OPA4170-Q1 - Quad 36V 1.2MHz Low-Power Op Amp | TI Automotive
Teilenummer: OPA4170AQPWRQ1 ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 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 |
OPA4170AQPWRQ1 Übersicht
An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, and is a fundamental building block of analog electronics used in signal conditioning, filtering, and amplification. Op amps sit within the hierarchy of linear integrated circuits, alongside comparators, voltage regulators, and references. The OPA4170-Q1 belongs to the value-line precision op amp family, offering low offset voltage and drift for accurate signal processing, and complements the single OPA170-Q1 and dual OPA2170-Q1 family members, which share identical per-channel specifications for maximum design flexibility.
Key features include a low input offset voltage of 500 uV (max), low input bias current of 15 pA (max), and high common-mode rejection ratio (CMRR) of 120 dB. The wide supply range suits automotive battery-powered systems connected directly to 12-V and 24-V rails, while rail-to-rail input/output (RRIRO) maximizes dynamic range in single-supply designs - critical for sensor interfaces and motor control loops.
Technically, the OPA4170-Q1 uses a CMOS input stage contributing to picoampere bias current and high input impedance. The rail-to-rail output stage swings close to the supply rails, and the device is stable with capacitive loads up to 300 pF, simplifying buffer designs. Internal ESD protection enhances robustness in harsh automotive environments.
Typical applications include automotive battery management systems, motor control current sensing, and sensor signal conditioning, where its low power suits always-on modules.
Design tip: decouple supply pins with 0.1 uF ceramic capacitors placed close to the device, and verify the input common-mode range in single-supply designs.
Drop-in-Alternativen für OPA4170AQPWRQ1 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit OPA4170AQPWRQ1 (gleiche Bauform und Footprint) – abweichend in Supply Voltage Range.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
OPA4170AIPWR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LMV344QIPWRQ1
⚡ Gleiches Gehäuse✓ Auf Lager
$0.36 / Stück
Datenblatt ansehen →SGM8270-4XS14G/TR
⚡ Gleiches Gehäuse📋 Referenzalternative (nicht im Katalog)
TLV2374IPWR
⚡ Gleiches Gehäuse ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
OPA4170AQPWRQ1 Grenzwerte & elektrische Eigenschaften
| Kanäle | 4 (Quad) |
| Supply Voltage Range | 2.7 V (±1.35 V) to 36 V (±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 |
| Betriebstemperatur | -40C to +125C |
| Gehäuse | 14-TSSOP (PW) |
| Montageart | Surface Mount |
| Qualification | AEC-Q100 Qualified (Automotive Grade) |
| RoHS-Status | Compliant |
| Kategorie | Standard (General Purpose) Amplifier |
OPA4170AQPWRQ1 Pin-Konfiguration
| Pin 1 | OUT1 — Channel 1 output |
| Pin 2 | IN1- — Channel 1 inverting input |
| Pin 3 | IN1+ — Channel 1 non-inverting input |
| Pin 4 | V+ — Positive supply (2.7 V to 36 V) |
| Pin 5 | IN2+ — Channel 2 non-inverting input |
| Pin 6 | IN2- — Channel 2 inverting input |
| Pin 7 | OUT2 — Channel 2 output |
| Pin 8 | OUT3 — Channel 3 output |
| Pin 9 | IN3- — Channel 3 inverting input |
| Pin 10 | IN3+ — Channel 3 non-inverting input |
| Pin 11 | V- — Negative supply or ground |
| Pin 12 | IN4+ — Channel 4 non-inverting input |
| Pin 13 | IN4- — Channel 4 inverting input |
| Pin 14 | OUT4 — Channel 4 output |
Typische Anwendungen
OPA4170AQPWRQ1 ist geeignet für 6 Anwendungs: 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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
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.
Empfohlen
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.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für OPA4170AQPWRQ1 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | 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 |
| AEC-Q100 | Qualified | Not qualified | Qualified (Q1) | Not equivalent | Not qualified |
| Rail-to-Rail I/O | Yes | Yes | Yes | Yes | Yes |
Wichtigste Unterscheidungsmerkmale
- 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)
Designhinweise
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-Informationen
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.
