LMV344QIPWRQ1 - Quad 1MHz Rail-to-Rail Op-Amp | TI Automotive
MPN: LMV344QIPWRQ1 ✓ AktifLMV344QIPWRQ1 Ringkasan
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.
Alternatif penggantian untuk LMV344QIPWRQ1 — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian LMV344QIPWRQ1 (sama faktor bentuk dan footprint) — berbeda di dalam Output Type, Supply Voltage Range.
LMV344IPWRQ1
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
LMV344IPWR
✅ Drop-InKontak untuk harga
Lihat Datasheet →MC33204DR2
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
TS924IQ2T
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
LMV344QIPWRQ1 Rating Maksimal & Karakteristik Listrik
| 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 |
| Tipe Output | Rail-to-Rail Output |
| Amplifier Type | CMOS Operational Amplifier |
| Automotive Qualification | AEC-Q100 (Q1) |
| Suhu Kerja | -40C to +125C |
| Paket | 14-TSSOP (PW) |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
Konfigurasi Pin LMV344QIPWRQ1
| Pin produk 1 | OUT1 — Amplifier 1 output (rail-to-rail) |
| Pin produk 2 | -IN1 — Amplifier 1 inverting input |
| Pin produk 3 | +IN1 — Amplifier 1 non-inverting input |
| Pin produk 4 | V+ — Positive supply, 2.7 V to 5.5 V |
| Pin produk 5 | +IN2 — Amplifier 2 non-inverting input |
| Pin produk 6 | -IN2 — Amplifier 2 inverting input |
| Pin produk 7 | OUT2 — Amplifier 2 output |
| Pin produk 8 | OUT3 — Amplifier 3 output |
| Pin produk 9 | -IN3 — Amplifier 3 inverting input |
| Pin produk 10 | +IN3 — Amplifier 3 non-inverting input |
| Pin produk 11 | GND — Ground / negative rail |
| Pin produk 12 | +IN4 — Amplifier 4 non-inverting input |
| Pin produk 13 | -IN4 — Amplifier 4 inverting input |
| Pin produk 14 | OUT4 — Amplifier 4 output |
Aplikasi Umum
LMV344QIPWRQ1 cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk LMV344QIPWRQ1 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- 75 mA high output current in a quad package (vsLMV324-Q1 family)
- Automotive AEC-Q100 qualification with PPAP support (vsLMV344IPWR)
- Trade-off: input common-mode not rail-to-rail (vsMC33204DR2)
Catatan Desain
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.
Informasi Konformitas
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.
