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TS616IDWT Equivalent & Substitute Parts
Part Overview
The TS616IDWT is a Current Feedback Amplifier with 2 circuits in an 8-SOIC package manufactured by STMicroelectronics. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The TS616IDWT operates across a 5V to 12V supply span with a slew rate of 420V/µs and -3dB bandwidth of 40 MHz, designed for applications requiring dual-channel current feedback amplification in surface mount configurations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Amplifier Type | Current Feedback |
| Number of Circuits | 2 |
| Slew Rate | 420V/µs |
| -3dB Bandwidth | 40 MHz |
| Current - Input Bias | 5 µA |
| Voltage - Input Offset | 1 mV |
| Current - Supply | 13.5 mA |
| Current - Output / Channel | 490 mA |
| Voltage - Supply Span (Min) | 5 V |
| Voltage - Supply Span (Max) | 12 V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the TS616IDWT is determined by the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: Current Feedback (required for functional equivalence)
- Number of Circuits: 2 (dual-channel configuration)
- Package / Case: 8-SOIC form factor with 0.154" width and 3.90mm width
- Mounting Type: Surface Mount
- Operating Temperature Range: -40°C ~ 85°C (minimum requirement)
- Voltage Supply Span: Minimum 5V to Maximum 12V compatibility
Secondary Performance Parameters:
- Slew Rate: 420V/µs or higher
- -3dB Bandwidth: 40 MHz or higher
- Current - Output / Channel: 490 mA or higher
- Current - Supply: 13.5 mA or lower (power efficiency consideration)
Substitute parts are grouped into two categories based on amplifier type: Current Feedback Amplifiers (direct functional equivalents) and General Purpose Amplifiers (alternative topology with different performance characteristics). All substitute parts maintain ROHS3 compliance, MSL 1 rating, and surface mount 8-SOIC packaging.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | -3dB Bandwidth (MHz) | Current - Input Bias (µA) | Voltage - Input Offset (mV) | Current - Supply (mA) | Current - Output / Channel (mA) | Voltage - Supply Span Min (V) | Voltage - Supply Span Max (V) | Operating Temperature (°C) | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TS616IDWT | STMicroelectronics | Current Feedback | 420 | 40 | 5 | 1 | 13.5 | 490 | 5 | 12 | -40 ~ 85 | Obsolete |
| AD8012ARZ | Analog Devices Inc. | Current Feedback | 2250 | 350 | 3 | 1.5 | 3.4 | 125 | 3 | 12 | -40 ~ 85 | Active |
| AD8012ARZ-REEL | Analog Devices Inc. | Current Feedback | 2250 | 350 | 3 | 1.5 | 3.4 | 125 | 3 | 12 | -40 ~ 85 | Active |
| AD8012ARZ-REEL7 | Analog Devices Inc. | Current Feedback | 2250 | 350 | 3 | 1.5 | 3.4 | 125 | 3 | 12 | -40 ~ 85 | Active |
| AD8017ARZ | Analog Devices Inc. | General Purpose | 1600 | 160 | 16 | 1.8 | 14 | 270 | 4.4 | 12 | -40 ~ 85 | Active |
| AD8017ARZ-REEL | Analog Devices Inc. | General Purpose | 1600 | 160 | 16 | 1.8 | 14 | 270 | 4.4 | 12 | -40 ~ 85 | Active |
| AD8017ARZ-REEL7 | Analog Devices Inc. | General Purpose | 1600 | 160 | 16 | 1.8 | 14 | 270 | 4.4 | 12 | -40 ~ 85 | Active |
| LT1497CS8#PBF | Analog Devices Inc. | Current Feedback | 900 | 50 | 7 | 3 | 14 | 220 | 5 | 30 | 0 ~ 70 | Active |
| LT1497CS8#TR | Analog Devices Inc. | Current Feedback | 900 | 50 | 7 | 3 | 14 | 220 | 5 | 30 | 0 ~ 70 | Active |
| LT1497CS8#TRPBF | Analog Devices Inc. | Current Feedback | 900 | 50 | 7 | 3 | 14 | 220 | 5 | 30 | 0 ~ 70 | Active |
| OPA2677IDDA | Texas Instruments | Current Feedback | 2000 | 250 | 10 | 0.8 | 36 | 500 | 5 | 12 | -40 ~ 85 | Active |
Engineering Selection Recommendations
Direct Current Feedback Equivalents (Recommended Primary Substitutes):
The AD8012ARZ, AD8012ARZ-REEL, and AD8012ARZ-REEL7 from Analog Devices Inc. are the highest-performance current feedback alternatives. These parts exceed the TS616IDWT specifications across slew rate (2250V/µs vs. 420V/µs), bandwidth (350 MHz vs. 40 MHz), and output current capability (125 mA vs. 490 mA per channel). All three variants maintain identical electrical specifications and differ only in packaging format (Tube, Tape & Reel, and Cut Tape & Digi-Reel respectively). These parts are Active status, ROHS3 compliant, and MSL 1 rated.
Alternative Current Feedback Option:
The LT1497CS8 series (available as #PBF, #TR, and #TRPBF variants) from Analog Devices Inc. provides a current feedback topology with moderate performance enhancement. The LT1497 offers 900V/µs slew rate and 50 MHz bandwidth, representing a middle ground between the TS616IDWT and AD8012 series. This part supports extended supply voltage to 30V and is Active status with ROHS3 compliance. Operating temperature range is 0°C to 70°C, which is narrower than the TS616IDWT specification.
General Purpose Alternative:
The AD8017ARZ series (available as standard, -REEL, and -REEL7 variants) offers general purpose amplification with 1600V/µs slew rate and 160 MHz bandwidth. This topology differs from the current feedback architecture but maintains dual-channel configuration, surface mount 8-SOIC packaging, and -40°C to 85°C operating range. The AD8017 series is suitable for applications where current feedback topology is not mandatory.
High-Performance Option:
The OPA2677IDDA from Texas Instruments represents the highest-performance substitute with 2000V/µs slew rate, 250 MHz bandwidth, and 500 mA output current per channel. This part uses an 8-PowerSOIC package variant and carries MSL 3 rating (168 Hours), which differs from the TS616IDWT MSL 1 specification. The OPA2677IDDA is Active status and ROHS3 compliant.
All substitute parts maintain ROHS3 compliance and are available in active production status, ensuring long-term procurement viability.
Frequently Asked Questions (FAQ)
Q: Can the AD8012ARZ directly replace the TS616IDWT in existing designs?
A: The AD8012ARZ is electrically compatible as a current feedback amplifier with 2 circuits in an 8-SOIC package. However, the AD8012ARZ has lower output current per channel (125 mA vs. 490 mA) and lower supply current (3.4 mA vs. 13.5 mA). Designs relying on the TS616IDWT's higher output current capability require verification. The AD8012ARZ operates with a minimum supply voltage of 3V, compared to the TS616IDWT's 5V minimum.
Q: What is the difference between AD8012ARZ, AD8012ARZ-REEL, and AD8012ARZ-REEL7?
A: These three part numbers are electrically identical. The differences are packaging formats: AD8012ARZ is supplied in Tube packaging, AD8012ARZ-REEL in Tape & Reel format, and AD8012ARZ-REEL7 in Cut Tape & Digi-Reel format. Selection depends on procurement and assembly requirements.
Q: Why does the LT1497CS8 have a narrower operating temperature range than the TS616IDWT?
A: The LT1497CS8 is specified for 0°C to 70°C operation, while the TS616IDWT operates from -40°C to 85°C. Applications requiring the full -40°C to 85°C range must use the AD8012, AD8017, or OPA2677 series instead.
Q: Is the OPA2677IDDA suitable for designs with strict moisture sensitivity requirements?
A: The OPA2677IDDA carries MSL 3 (168 Hours) rating, compared to the TS616IDWT's MSL 1 (Unlimited). Designs with extended storage or high-humidity environments should use MSL 1 rated alternatives such as the AD8012ARZ or AD8017ARZ series.
Q: What is the functional difference between current feedback and general purpose amplifier topologies?
A: Current feedback amplifiers (TS616IDWT, AD8012ARZ, LT1497CS8, OPA2677IDDA) use transimpedance feedback architecture, providing constant bandwidth independent of closed-loop gain. General purpose amplifiers (AD8017ARZ series) use voltage feedback topology, where bandwidth varies inversely with gain. Current feedback topology is preferred for high-speed, wide-bandwidth applications.
Q: Can the AD8017ARZ series be used as a direct substitute for the TS616IDWT?
A: The AD8017ARZ series provides dual-channel amplification in an 8-SOIC package with -40°C to 85°C operating range and ROHS3 compliance. However, the AD8017 uses general purpose (voltage feedback) topology rather than current feedback. This substitution is suitable only for applications where current feedback topology is not a functional requirement.
Q: What packaging considerations apply when substituting the TS616IDWT?
A: All substitute parts use 8-SOIC surface mount packaging with 0.154" width and 3.90mm width, maintaining PCB layout compatibility. Packaging format variants (Tube, Tape & Reel, Cut Tape & Digi-Reel) do not affect electrical performance or board-level compatibility.
Q: Are all substitute parts ROHS3 compliant?
A: Yes, all substitute parts listed are ROHS3 compliant. The TS616IDWT is also ROHS3 compliant, ensuring environmental regulation consistency across substitution options.
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