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LT1167CS8 Equivalent & Substitute Parts
Part Overview
The LT1167CS8 is an instrumentation amplifier manufactured by Analog Devices Inc., designed for single-circuit applications in 8-SOIC surface mount packaging. This linear amplifier device is classified as Active product status and is ROHS3 compliant. The LT1167CS8 operates across a wide supply voltage range of 4.6 V to 36 V with an operating temperature range of 0°C to 70°C. Equivalent and substitute parts are identified when they maintain compatible electrical characteristics, identical packaging specifications, and equivalent functional performance within the instrumentation amplifier category.
Substiute Parts
Key Parameters
| Parameter | LT1167CS8 | Unit |
|---|---|---|
| Amplifier Type | Instrumentation | — |
| Number of Circuits | 1 | — |
| Slew Rate | 1.2 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 80 | pA |
| Voltage - Input Offset | 20 | µV |
| Current - Supply | 900 | µA |
| Current - Output / Channel | 27 | mA |
| Voltage - Supply Span (Min) | 4.6 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | 0 to 70 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LT1167CS8 are identified based on the following critical parameters that determine functional compatibility:
Primary Substitution Criteria:
- Amplifier Type: Instrumentation
- Number of Circuits: 1
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Voltage - Supply Span: Minimum 4.6 V, Maximum 36 V
- RoHS Status: ROHS3 Compliant
Secondary Performance Parameters:
- Slew Rate: 1.2 V/µs or greater
- Gain Bandwidth Product: 1 MHz or greater
- Current - Input Bias: 80 pA or lower
- Voltage - Input Offset: 20 µV or lower
- Current - Supply: 900 µA or lower
- Current - Output / Channel: 27 mA or greater
Substitute parts are grouped into two categories: Direct equivalents (identical packaging and specifications) and similar alternatives (compatible electrical performance with potential variations in secondary parameters).
Parameter Comparison
| Part Number | Manufacturer | Slew Rate (V/µs) | Gain Bandwidth Product (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LT1167CS8 | Analog Devices | 1.2 | 1 | 80 | 20 | 900 | 27 | 4.6 | 36 | 0 to 70 | 8-SOIC |
| LT1167CS8#PBF | Analog Devices | 1.2 | 1 | 80 | 20 | 900 | — | 4.6 | 36 | 0 to 70 | 8-SOIC |
| AD621ARZ | Analog Devices | 1.2 | 0.8 | 500 | 75 | 900 | 18 | 4.6 | 36 | -40 to 85 | 8-SOIC |
| INA118UB | Texas Instruments | 0.9 | 0.8 | 1000 | 10 | 350 | 12 | 2.7 | 36 | -40 to 85 | 8-SOIC |
| INA118UB/2K5 | Texas Instruments | 0.9 | 0.8 | 1000 | 10 | 350 | 12 | 2.7 | 36 | -40 to 85 | 8-SOIC |
| INA121U | Texas Instruments | 0.7 | 0.005 | 4 | 200 | 450 | 14 | 4.5 | 36 | -40 to 85 | 8-SOIC |
| INA128HD | Texas Instruments | 4 | 1.3 | 2000 | 25 | 700 | 15 | 4.5 | 36 | -55 to 175 | 8-SOIC |
| INA128U | Texas Instruments | 4 | 1.3 | 2000 | 10 | 700 | 15 | 4.5 | 36 | -40 to 85 | 8-SOIC |
| INA128U/2K5 | Texas Instruments | 4 | 1.3 | 2000 | 10 | 700 | 15 | 4.5 | 36 | -40 to 85 | 8-SOIC |
| INA128UA | Texas Instruments | 4 | 1.3 | 2000 | 25 | 700 | 15 | 4.5 | 36 | -40 to 125 | 8-SOIC |
| INA128UA/2K5 | Texas Instruments | 4 | 1.3 | 2000 | 25 | 700 | 15 | 4.5 | 36 | -40 to 125 | 8-SOIC |
Engineering Selection Recommendations
Direct Equivalent: LT1167CS8#PBF is the direct equivalent of LT1167CS8, differing only in packaging format (Tube). Both parts maintain identical electrical specifications and are ROHS3 compliant with MSL 1 rating. Selection between these two depends on procurement and assembly requirements.
Compatible Substitutes with Maintained Supply Range: Parts maintaining the 4.6 V minimum supply voltage and 36 V maximum supply voltage include AD621ARZ and INA118UB/INA118UB/2K5. These devices operate within the same supply envelope as the LT1167CS8 and are ROHS3 compliant. AD621ARZ extends the operating temperature range to -40°C to 85°C. INA118UB variants operate at lower minimum supply voltage (2.7 V) and reduced supply current (350 µA).
Extended Temperature Range Alternatives: INA128 series devices (INA128HD, INA128U, INA128U/2K5, INA128UA, INA128UA/2K5) provide extended operating temperature ranges up to 125°C or 175°C. These parts maintain 4.5 V minimum supply voltage and 36 V maximum supply voltage, with higher slew rates (4 V/µs) and greater gain bandwidth product (1.3 MHz). All are ROHS3 compliant.
Low Bandwidth Specialized Application: INA121U is suitable for applications requiring lower bandwidth (5 kHz) with minimal input bias current (4 pA). This part operates within the 4.5 V to 36 V supply range and is ROHS3 compliant.
All substitute parts listed maintain Active product status and ROHS3 compliance, ensuring regulatory and supply chain continuity.
Frequently Asked Questions (FAQ)
Q: Can LT1167CS8#PBF be used as a direct replacement for LT1167CS8? A: Yes. LT1167CS8#PBF is electrically identical to LT1167CS8. The difference is packaging format: LT1167CS8#PBF is supplied in Tube packaging while LT1167CS8 is supplied in standard packaging. Both maintain identical electrical specifications and compliance ratings.
Q: What is the primary difference between LT1167CS8 and INA118UB? A: The primary differences are slew rate (1.2 V/µs vs. 0.9 V/µs), input bias current (80 pA vs. 1 nA), and minimum supply voltage (4.6 V vs. 2.7 V). INA118UB operates at lower supply current (350 µA vs. 900 µA) and provides extended temperature range (-40°C to 85°C vs. 0°C to 70°C).
Q: Are all substitute parts available in 8-SOIC packaging? A: Yes. All substitute parts listed are available in 8-SOIC (0.154", 3.90mm Width) surface mount packaging, maintaining mechanical compatibility with LT1167CS8.
Q: Which substitute part offers the highest slew rate? A: INA128 series devices (INA128HD, INA128U, INA128U/2K5, INA128UA, INA128UA/2K5) offer the highest slew rate at 4 V/µs, compared to 1.2 V/µs for LT1167CS8.
Q: Can INA121U be used in applications requiring 1 MHz bandwidth? A: No. INA121U has a -3dB bandwidth of 5 kHz, which is significantly lower than LT1167CS8 (1 MHz gain bandwidth product). INA121U is suitable only for low-bandwidth applications.
Q: What is the moisture sensitivity level (MSL) difference between LT1167CS8 and substitute parts? A: LT1167CS8 has MSL 1 (Unlimited), indicating no moisture sensitivity constraints. Most substitute parts have MSL 3 (168 Hours), requiring controlled storage and handling. INA118UB/2K5 has MSL 2 (1 Year), providing intermediate moisture sensitivity protection.
Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed are ROHS3 compliant, maintaining regulatory compliance equivalent to LT1167CS8.
Q: Which substitute part has the lowest input offset voltage? A: INA118UB and INA118UB/2K5 have the lowest input offset voltage at 10 µV, compared to 20 µV for LT1167CS8.
Q: Can substitute parts operate at the same 4.6 V minimum supply voltage as LT1167CS8? A: AD621ARZ operates at 4.6 V minimum. INA118UB/2K5 operates at 2.7 V minimum (lower). INA121U, INA128 series operate at 4.5 V minimum, which is 0.1 V lower than LT1167CS8.
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