LMV344QIPWRQ1 - Quad 1MHz Rail-to-Rail Op-Amp | TI Automotive
料号： LMV344QIPWRQ1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.72 | $0.72 |
| 10 | $0.65 | $6.50 |
| 100 | $0.52 | $52.00 |
| 500 | $0.44 | $220.00 |
| 1,000 | $0.36 | $360.00 |
LMV344QIPWRQ1 概述
An operational amplifier is a high-gain DC-coupled voltage amplifier that, with external feedback networks, performs signal amplification, buffering, filtering, and comparison functions. Within the power-management hierarchy, the LMV344 belongs to the general-purpose low-voltage op-amp family (LMV341/LMV342/LMV344 single/dual/quad), itself a subset of CMOS amplifiers within the broader analog signal-chain category.
Key features include rail-to-rail output swing, which maximizes dynamic range on low-voltage 3.3 V and 5 V rails; 75 mA output current capability, roughly 10x a general-purpose op amp, enabling direct driving of low-impedance loads such as ADC inputs, capacitive loads through isolation resistors, and transmission lines; and operation up to 125C ambient, supporting under-hood and body-electronics environments. The quad configuration saves board space and BOM cost versus four single-channel devices.
The CMOS input architecture provides low input bias current and low quiescent power, while the rail-to-rail output stage minimizes headroom losses near the supply rails. The -Q1 suffix denotes AEC-Q100 qualification and PPAP support for automotive production, distinguishing it from the commercial LMV344.
Typical applications include automotive sensor signal conditioning, battery-current and voltage monitoring front ends, driving ADCs in body-control modules, LED indicator drivers, and audio buffers in instrument clusters. The 75 mA drive also suits speaker or actuator buffer duties at low frequencies.
Design tip: with 75 mA drive capability, verify power dissipation in the small TSSOP-14 package when sourcing high current continuously, and add an isolation resistor (10-50 ohm) when driving large capacitive loads to preserve phase margin. Pricing references are as of 2026-08-29.
直接替换替代料： LMV344QIPWRQ1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LMV344QIPWRQ1 （相同外形与封装尺寸） ——差异在于 Output Type, Supply Voltage Range.
快速对比工具——选择替代料号进行并排对比：
LMV344IPWRQ1
✅ 直接替换📋 参考替代料（不在目录中）
LMV344IPWR
✅ 直接替换✓ 有现货
$0.45 / 个
查看数据手册 →MC33204DR2
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TS924IQ2T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LMV344QIPWRQ1 最大额定值与电气特性
| Number of Channels | 4 (Quad) |
| Gain-Bandwidth Product | 1 MHz |
| Output Current | 75 mA (high output current) |
| Supply Voltage Range | 2.7 V to 5.5 V |
| 输出类型 | Rail-to-Rail Output |
| Amplifier Type | CMOS Operational Amplifier |
| Automotive Qualification | AEC-Q100 (Q1) |
| 工作温度 | -40C to +125C |
| 封装 | 14-TSSOP (PW) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
LMV344QIPWRQ1 引脚配置
| 引脚 1 | OUT1 — Amplifier 1 output (rail-to-rail) |
| 引脚 2 | -IN1 — Amplifier 1 inverting input |
| 引脚 3 | +IN1 — Amplifier 1 non-inverting input |
| 引脚 4 | V+ — Positive supply, 2.7 V to 5.5 V |
| 引脚 5 | +IN2 — Amplifier 2 non-inverting input |
| 引脚 6 | -IN2 — Amplifier 2 inverting input |
| 引脚 7 | OUT2 — Amplifier 2 output |
| 引脚 8 | OUT3 — Amplifier 3 output |
| 引脚 9 | -IN3 — Amplifier 3 inverting input |
| 引脚 10 | +IN3 — Amplifier 3 non-inverting input |
| 引脚 11 | GND — Ground / negative rail |
| 引脚 12 | +IN4 — Amplifier 4 non-inverting input |
| 引脚 13 | -IN4 — Amplifier 4 inverting input |
| 引脚 14 | OUT4 — Amplifier 4 output |
典型应用
LMV344QIPWRQ1 适用于 6 应用s: Automotive Sensor Signal Conditioning, Battery Current and Voltage Monitoring, ADC Input Buffering and Driving, LED Indicator and Backlight Drivers, Audio Buffering in Instrument Clusters, Industrial Analog Signal Chains.
Automotive Sensor Signal Conditioning
The LMV344QIPWRQ1's AEC-Q100 qualification, -40C to +125C rating, and rail-to-rail output make it a natural front end for automotive resistive and voltage-output sensors such as position, level, and pressure sensors. The 2.7 V to 5.5 V supply range matches 3.3 V and 5 V module rails, while the 75 mA output current allows it to drive ADC inputs or downstream filters directly without an extra buffer stage. Each of the four amplifiers can amplify and offset-shift one sensor channel, saving board space in body-control modules.
推荐
Battery Current and Voltage Monitoring
In 12 V battery-management front ends, the LMV344QIPWRQ1 amplifies shunt-resistor voltages and scales battery-divider voltages into ADC range. The rail-to-rail output maximizes resolution on 3.3 V rails, and the 75 mA drive capability settles large switched-capacitor ADC inputs quickly between conversions. Its AEC-Q100 qualification supports under-hood-adjacent modules, while the low-voltage CMOS input draws negligible bias current that would otherwise corrupt high-impedance shunt measurements.
推荐
ADC Input Buffering and Driving
SAR and delta-sigma ADCs present dynamic, switched-capacitor input loads that demand amplifiers with strong drive and fast settling. The LMV344QIPWRQ1's 75 mA output current and 1 MHz gain-bandwidth let it charge ADC sample capacitors within acquisition windows, while the rail-to-rail output preserves full-scale codes on low-voltage supplies. A series isolation resistor of 10-50 ohm is recommended for large input capacitance to maintain phase margin, per standard TI amplifier-stability practice.
推荐
LED Indicator and Backlight Drivers
The 75 mA per-channel output current allows the LMV344QIPWRQ1 to source or sink LED indicator and small-panel backlight currents directly, eliminating external driver transistors for currents under the op-amp limit. Configured with a sense resistor, each channel becomes a simple linear current regulator; the rail-to-rail output enables control near the supply rails for low-voltage LED strings. This suits interior ambient lighting and instrument-panel indicators in automotive and industrial equipment.
推荐
Audio Buffering in Instrument Clusters
Chime, alert-tone, and low-power speaker signals in instrument clusters benefit from the LMV344QIPWRQ1's rail-to-rail output and 75 mA drive, which let the amplifier deliver meaningful voltage swing into 32-ohm and higher loads from a 5 V rail. The quad package supports stereo or multi-channel paths plus gain stages in one footprint, and AEC-Q100 qualification covers the cluster's temperature environment. Note that 1 MHz gain-bandwidth limits use to audio-band (20 Hz-20 kHz) applications.
推荐
Industrial Analog Signal Chains
Beyond automotive, the LMV344QIPWRQ1 serves industrial PLC I/O cards, transducer interfaces, and 4-20 mA loop transmitters where the rail-to-rail output and 75 mA drive support loop and actuator requirements on 3.3 V or 5 V rails. Its low-voltage CMOS operation reduces quiescent power in multi-channel cards, and the quad configuration halves board area versus single-channel amplifiers. The 125C rating also covers high-temperature industrial enclosures and motor-control cabinets.
推荐
推荐产品汇总
工程参考数据： LMV344QIPWRQ1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LMV344IPWRQ1 | LMV344IPWR | MC33204DR2 |
|---|---|---|---|---|
| Package | 14-TSSOP (PW) | 14-TSSOP (PW) - same | 14-TSSOP (PW) - same | 14-TSSOP - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Channels | 4 | 4 | 4 | 4 |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.2 V to 9 V |
| Gain-Bandwidth | 1 MHz | 1 MHz | 1 MHz | 2.2 MHz |
| AEC-Q100 | Qualified (Q1) | Qualified (Q1) | Not qualified | Qualified (per onsemi) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
关键差异点
- 75 mA high output current in a quad package （对比 LMV324-Q1 family)
- Automotive AEC-Q100 qualification with PPAP support （对比 LMV344IPWR)
- Trade-off: input common-mode not rail-to-rail （对比 MC33204DR2)
设计说明
With 75 mA drive capability, check power dissipation: P = (V+ - VOUT) * IOUT per loaded channel. The 14-TSSOP (PW) package has limited thermal relief; at 5 V driving 75 mA continuously, dissipation approaches 200 mW/channel, raising junction temperature noticeably above ambient. Derive worst-case TJ using datasheet theta-JA and keep margin below 150C for reliability in automotive modules.
When driving capacitive loads such as long cables or ADC sample capacitors, add a 10-50 ohm series isolation resistor at the output to preserve phase margin; the 75 mA drive stage can otherwise ring or oscillate with large capacitive loads. Keep feedback paths short and place gain-setting resistors close to the -IN pins to limit stray capacitance at 1 MHz bandwidth.
Do not confuse the commercial LMV344IPWR with the -Q1 part in automotive BOMs - qualification and traceability requirements demand the Q1 suffix. Also note the LMV344 is rail-to-rail OUTPUT only; inputs are not rail-to-rail, so ensure input common-mode stays within the datasheet range, especially near the positive rail, to avoid output phase inversion or degraded accuracy.
合规信息
Q1 suffix denotes AEC-Q100 automotive qualification per TI product page. RoHS/lead-free status per standard TI automotive product offering; detailed REACH/halogen data should be confirmed on ti.com product pages.
