitute Parts
Part Overview
The OPA698IDR is a voltage feedback amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This single-circuit operational amplifier is designed for high-speed signal conditioning applications requiring a gain bandwidth product of 250 MHz and slew rate of 1100V/µs. The device operates across a 5V to 12V supply range and is rated for -40°C to 85°C operating temperatures. The OPA698IDR maintains Active product status with RoHS3 compliance and is currently in stock with substantial inventory availability.
Substitute components become necessary when addressing specific application requirements such as alternative packaging formats, enhanced performance specifications, different amplifier topologies (current feedback versus voltage feedback), or specialized thermal and reliability requirements that may exceed the original device capabilities.
Substiute Parts
Key Parameters
| Parameter | OPA698IDR 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 | -40 to 85 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 2 (1 Year) | — |
Substitute Part Grouping Explanation
Substitution logic for the OPA698IDR is determined by the following critical parameters: amplifier topology (voltage feedback versus current feedback), single-circuit configuration, surface mount or through-hole mounting capability, 8-pin package format, supply voltage compatibility (5V to 12V minimum range), operating temperature range (-40°C to 85°C minimum), and compliance certifications (RoHS3, REACH Unaffected, EAR99).
The substitute parts listed represent Analog Devices Inc. current feedback amplifier alternatives that maintain functional equivalence through comparable electrical performance within the specified supply and temperature operating windows. Current feedback topology substitutes provide enhanced bandwidth and slew rate characteristics while maintaining pin-compatible or functionally equivalent package configurations. Substitution is valid when the application circuit topology accommodates current feedback architecture and when the enhanced performance parameters do not introduce design complications.
Key parameters governing substitution eligibility:
- Single amplifier circuit configuration
- 8-pin package family (8-SOIC, 8-CERDIP, 8-PDIP, 8-LFCSP, or SOT-23-5)
- Supply voltage range overlap with 5V to 12V specification
- Operating temperature range minimum of -40°C to 85°C
- RoHS3 compliance and REACH Unaffected status
- Active product status
Parameter Comparison
| Parameter | OPA698IDR | 5962-9459301MPA | AD8000YRDZ | AD8000YRDZ-REEL7 | AD8001ANZ | AD8001AQ | AD8001ARTZ-REEL7 | AD8001ARZ | AD8001ARZ-REEL7 | AD8005ARTZ-REEL7 |
|---|---|---|---|---|---|---|---|---|---|---|
| Amplifier Type | Voltage Feedback | Current Feedback | Current Feedback | Current Feedback | Current Feedback | Current Feedback | Current Feedback | Current Feedback | Current Feedback | Current Feedback |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Slew Rate (V/µs) | 1100 | 1200 | 4100 | 4100 | 1200 | 1200 | 1200 | 1200 | 1200 | 280 |
| -3dB Bandwidth (MHz) | 450 | 380 | 1580 | 1580 | 880 | 880 | 795 | 715 | 715 | 270 |
| Current - Input Bias (µA) | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Voltage - Input Offset (mV) | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 5 |
| Current - Supply (mA) | 15.5 | 5 | 13.5 | 13.5 | 5 | 5 | 5 | 5 | 5 | 0.4 |
| Current - Output / Channel (mA) | 120 | 70 | 100 | 100 | 70 | 70 | 70 | 70 | 70 | 10 |
| Voltage - Supply Span Min (V) | 5 | 6 | 4.5 | 4.5 | 6 | 6 | 6 | 6 | 6 | 4 |
| Voltage - Supply Span Max (V) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature (°C) | -40 to 85 | -55 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| Mounting Type | Surface Mount | Through Hole | Surface Mount | Surface Mount | Through Hole | Through Hole | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm) | 8-CDIP (0.300", 7.62mm) | 8-SOIC (0.154", 3.90mm) Exposed Pad | 8-SOIC (0.154", 3.90mm) Exposed Pad | 8-DIP (0.300", 7.62mm) | 8-CDIP (0.300", 7.62mm) | SOT-23-5 | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | SOT-23-5 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 2 (1 Year) | 1 (Unlimited) | 3 (168 Hours) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Surface Mount 8-SOIC Package Equivalents (Direct Pin-Compatible Substitutes):
AD8001ARZ and AD8001ARZ-REEL7 provide direct 8-SOIC package compatibility with the OPA698IDR. Both devices maintain the same 0.154" (3.90mm) width specification and surface mount configuration. These current feedback amplifiers deliver 1200V/µs slew rate and 715 MHz bandwidth, exceeding the OPA698IDR performance envelope. Supply current consumption is reduced to 5mA compared to 15.5mA in the original device. Both variants maintain -40°C to 85°C operating temperature range and RoHS3 compliance. AD8001ARZ is supplied in tube packaging, while AD8001ARZ-REEL7 is supplied in cut tape and digi-reel format. Output current capability is 70mA, which is lower than the OPA698IDR specification of 120mA.
AD8000YRDZ and AD8000YRDZ-REEL7 offer enhanced performance in 8-SOIC-EP (exposed pad) configuration. These devices provide 4100V/µs slew rate and 1.58 GHz bandwidth with 100mA output current capability. Operating temperature extends to 125°C maximum. Moisture sensitivity level is 3 (168 hours), requiring controlled storage conditions. These variants are suitable for applications demanding superior high-frequency performance.
Through-Hole Package Alternatives:
5962-9459301MPA provides 8-CERDIP through-hole packaging with 1200V/µs slew rate and 380 MHz bandwidth. This device supports extended operating temperature range of -55°C to 125°C and features unlimited moisture sensitivity (MSL 1). Supply current is 5mA with 70mA output current capability.
AD8001ANZ and AD8001AQ offer through-hole mounting in 8-DIP and 8-CERDIP packages respectively. Both maintain 1200V/µs slew rate, 880 MHz bandwidth, and -40°C to 85°C operating temperature. These devices are suitable for legacy board designs or applications requiring through-hole component mounting.
Compact Surface Mount Alternatives:
AD8001ARTZ-REEL7 provides SOT-23-5 package configuration with 1200V/µs slew rate and 795 MHz bandwidth. This compact package reduces board space requirements while maintaining functional amplifier performance. Output current is limited to 70mA.
AD8005ARTZ-REEL7 offers the most compact footprint in SOT-23-5 configuration with reduced power consumption (400µA supply current). This device is suitable for low-power applications where bandwidth requirements are less stringent (270 MHz -3dB bandwidth). Output current capability is 10mA.
High-Performance Alternative:
AD8000YCPZ-REEL7 in 8-LFCSP (3x3) package delivers 4100V/µs slew rate and 1.35 GHz bandwidth with 100mA output current. This compact surface mount package provides superior performance characteristics for demanding signal conditioning applications.
All substitute devices maintain RoHS3 compliance and REACH Unaffected status. Selection should be based on specific package requirements, bandwidth performance needs, output current demands, and thermal operating range specifications of the target application.
Frequently Asked Questions (FAQ)
Q: Can AD8001ARZ directly replace OPA698IDR in existing circuit boards?
A: AD8001ARZ provides direct 8-SOIC package compatibility and can be used as a pin-compatible substitute in surface mount applications. However, the amplifier topology differs (current feedback versus voltage feedback), requiring circuit design verification. Output current capability is reduced from 120mA to 70mA. Applications requiring the full 120mA output current must use alternative devices or circuit modifications.
Q: What is the primary difference between voltage feedback and current feedback amplifier topologies?
A: Voltage feedback amplifiers (OPA698IDR) establish feedback through a voltage divider network and are characterized by high input impedance and predictable gain setting through resistor ratios. Current feedback amplifiers (AD8001 series, AD8000 series) establish feedback through transimpedance configuration and provide bandwidth independent of closed-loop gain. Current feedback topology typically delivers higher slew rates and bandwidth but requires different circuit design approaches.
Q: Which substitute provides the closest performance match to OPA698IDR?
A: AD8001ARZ-REEL7 and AD8001ARZ provide the most comparable performance envelope with 1200V/µs slew rate and 715-795 MHz bandwidth. These devices maintain the same operating temperature range (-40°C to 85°C) and package family (8-SOIC). However, output current is reduced to 70mA and supply current is reduced to 5mA.
Q: Are there substitutes available for applications requiring higher bandwidth than OPA698IDR?
A: AD8000YRDZ, AD8000YRDZ-REEL7, and AD8000YCPZ-REEL7 provide significantly enhanced bandwidth performance (1.35 to 1.58 GHz) with 4100V/µs slew rate. These devices are suitable for applications requiring superior high-frequency signal conditioning. Operating temperature extends to 125°C maximum. Moisture sensitivity level is 3 (168 hours), requiring controlled storage and handling.
Q: What packaging options are available for surface mount applications?
A: Surface mount alternatives include 8-SOIC standard package (AD8001ARZ, AD8001ARZ-REEL7, AD8000YRDZ, AD8000YRDZ-REEL7), 8-SOIC-EP with exposed pad (AD8000YRDZ variants), 8-LFCSP compact package (AD8000YCPZ-REEL7), and SOT-23-5 ultra-compact package (AD8001ARTZ-REEL7, AD8005ARTZ-REEL7).
Q: Which substitute is recommended for low-power applications?
A: AD8005ARTZ-REEL7 provides the lowest power consumption at 400µA supply current with 10mA output current capability. This device is suitable for battery-powered or energy-constrained applications where bandwidth requirements are moderate (270 MHz -3dB bandwidth). Package is SOT-23-5 surface mount.
Q: Do all substitute parts maintain RoHS3 compliance?
A: All listed substitute parts are RoHS3 compliant and REACH Unaffected. Compliance certifications are consistent across the substitute device family.
Q: What is the significance of moisture sensitivity level differences?
A: OPA698IDR has MSL 2 (1 Year) rating, indicating moderate moisture sensitivity. Substitute devices with MSL 1 (Unlimited) such as AD8001 series and 5962-9459301MPA have superior moisture tolerance and do not require time-limited storage. Devices with MSL 3 (168 Hours) such as AD8000 series require controlled storage conditions and have limited shelf life after moisture exposure.
Q: Can through-hole substitutes be used in surface mount board designs?
A: Through-hole devices (5962-9459301MPA, AD8001ANZ, AD8001AQ) require through-hole mounting technology and cannot be directly substituted in surface mount PCB designs without board redesign and component placement modifications.
Q: What output current capability should be considered when selecting a substitute?
A: OPA698IDR provides 120mA output current per channel. Most current feedback substitutes (AD8001 series) provide 70mA output current. AD8000 series provides 100mA output current. AD8005 series provides only 10mA output current. Application circuits requiring the full 120mA output current must use AD8000 series or verify that reduced output current is acceptable for the target application.
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