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TS1872IST Equivalent & Substitute Parts
Part Overview
The TS1872IST is a general purpose operational amplifier manufactured by STMicroelectronics, configured as a dual-channel (2 circuit) rail-to-rail amplifier in an 8-MiniSO surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The TS1872IST operates across a supply voltage range of 1.8 V to 6 V with an operating temperature range of -40°C to 125°C, suitable for low-power analog signal processing applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 0.6 | V/µs |
| Gain Bandwidth Product | 1.8 | MHz |
| Current - Input Bias | 70 | nA |
| Voltage - Input Offset | 100 | µV |
| Current - Supply (x2 Channels) | 500 | µA |
| Current - Output / Channel | 80 | mA |
| Voltage - Supply Span (Min) | 1.8 | V |
| Voltage - Supply Span (Max) | 6 | V |
| Operating Temperature | -40 to 125 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the TS1872IST is determined by the following critical parameters: dual-channel configuration (2 circuits), rail-to-rail output capability, surface mount packaging in 8-pin MSOP/VSSOP form factor, supply voltage range compatibility (minimum 1.8 V), and operating temperature range (-40°C to 125°C). Substitute parts must maintain functional equivalence in these core electrical and mechanical characteristics.
The substitute parts are grouped into two categories based on amplifier type:
General Purpose Amplifiers: LMV932MM/NOPB, LMV932MMX/NOPB, LMV552MMX/NOPB, MCP6L2T-E/MS, NCS20082DMR2G, and NCV20062DMR2G maintain the general purpose amplifier classification and are suitable for direct functional replacement in applications requiring similar gain-bandwidth and slew rate characteristics.
CMOS Amplifiers: AD8602ARMZ and OPA2314AIDGKR offer CMOS technology with enhanced performance characteristics, including lower input bias current and higher slew rates, suitable for applications requiring improved dynamic performance.
Extended Performance: OPA2350EA/2K5 and OPA2369AIDGKR represent alternative CMOS solutions with significantly different performance profiles and operating temperature ranges, applicable only to specific application requirements.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA/nA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TS1872IST | STMicroelectronics | General Purpose | 0.6 | 1.8 | 70 nA | 100 | 500 | 80 | 1.8 | 6 | -40 to 125 | 8-MiniSO | Obsolete |
| AD8602ARMZ | Analog Devices Inc. | CMOS | 6 | 8.4 | 0.2 pA | 80 | 750 | 50 | 2.7 | 5.5 | -40 to 125 | 8-MSOP | Active |
| LMV552MMX/NOPB | Texas Instruments | General Purpose | 1 | 3 | 20 nA | 1000 | 37 | 25 | 2.7 | 5.5 | -40 to 125 | 8-VSSOP | Active |
| LMV932MM/NOPB | Texas Instruments | General Purpose | 0.42 | 1.5 | 14 nA | 1000 | 116 | 100 | 1.8 | 5.5 | -40 to 125 | 8-VSSOP | Active |
| LMV932MMX/NOPB | National Semiconductor | General Purpose | 0.42 | 1.5 | 14 nA | 1000 | 116 | 100 | 1.8 | 5.5 | -40 to 125 | 8-VSSOP | Active |
| MCP6L2T-E/MS | Microchip Technology | General Purpose | 2.3 | 2.8 | 1 pA | 1000 | 200 | 20 | 2.7 | 6 | -40 to 125 | 8-MSOP | Active |
| NCS20082DMR2G | onsemi | General Purpose | 0.4 | 1.2 | 1 pA | 500 | 48 | 15 | 1.8 | 5.5 | -40 to 125 | 8-MSOP | Active |
| NCV20062DMR2G | onsemi | General Purpose | 1.2 | 3 | 1 pA | 500 | 140 | 19 | 1.8 | 5.5 | -40 to 125 | 8-MSOP | Active |
| OPA2314AIDGKR | Texas Instruments | CMOS | 1.5 | 3 | 0.2 pA | 500 | 150 | 20 | 1.8 | 5.5 | -40 to 125 | 8-VSSOP | Active |
| OPA2350EA/2K5 | Texas Instruments | CMOS | 22 | 38 | 0.5 pA | 150 | 5200 | 40 | 2.7 | 5.5 | -40 to 85 | 8-VSSOP | Active |
| OPA2369AIDGKR | Texas Instruments | General Purpose | 0.005 | 0.012 | 10 pA | 250 | 0.7 | 10 | 1.8 | 5.5 | -40 to 85 | 8-VSSOP | Active |
Engineering Selection Recommendations
Primary Substitutes (Direct Functional Replacement):
LMV932MM/NOPB and LMV932MMX/NOPB are the closest functional equivalents to the TS1872IST. Both devices maintain general purpose amplifier classification, dual-channel configuration, rail-to-rail output, and identical operating temperature range (-40°C to 125°C). The LMV932 series supports the full 1.8 V minimum supply voltage requirement and provides superior output current capability (100 mA per channel versus 80 mA). These parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
NCS20082DMR2G and NCV20062DMR2G from onsemi provide general purpose amplifier functionality with 1.8 V minimum supply voltage support and full temperature range coverage. Both are active products with ROHS3 compliance. NCV20062DMR2G offers improved slew rate (1.2 V/µs) and gain-bandwidth product (3 MHz) compared to the original TS1872IST.
Secondary Substitutes (Enhanced Performance):
AD8602ARMZ and OPA2314AIDGKR are CMOS amplifiers offering significantly lower input bias current (0.2 pA) and higher slew rates (6 V/µs and 1.5 V/µs respectively). Both support the 1.8 V minimum supply voltage and full -40°C to 125°C temperature range. These devices are suitable for applications requiring improved dynamic performance and lower input current characteristics. OPA2314AIDGKR has MSL 2 rating (1 Year), requiring controlled storage conditions.
MCP6L2T-E/MS from Microchip Technology provides general purpose amplifier functionality with extended supply voltage range (2.7 V to 6 V), matching the TS1872IST maximum supply specification. This device offers improved slew rate (2.3 V/µs) and gain-bandwidth product (2.8 MHz) with active product status and ROHS3 compliance.
Alternative Solutions (Application-Specific):
OPA2350EA/2K5 is a high-performance CMOS amplifier suitable only for applications requiring significantly enhanced bandwidth (38 MHz) and slew rate (22 V/µs). This device operates at reduced maximum temperature (85°C) and higher supply current (5.2 mA), making it unsuitable as a general replacement.
OPA2369AIDGKR is a low-power, low-bandwidth amplifier designed for ultra-low-power applications. With gain-bandwidth product of only 12 kHz and slew rate of 0.005 V/µs, this device is applicable only to specialized low-frequency signal processing applications and is not suitable for general TS1872IST replacement.
Frequently Asked Questions (FAQ)
Q: Can I directly replace TS1872IST with LMV932MM/NOPB without circuit modifications?
A: LMV932MM/NOPB is functionally compatible with TS1872IST in terms of pin configuration, dual-channel architecture, rail-to-rail output, and operating temperature range. Both devices use 8-pin MSOP/VSSOP packages with identical pinout. However, verify that your application can tolerate the differences in slew rate (0.42 V/µs versus 0.6 V/µs) and gain-bandwidth product (1.5 MHz versus 1.8 MHz). The LMV932 series provides superior output current capability (100 mA versus 80 mA per channel).
Q: What is the key difference between general purpose and CMOS amplifier substitutes?
A: General purpose amplifiers (LMV932, NCS20082, NCV20062, MCP6L2) use bipolar or JFET input stages, resulting in higher input bias current (typically 1 pA to 70 nA) but lower input offset voltage drift. CMOS amplifiers (AD8602, OPA2314) feature extremely low input bias current (0.2 pA) and are suitable for high-impedance signal sources. The TS1872IST uses a general purpose architecture with 70 nA input bias current, making general purpose substitutes more appropriate for direct replacement.
Q: Does package type affect substitution compatibility?
A: The TS1872IST is supplied in 8-MiniSO package. Substitute parts are available in 8-MSOP and 8-VSSOP packages. All three package types are 8-pin surface mount packages with 0.118" (3.00 mm) width and identical pinout. Physical board layout may require minor adjustments due to slight dimensional differences, but electrical compatibility is maintained. Verify PCB footprint compatibility before assembly.
Q: Which substitute part offers the best low-power performance?
A: NCS20082DMR2G provides the lowest supply current consumption at 48 µA (x2 channels), compared to 500 µA for the TS1872IST. This device maintains 1.8 V minimum supply voltage support and full -40°C to 125°C temperature range. For ultra-low-power applications requiring supply currents below 1 µA, OPA2369AIDGKR offers 700 nA supply current but operates at significantly reduced bandwidth (12 kHz gain-bandwidth product).
Q: Are all substitute parts ROHS3 compliant?
A: All listed substitute parts carry ROHS3 compliance certification. The TS1872IST is also ROHS3 compliant. All parts are REACH unaffected and classified under ECCN EAR99 with HTSUS code 8542.33.0001.
Q: What is the moisture sensitivity level (MSL) difference between substitutes?
A: The TS1872IST has MSL 1 (unlimited shelf life without moisture control). Most substitute parts (AD8602ARMZ, LMV932 series, MCP6L2T-E/MS, NCS20082DMR2G, NCV20062DMR2G) also have MSL 1 rating. OPA2314AIDGKR and OPA2350EA/2K5 have MSL 2 rating (1 Year), requiring controlled storage at specified humidity levels and bake-out procedures before reflow soldering.
Q: Can I use OPA2350EA/2K5 as a direct replacement for TS1872IST?
A: OPA2350EA/2K5 is not recommended as a direct replacement. While it provides dual-channel rail-to-rail amplification in an 8-pin package, it operates at reduced maximum temperature (85°C versus 125°C), significantly higher supply current (5.2 mA versus 500 µA), and substantially higher gain-bandwidth product (38 MHz versus 1.8 MHz). Use this device only in applications specifically requiring high-bandwidth performance and operating within the 85°C maximum temperature limit.
Q: Which substitute offers the best balance of performance and power consumption?
A: NCV20062DMR2G provides balanced performance with 1.2 V/µs slew rate, 3 MHz gain-bandwidth product, and 140 µA supply current. This device maintains 1.8 V minimum supply voltage, full -40°C to 125°C temperature range, and active product status. It offers improved dynamic performance over the TS1872IST while maintaining reasonable power consumption for general purpose applications.
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