OPA4170-Q1 - Quad 36V 1.2MHz Low-Power Op Amp | TI Automotive
部品番号: OPA4170AQPWRQ1 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 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 概要
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.
ドロップイン代替品: OPA4170AQPWRQ1 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: OPA4170AQPWRQ1 （同一形状・フットプリント） — 相違点: Supply Voltage Range.
クイック比較ツール — 並列比較する代替部品を選択:
OPA4170AIPWR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LMV344QIPWRQ1
⚡ 同一パッケージ✓ 在庫あり
$0.36 / 個
データシートを見る →SGM8270-4XS14G/TR
⚡ 同一パッケージ📋 参考代替品（カタログ未掲載）
TLV2374IPWR
⚡ 同一パッケージ ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
OPA4170AQPWRQ1 最大定格＆電気的特性
| チャネル数 | 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 |
| 動作温度 | -40C to +125C |
| パッケージ | 14-TSSOP (PW) |
| 実装タイプ | Surface Mount |
| Qualification | AEC-Q100 Qualified (Automotive Grade) |
| RoHS ステータス | Compliant |
| カテゴリ | Standard (General Purpose) Amplifier |
OPA4170AQPWRQ1 ピン構成
| ピン 1 | OUT1 — Channel 1 output |
| ピン 2 | IN1- — Channel 1 inverting input |
| ピン 3 | IN1+ — Channel 1 non-inverting input |
| ピン 4 | V+ — Positive supply (2.7 V to 36 V) |
| ピン 5 | IN2+ — Channel 2 non-inverting input |
| ピン 6 | IN2- — Channel 2 inverting input |
| ピン 7 | OUT2 — Channel 2 output |
| ピン 8 | OUT3 — Channel 3 output |
| ピン 9 | IN3- — Channel 3 inverting input |
| ピン 10 | IN3+ — Channel 3 non-inverting input |
| ピン 11 | V- — Negative supply or ground |
| ピン 12 | IN4+ — Channel 4 non-inverting input |
| ピン 13 | IN4- — Channel 4 inverting input |
| ピン 14 | OUT4 — Channel 4 output |
主な用途
OPA4170AQPWRQ1 の用途: 6 件s: 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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: OPA4170AQPWRQ1 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- 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)
設計ノート
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.
コンプライアンス情報
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.
