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TS912BIDT CMOS Amplifier Equivalent & Substitute Parts
Part Overview
The TS912BIDT is a dual-channel CMOS operational amplifier manufactured by STMicroelectronics, designed for rail-to-rail signal conditioning applications. This device features integrated input and output rail-to-rail capability, making it suitable for low-voltage and battery-powered systems. The TS912BIDT is classified as an Active product with AEC-Q100 automotive qualification, indicating suitability for automotive-grade applications requiring enhanced reliability standards.
Substitute parts are necessary when the TS912BIDT becomes unavailable due to supply constraints, end-of-life status, or when design requirements necessitate alternative performance characteristics such as improved input offset voltage, reduced input bias current, or enhanced bandwidth specifications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | CMOS | — |
| Number of Circuits | 2 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 1.3 | V/µs |
| Gain Bandwidth Product | 1.4 | MHz |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 2 | mV |
| Current - Supply (x2 Channels) | 230 | µA |
| Current - Output / Channel | 75 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 16 | V |
| Operating Temperature | -40 to 125 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Grade | Automotive | — |
| Qualification | AEC-Q100 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the TS912BIDT is determined by the following critical parameters:
Primary Compatibility Criteria:
- Dual-channel CMOS amplifier architecture (Number of Circuits = 2)
- Rail-to-rail output capability
- 8-SOIC surface mount package with 0.154" (3.90mm) width
- Operating temperature range of -40°C to 125°C (or compatible subset)
- Supply voltage span compatibility (minimum 2.7V to 16V or overlapping range)
Secondary Performance Criteria:
- Slew rate ≥ 1.0 V/µs (acceptable for equivalent performance)
- Gain bandwidth product ≥ 1.2 MHz (acceptable for equivalent performance)
- Input bias current ≤ 1 pA (or lower for improved performance)
- Input offset voltage ≤ 2 mV (or lower for improved performance)
- Output current per channel ≥ 30 mA (minimum acceptable)
Compliance and Certification:
- RoHS3 compliance required for environmental standards
- MSL Level 1 (Unlimited) for moisture sensitivity
- Product status: Active or Last Time Buy (Obsolete parts excluded from primary recommendations)
Substitute parts are grouped into two categories: Direct Substitutes (matching all primary criteria with equivalent performance) and Compatible Alternatives (matching primary criteria with performance trade-offs or enhancements).
Parameter Comparison
| Parameter | TS912BIDT | ADA4665-2ARZ | ADA4665-2ARZ-R7 | BD7542F-E2 | LMC6482AIMX/NOPB | LMC6492AEMX/NOPB |
|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Analog Devices Inc. | Analog Devices Inc. | Rohm Semiconductor | Texas Instruments | Texas Instruments |
| Amplifier Type | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Differential, Rail-to-Rail |
| Slew Rate (V/µs) | 1.3 | 1.0 | 1.0 | 0.3 | 1.3 | 1.3 |
| Gain Bandwidth Product (MHz) | 1.4 | 1.2 | 1.2 | 0.6 | 1.5 | 1.5 |
| Current - Input Bias (pA) | 1 | 0.1 | 0.1 | 1 | 0.02 | 0.15 |
| Voltage - Input Offset (mV) | 2 | 1 | 1 | 1 | 0.11 | 0.11 |
| Current - Supply (µA, x2 Channels) | 230 | 290 | 290 | 400 | 1300 | 1300 |
| Current - Output / Channel (mA) | 75 | 30 | 30 | 7 | 30 | 30 |
| Voltage - Supply Span Min (V) | 2.7 | 5 | 5 | 5 | 3 | 2.5 |
| Voltage - Supply Span Max (V) | 16 | 16 | 16 | 14.5 | 15.5 | 15.5 |
| Operating Temperature (°C) | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 125 |
| Package / Case | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.173", 4.40mm) | 8-SOIC (0.154", 3.90mm) | 8-SOIC (0.154", 3.90mm) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Tier 1: Direct Substitutes (Preferred)
ADA4665-2ARZ-R7 (Analog Devices Inc.) is the primary recommended substitute. This device matches the TS912BIDT in all critical parameters: dual CMOS amplifier, rail-to-rail output, 8-SOIC package (0.154" width), -40°C to 125°C operating range, and full supply voltage compatibility (5V to 16V). The ADA4665-2ARZ-R7 is supplied in Cut Tape & Digi-Reel® packaging, matching the TS912BIDT packaging format. Product status is Active with ROHS3 compliance and MSL Level 1. Performance characteristics show improved input bias current (0.1 pA vs. 1 pA) and input offset voltage (1 mV vs. 2 mV), with slightly reduced slew rate (1.0 V/µs vs. 1.3 V/µs) and gain bandwidth product (1.2 MHz vs. 1.4 MHz). Output current per channel is reduced to 30 mA, which is acceptable for most applications not requiring the full 75 mA capability.
LMC6492AEMX/NOPB (Texas Instruments) is a secondary direct substitute with enhanced performance specifications. This device provides dual CMOS amplifier architecture with differential and rail-to-rail output capability, 8-SOIC package (0.154" width), and -40°C to 125°C operating range. Supply voltage span is 2.5V to 15.5V, providing superior low-voltage operation compared to the TS912BIDT. Input bias current (0.15 pA) and input offset voltage (110 µV) are significantly improved. Slew rate and gain bandwidth product match the TS912BIDT (1.3 V/µs and 1.5 MHz respectively). Product status is Active with ROHS3 compliance. The primary trade-off is increased supply current (1.3 mA vs. 230 µA per dual channel), which may impact battery-powered applications. Packaging is Tape & Reel (TR).
Tier 2: Compatible Alternatives (Conditional Use)
ADA4665-2ARZ (Analog Devices Inc., Tube packaging) provides identical electrical specifications to the ADA4665-2ARZ-R7 but is supplied in Tube packaging rather than Cut Tape & Digi-Reel®. Selection of this variant depends on assembly process requirements and packaging handling capabilities.
LMC6482AIMX/NOPB (Texas Instruments) is suitable for applications where the extended temperature range of the TS912BIDT is not required. This device operates from -40°C to 85°C (vs. -40°C to 125°C for TS912BIDT), limiting its use in high-temperature automotive environments. However, it offers superior input offset voltage (110 µV vs. 2 mV) and input bias current (0.02 pA vs. 1 pA). Supply voltage range is 3V to 15.5V, and supply current is 1.3 mA per dual channel. Product status is Active with ROHS3 compliance and Cut Tape & Digi-Reel® packaging.
Tier 3: Limited Compatibility (Not Recommended for Direct Replacement)
BD7542F-E2 (Rohm Semiconductor) exhibits significant performance limitations that restrict its use as a substitute. The slew rate (0.3 V/µs) and gain bandwidth product (600 kHz) are substantially reduced compared to the TS912BIDT, making this device unsuitable for applications requiring higher signal fidelity or faster transient response. Operating temperature range is limited to -40°C to 85°C. Package width is 0.173" (4.40mm) versus 0.154" (3.90mm) for the TS912BIDT, requiring PCB layout verification. Output current per channel is severely limited to 7 mA. This device is suitable only for low-speed, low-current signal conditioning applications where the TS912BIDT's performance is excessive.
Automotive Grade Consideration:
The TS912BIDT carries AEC-Q100 automotive qualification. Among the substitute parts listed, only the TS912BIDT explicitly states automotive grade qualification. Applications requiring automotive-grade components should verify that alternative devices meet equivalent automotive qualification standards through the component manufacturer's documentation, as this information is not provided in the substitute part specifications.
Frequently Asked Questions (FAQ)
Q1: Can the ADA4665-2ARZ-R7 directly replace the TS912BIDT in automotive applications?
A: The ADA4665-2ARZ-R7 is electrically compatible with the TS912BIDT and operates across the required temperature range (-40°C to 125°C). However, the TS912BIDT carries explicit AEC-Q100 automotive qualification, while the ADA4665-2ARZ-R7 specifications provided do not include automotive grade designation. For automotive applications, verify with Analog Devices that the ADA4665-2ARZ-R7 meets equivalent automotive qualification standards before implementation.
Q2: What is the impact of reduced output current in substitute parts?
A: The TS912BIDT provides 75 mA output current per channel, while most substitute parts (ADA4665-2ARZ-R7, LMC6482AIMX/NOPB, LMC6492AEMX/NOPB) provide 30 mA per channel. The BD7542F-E2 provides only 7 mA. Output current capability determines the maximum load impedance that can be driven. Applications requiring high-current output (>30 mA per channel) must retain the TS912BIDT or verify that substitute parts can support the intended load. For typical signal conditioning applications with high-impedance loads, 30 mA is generally sufficient.
Q3: Why do some substitute parts have higher supply current consumption?
A: The LMC6482AIMX/NOPB and LMC6492AEMX/NOPB consume 1.3 mA per dual channel compared to 230 µA for the TS912BIDT. This increased consumption reflects enhanced performance characteristics, including superior input offset voltage (110 µV vs. 2 mV) and input bias current (0.02 to 0.15 pA vs. 1 pA). The trade-off between power consumption and precision must be evaluated based on application requirements. Battery-powered systems should prioritize the TS912BIDT or ADA4665-2ARZ-R7 for lower power consumption.
Q4: Is the BD7542F-E2 package physically compatible with the TS912BIDT?
A: The BD7542F-E2 uses an 8-SOIC package with 0.173" (4.40mm) width, while the TS912BIDT uses 8-SOIC with 0.154" (3.90mm) width. Although both are 8-SOIC packages, the different body widths may require PCB layout modifications. Pin pitch and lead spacing differ between these packages. Physical compatibility must be verified through detailed package drawings before PCB redesign. Direct socket substitution is not possible without layout changes.
Q5: What is the significance of differential output in the LMC6492 series?
A: The LMC6492AEMX/NOPB and related LMC6492 variants provide differential and rail-to-rail output capability, compared to rail-to-rail only for the TS912BIDT. Differential output allows for balanced signal transmission and improved noise immunity in certain applications. However, this feature does not affect basic compatibility for single-ended applications. The differential output capability is an enhancement that does not restrict use in standard rail-to-rail applications.
Q6: Can the TS912BIDT be substituted with parts having lower minimum supply voltage?
A: The TS912BIDT operates from 2.7V minimum supply voltage. The LMC6492AEMX/NOPB operates from 2.5V, providing slightly lower minimum voltage operation. The ADA4665-2ARZ-R7 and LMC6482AIMX/NOPB require 5V and 3V minimum respectively. For applications operating below 3V, only the TS912BIDT and LMC6492AEMX/NOPB are suitable. Verify actual circuit supply voltage requirements before selecting a substitute part.
Q7: What packaging options are available for substitute parts?
A: The TS912BIDT is supplied in Cut Tape (CT) & Digi-Reel® packaging. Substitute parts are available in multiple packaging formats: ADA4665-2ARZ-R7 (Cut Tape & Digi-Reel®), ADA4665-2ARZ (Tube), LMC6482AIMX/NOPB (Cut Tape & Digi-Reel®), and LMC6492AEMX/NOPB (Tape & Reel). Assembly process requirements determine the appropriate packaging selection. Reel-based packaging (Cut Tape & Digi-Reel® or Tape & Reel) is standard for automated pick-and-place assembly. Tube packaging is suitable for manual assembly or lower-volume production.
Q8: Are all substitute parts RoHS3 compliant?
A: All substitute parts listed in this reference are ROHS3 compliant, matching the TS912BIDT compliance status. All devices have MSL Level 1 (Unlimited) moisture sensitivity rating. Environmental and regulatory compliance is equivalent across all recommended substitute parts.
Q9: Which substitute part offers the best overall performance improvement?
A: The LMC6482AIMX/NOPB provides the most significant performance improvements in input offset voltage (110 µV vs. 2 mV) and input bias current (0.02 pA vs. 1 pA). However, this device is limited to -40°C to 85°C operating range and requires 3V minimum supply voltage. For applications not requiring the full -40°C to 125°C range, the LMC6482AIMX/NOPB is the optimal choice. For applications requiring the full temperature range with performance enhancement, the LMC6492AEMX/NOPB provides superior specifications while maintaining -40°C to 125°C operation, with the trade-off of increased supply current consumption.
Q10: What is the recommended substitution priority order?
A: Priority order for substitution is: (1) ADA4665-2ARZ-R7 for general-purpose replacement with minimal design changes; (2) LMC6492AEMX/NOPB for applications requiring enhanced precision and full temperature range; (3) LMC6482AIMX/NOPB for applications where -40°C to 85°C range is acceptable and maximum precision is required; (4) ADA4665-2ARZ for identical electrical performance to ADA4665-2ARZ-R7 with different packaging; (5) BD7542F-E2 only for low-speed, low-current applications where performance reduction is acceptable and PCB layout modification is feasible.
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