OPA4170-Q1 - Quad 36V 1.2MHz Low-Power Op Amp | TI Automotive
MPN: OPA4170-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.89 | $18.90 |
| 100 | $1.55 | $155.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.15 | $1,150.00 |
Drop-in alternatives for OPA4170-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
OPA4170AIPWR
β Drop-Inπ Reference alternative (not in catalog)
TLV2374AIPWR
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LM324QT
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View Datasheet βMCP6004-I/PT
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SGM8270-4
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OPA4170-Q1 Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Supply Voltage Range | 2.7 V to 36 V (Β±1.35 V to Β±18 V) |
| Gain-Bandwidth Product | 1.2 MHz |
| Quiescent Current (per amplifier) | 475 uA |
| Input Offset Voltage (max) | 500 uV |
| Input Bias Current (max) | 15 pA |
| CMRR | 120 dB |
| Input/Output Type | Rail-to-Rail Input and Output |
| Slew Rate | [DATA_NEEDED: slew rate] |
| Capacitive Load Stability | 300 pF |
| Operating Temperature Range | -40C to +125C |
| Package | 14-TSSOP (PW) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified |
| RoHS Status | Compliant |
OPA4170-Q1 Pin Configuration
| Pin 1 | OUT1 β Amplifier 1 output |
| Pin 2 | -IN1 β Amplifier 1 inverting input |
| Pin 3 | +IN1 β Amplifier 1 non-inverting input |
| Pin 4 | V+ β Positive supply |
| Pin 5 | +IN2 β Amplifier 2 non-inverting input |
| Pin 6 | -IN2 β Amplifier 2 inverting input |
| Pin 7 | OUT2 β Amplifier 2 output |
| Pin 8 | OUT3 β Amplifier 3 output |
| Pin 9 | -IN3 β Amplifier 3 inverting input |
| Pin 10 | +IN3 β Amplifier 3 non-inverting input |
| Pin 11 | V- β Negative supply or ground |
| Pin 12 | +IN4 β Amplifier 4 non-inverting input |
| Pin 13 | -IN4 β Amplifier 4 inverting input |
| Pin 14 | OUT4 β Amplifier 4 output |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
OPA4170-Q1 is suitable for 6 applications: Automotive Battery Management Systems, Motor Control Current Sensing, Automotive Sensor Signal Conditioning, Analog Signal Filtering and Buffering, Automotive Gateway and Body Electronics, Precision Instrumentation Front Ends.
Automotive Battery Management Systems
The OPA4170-Q1 fits BMS cell-voltage monitoring because its 36-V supply rating tolerates stacked-cell rails and automotive transients, while 500 uV max offset and 15 pA max bias current preserve measurement accuracy in high-impedance sense networks. In typical BMS front ends, the quad device buffers multiple cell-tap signals or amplifies shunt voltages ahead of an ADC such as the BQ79616-Q1. Rail-to-rail I/O maximizes dynamic range from a single 3.3-V or 5-V logic-side supply. The AEC-Q100 qualification ensures reliability under -40C to +125C conditions.
Recommended
Motor Control Current Sensing
For motor control, the OPA4170-Q1 conditions phase-current and shunt signals for feedback loops. Its rail-to-rail output uses the full input span of ADCs on MCUs such as the TMS320F2800153-Q1, improving current-loop resolution. The 1.2 MHz gain-bandwidth is sufficient for low-side shunt amplification at typical PWM carrier frequencies, and 120 dB CMRR suppresses common-mode noise from switching legs. The 36-V rating survives 12-V/24-V rail excursions, and one TSSOP-14 quad packages three-phase amplification in a single device.
Recommended
Automotive Sensor Signal Conditioning
The OPA4170-Q1 amplifies and filters low-level outputs from pressure, position, and temperature sensors in automotive modules. Its 15 pA max bias current minimizes error with high-impedance sensor elements, and rail-to-rail input allows sensors referencing ground to be handled directly. Four channels in one 475 uA-per-channel package suit always-on modules where power budget is tight. The device's 300 pF capacitive-load stability eases driving long wiring harnesses and RC anti-alias filters feeding ADCs such as the ADS7067.
Recommended
Analog Signal Filtering and Buffering
With rail-to-rail output and 300 pF capacitive-load stability, the OPA4170-Q1 implements Sallen-Key and multiple-feedback active filters without external buffering. The 1.2 MHz GBW supports low-frequency anti-aliasing filters with adequate loop gain for low distortion, and the CMOS input's picoampere bias permits large-value resistors (megaohm class) for compact RC time constants. Each of the four independent channels can implement one filter stage, enabling fourth-order filters in a single TSSOP-14 footprint on 2.7 V to 36 V supplies.
Recommended
Automotive Gateway and Body Electronics
In body-control and gateway modules, the OPA4170-Q1 conditions analog diagnostics such as lamp-current feedback, switch monitoring, and supply-rail supervision. The 36-V supply rating directly withstands jump-start and load-dump clamped conditions on 12-V rails, while low 475 uA-per-channel quiescent current keeps always-on standby loads minimal for cold-crank and key-off compliance. Its quad integration reduces BOM count versus four single op amps, and AEC-Q100 qualification covers the -40C to +125C ambient range typical of underhood and interior modules.
Recommended
Precision Instrumentation Front Ends
The OPA4170-Q1's 500 uV max offset, 15 pA bias current, and 120 dB CMRR make it suitable for industrial instrumentation front ends amplifying bridge and thermocouple signals. Rail-to-rail I/O enables single-supply operation from 5 V while preserving measurement span, and the quad configuration lets one device serve signal amplification, reference buffering, and gain staging. Pair with precision ADCs such as the ADS1262 and low-drift references; for the highest precision, consider the PGA281 programmable gain amplifier upstream of this buffer stage.
Recommended
Recommended Products Summary
Engineering reference data for OPA4170-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OPA4170AIPWR | TLV2374AIPWR | MCP6004-I/PT |
|---|---|---|---|---|
| Package | 14-TSSOP (PW) | 14-TSSOP (PW) - same | 14-TSSOP (PW) - same | 14-TSSOP - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Channels | 4 | 4 | 4 | 4 |
| Supply Voltage Range | 2.7 V to 36 V | 2.7 V to 36 V | 2.7 V to 16 V | 1.8 V to 5.5 V |
| Gain-Bandwidth | 1.2 MHz | 1.2 MHz | 3 MHz | 1 MHz |
| Input Offset Voltage (max) | 500 uV | 500 uV | 6 mV | 4.5 mV |
| Automotive Grade (AEC-Q100) | Yes | No (standard grade) | No | No |
| Quiescent Current per Channel | 475 uA | 475 uA | 665 uA | 100 uA |
Key Differentiators
- AEC-Q100 automotive qualification (vs OPA4170AIPWR)
- Higher precision offset than quad competitors (vs TLV2374AIPWR)
- Wide 36-V supply tolerance (vs MCP6004-I/PT)
Design Notes
Decouple the V+ pin with a 0.1 uF ceramic capacitor placed within 2 mm of pin 4, plus a 1 uF bulk capacitor nearby. For dual-supply use, also decouple V- at pin 11. Keep input traces short and guard high-impedance nodes to ground to exploit the 15 pA max bias current; leakage through contaminated FR4 can exceed input bias current by orders of magnitude if traces are not guarded or cleaned.
The device is stable with up to 300 pF capacitive load, but heavier loads or large capacitive feedback paths require an isolation resistor (typically 10-50 ohm) at the output. In single-supply designs, the rail-to-rail input stage exhibits a small common-mode crossover transition near mid-supply; for highest precision, bias inputs away from the transition region or use inverting topologies where possible.
Although the supply rating is 36 V, the absolute maximum input voltage equals the supply rails - never exceed V+ + 0.3 V on inputs during load dump or reverse-battery events; add external clamps if needed. Do not rely on the device to self-limit output current; short-circuit duration limits apply. In automotive designs, always verify the specific AEC-Q1 grade of the OPA4170AQPWRQ1 ordering code against your temperature profile.
Compliance Information
AEC-Q100 qualified automotive grade per TI product page. RoHS compliant and lead-free per standard TI automotive packaging.
