OPA4170-Q1 - Quad 36V 1.2MHz Low-Power Op Amp | TI Automotive
MPN: OPA4170AQPWRQ1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.98 | $1.98 |
| 10 | $1.78 | $17.80 |
| 100 | $1.45 | $145.00 |
| 500 | $1.19 | $595.00 |
| 1,000 | $0.98 | $980.00 |
Drop-in alternatives for OPA4170AQPWRQ1 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)
LMV344QIPWRQ1
β‘ Same Packageβ In Stock
$0.36 / Unit
View Datasheet βSGM8270-4XS14G/TR
β‘ Same Packageπ Reference alternative (not in catalog)
TLV2374IPWR
β‘ Same Packageπ Reference alternative (not in catalog)
OPA4170AQPWRQ1 Maximum Ratings & Electrical Characteristics
| Channels | 4 (Quad) |
| Supply Voltage Range | 2.7 V (Β±1.35 V) to 36 V (Β±18 V) |
| Gain-Bandwidth Product | 1.2 MHz |
| Quiescent Current Per Channel | 475 uA |
| Input Offset Voltage | 500 uV (max) |
| Input Bias Current | 15 pA (max) |
| CMRR | 120 dB |
| Input/Output Type | Rail-to-Rail Input and Output (RRIRO) |
| Capacitive Load Stability | 300 pF |
| Operating Temperature | -40C to +125C |
| Package | 14-TSSOP (PW) |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q100 Qualified (Automotive Grade) |
| RoHS Status | Compliant |
| Category | Standard (General Purpose) Amplifier |
OPA4170AQPWRQ1 Pin Configuration
| Pin 1 | OUT1 β Channel 1 output |
| Pin 2 | IN1- β Channel 1 inverting input |
| Pin 3 | IN1+ β Channel 1 non-inverting input |
| Pin 4 | V+ β Positive supply (2.7 V to 36 V) |
| Pin 5 | IN2+ β Channel 2 non-inverting input |
| Pin 6 | IN2- β Channel 2 inverting input |
| Pin 7 | OUT2 β Channel 2 output |
| Pin 8 | OUT3 β Channel 3 output |
| Pin 9 | IN3- β Channel 3 inverting input |
| Pin 10 | IN3+ β Channel 3 non-inverting input |
| Pin 11 | V- β Negative supply or ground |
| Pin 12 | IN4+ β Channel 4 non-inverting input |
| Pin 13 | IN4- β Channel 4 inverting input |
| Pin 14 | OUT4 β Channel 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
OPA4170AQPWRQ1 is suitable for 6 applications: Automotive Battery Management Systems, Motor Control Current Sensing, Sensor Signal Conditioning, Automotive Voltage Monitoring and Supervision, Audio Signal Chains in Vehicles, Industrial 24V PLC and Instrumentation I/O.
Automotive Battery Management Systems
The OPA4170-Q1's 36-V supply tolerance covers stacked lithium-ion cell domains, and its AEC-Q100 qualification meets automotive requirements directly. Four channels allow simultaneous buffering of multiple cell-voltage sense lines, while the 475-uA per-channel quiescent current keeps always-on monitoring load low for 12-V standby budgets. Placed between cell-tap resistor dividers and an ADC or monitor such as the BQ76952-Q1, the RRIRO output swings close to the low-side rail, maximizing usable conversion range at low cell voltages. Decouple each V+ pin with 0.1 uF ceramics placed within 2 mm of the device.
Recommended
Motor Control Current Sensing
In 12-V and 24-V automotive motor drives, the OPA4170-Q1 amplifies shunt-resistor voltages with its 500-uV max offset preserving accuracy at small shunt values, reducing shunt power loss. Rail-to-rail input accommodates sensing near either supply rail, and 1.2-MHz bandwidth supports control loop speeds for typical FOC stages on MCUs such as the TMS320F28003x-Q1 family. The 300-pF capacitive load stability eases filtering near the ADC input. Because DC-link transients can exceed 36 V, add series resistance and clamp protection on inputs near the inverter power stage.
Recommended
Sensor Signal Conditioning
The 15-pA max input bias current and high CMOS-input impedance make the OPA4170-Q1 ideal for high-impedance sensors such as piezoelectric, pH, or capacitive elements, where bias-current-induced error must be minimized. The 120-dB CMRR rejects automotive ground bounce, and the wide 2.7-V to 36-V supply range lets one device serve sensors referenced to either battery or regulated rails. Configure two channels as gain stages and two as Sallen-Key anti-aliasing filters ahead of a precision ADC; RRIRO on a 3.3-V rail preserves full-scale dynamic range for small sensor outputs.
Recommended
Automotive Voltage Monitoring and Supervision
Configured as rail-to-rail comparators or window monitors, the OPA4170-Q1 supervises 12-V battery rails, 5-V and 3.3-V logic domains, and charge-pump outputs. Its 36-V absolute maximum tolerates load-dump-adjacent conditions that destroy 5.5-V amplifiers, and operation from the monitored rail itself eliminates a dedicated supply. Quad integration supervises four rails in one TSSOP-14 footprint, cutting BOM count versus discrete comparators. Pair with a reference such as REF3030AIDBZR-Q1 to set thresholds, and exploit the 475-uA per-channel draw for always-on key-off monitoring under 2 mA total.
Recommended
Audio Signal Chains in Vehicles
For low-frequency audio buffering and filtering in telematics, e-call, and warning-tone systems, the OPA4170-Q1 operates from single 12-V rails with rail-to-rail output driving line-level stages, while 475-uA per channel suits always-listening standby paths. Its 1.2-MHz bandwidth comfortably covers 20-Hz to 20-kHz audio with margin for active filter Q. Four channels implement a complete two-way active crossover (two input buffers, two filter stages) in one package. Note that this is a value-line amplifier - for high-fidelity head-unit paths, consider dedicated audio amplifiers like the OPA2134-Q1 with lower distortion.
Recommended
Industrial 24V PLC and Instrumentation I/O
Although Q1-qualified, the OPA4170-Q1 also serves industrial 24-V control panels: its 36-V rating tolerates unregulated 24-V supplies, and four channels per package densely implement analog input scaling, current-loop sensing, and output buffering on PLC I/O cards. The 500-uV max offset supports 12-bit-accurate scaling across the 0-10-V industrial range, and RRIRO preserves resolution near rails. Set channel gains with 1%-tolerance resistor networks, add 100-ohm series resistors plus clamp diodes on field-wiring inputs for transients, and use the 300-pF load stability to drive long cable capacitance through RC isolation networks.
Recommended
Recommended Products Summary
Engineering reference data for OPA4170AQPWRQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OPA4170AIPWR | LMV344QIPWRQ1 | SGM8270-4XS14G/TR | TLV2374IPWR |
|---|---|---|---|---|---|
| Package | 14-TSSOP (PW) | 14-TSSOP (PW) - same | 14-TSSOP (PW) - same | 14-TSSOP - same | 14-TSSOP (PW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | SGMicro | Texas Instruments |
| Channels | 4 | 4 | 4 | 4 | 4 |
| Supply Voltage Max | 36 V | 36 V | [DATA_NEEDED: max supply - low-voltage LMV family] | [DATA_NEEDED] | 16 V |
| Gain-Bandwidth | 1.2 MHz | 1.2 MHz | [DATA_NEEDED] | [DATA_NEEDED] | 3 MHz |
| Quiescent Current (per ch) | 475 uA | 475 uA | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| AEC-Q100 | Qualified | Not qualified | Qualified (Q1) | Not equivalent | Not qualified |
| Rail-to-Rail I/O | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- AEC-Q100 automotive qualification (vs OPA4170AIPWR)
- 36-V supply tolerance for battery-direct designs (vs LMV344QIPWRQ1)
- Lower power than 3-MHz PW-footprint quads (vs TLV2374IPWR)
Design Notes
Place 0.1-uF ceramic decoupling capacitors within 2 mm of pin 4 (V+) and pin 11 (V-), with a 2.2-uF bulk capacitor nearby. For quad-channel layouts, keep input traces short and guard high-impedance IN+ nodes with ground ring to exploit the 15-pA bias current. The TSSOP thermal pad is absent, so thermal dissipation relies on package leads; total package dissipation at 36 V and 1.9 mA quiescent remains under 70 mV-class levels and is rarely limiting.
Do not exceed the 36-V absolute maximum supply - automotive load dump can exceed this, so use TVS clamping on battery-fed rails. Verify input common-mode range in single-supply designs; although inputs are rail-to-rail, phase reversal behavior at the extremes should be checked in the datasheet. In multiple-amplifier boards, remember the OPA4170-Q1 and non-Q1 differ in IB and Ios specification limits per TI E2E forum clarification.
The device is stable with up to 300-pF capacitive load; for longer cable or ADC-driver applications, insert a small series isolation resistor (10-50 ohm) to preserve phase margin. Keep feedback resistors in the 1-100 kohm range to balance bias-current error and stray-capacitance bandwidth loss at the 1.2-MHz GBW. Unused channels should be configured as unity-gain followers with inputs tied to mid-supply to prevent oscillation.
Compliance Information
AEC-Q100 qualified automotive-grade device (OPA4170AQPWRQ1) per TI product page. RoHS compliance standard for current TI production; other fields not stated in provided data.
