My Inquiry
My Account
Texas Instruments INA1650QPWRQ1
- Part No.:
- INA1650QPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
INA1650QPWRQ1.pdf
- Description:
- IC AUDIO RECEIVER 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,810
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA1650QPWRQ1 from Texas Instruments is a dual-channel AEC-Q100 Grade 1 automotive-qualified audio line receiver with 91 dB typical common-mode rejection ratio (CMRR), 1 MΩ differential input impedance, and –119 dB THD+N at 1 kHz (20 dBu, ±12 V supply). It operates from ±2.25 V to ±12 V, integrates EMI filters and a buffered midsupply reference (VMID(OUT)), and targets high-fidelity cabin microphone preamplifiers and infotainment system inputs.
For engineers reviewing the INA1650QPWRQ1 datasheet, INA1650QPWRQ1 pinout, INA1650QPWRQ1 application, or INA1650QPWRQ1 equivalent, this page delivers verified electrical specs, validated dual-channel pin functions, confirmed automotive-grade thermal and ESD performance (HBM ±4000 V), and real-world audio signal-chain design context - not generic amplifier descriptions.
Technical Context
The INA1650QPWRQ1 implements a precision instrumentation amplifier topology with matched internal 10-kΩ resistors and input buffers - unlike basic difference amplifiers - enabling stable 91 dB CMRR even with source impedance mismatch. Its dual-channel architecture features isolated signal paths and >130 dB channel separation at 1 kHz when REF/COM pins are grounded.
It embeds an integrated supply divider (two 500-kΩ resistors + buffer) generating VMID(OUT) at (VCC + VEE)/2 with <1 Ω output impedance and 1.56 µVRMS noise (20 Hz–20 kHz). The VMID(IN) pin allows external capacitor filtering of supply-divider noise, while EMI rejection is enhanced by on-chip low-pass filtering with 80 MHz corner frequency and >111 dB common-mode EMIRR at 900 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CMRR | 91 dB typical (±12 V, REF/COM grounded); maintains ≥82 dB over –40°C to +125°C - ensures robust noise rejection in noisy automotive cabins. |
| THD+N | –119 dB at 1 kHz, 20 dBu output (±12 V); enables ultra-low-distortion audio capture for premium infotainment systems. |
| Input Impedance | 1 MΩ differential (min 850 kΩ); preserves signal integrity from high-Z sources like condenser microphones and line-level outputs. |
| Supply Range | ±2.25 V to ±12 V (4.5 V to 24 V total); supports both low-voltage embedded audio modules and full-featured head units. |
| Output Drive | ±75 mA short-circuit current; sustains operation into 600 Ω loads without latch-up - suitable for driving analog-to-digital converters and power amp inputs. |
| EMI Rejection | 111 dB common-mode EMIRR at 900 MHz; mitigates interference from cellular, Bluetooth, and radar bands in vehicle electronics. |
| Quiescent Current | 10.5 mA typical (±12 V); balances low-power operation with high-performance audio fidelity for always-on cabin sensing. |
Pinout & Package
INA1650QPWRQ1 is housed in a 14-pin TSSOP package (5.00 mm × 4.40 mm), optimized for automated assembly and thermal performance (RθJA = 97.0°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive power supply | Highest potential rail; must be decoupled locally to maintain PSRR >85 dB up to 1 MHz. |
| IN+ A (Pin 2) | Noninverting input, Channel A | Differential signal path entry; high-impedance node requiring guarded PCB routing to preserve CMRR. |
| COM A (Pin 3) | Input common, Channel A | Bias return path for IN+ A/IN− A; connects to ground (dual-supply) or VMID(OUT) (single-supply) to set common-mode voltage. |
| IN− A (Pin 4) | Inverting input, Channel A | Complements IN+ A; internal matching to IN+ A enables >130 dB channel separation and low gain error (0.05% max). |
| IN− B (Pin 5) | Inverting input, Channel B | Independent second channel input; no crosstalk coupling to Channel A - validated at 140 dB isolation (1 kHz, REF/COM grounded). |
| COM B (Pin 6) | Input common, Channel B | Separate bias return for Channel B; enables independent common-mode configuration per channel. |
| IN+ B (Pin 7) | Noninverting input, Channel B | Second high-Z audio input; identical electrical specs to IN+ A - supports stereo or dual-mic configurations without performance trade-offs. |
| OUT B (Pin 8) | Output, Channel B | Low-impedance buffered output (<1 Ω); drives ADCs, codecs, or downstream op-amps directly without external buffering. |
| REF B (Pin 9) | Reference input, Channel B | Must be driven from low-impedance source (e.g., VMID(OUT)); open or high-Z connection degrades CMRR by >10 dB. |
| VMID(OUT) (Pin 10) | Buffered midsupply reference output | Provides stable (VCC + VEE)/2 voltage with <1 Ω ZOUT; used as bias for REF A/B and external analog circuitry in single-supply designs. |
| VMID(IN) (Pin 11) | Input node of internal supply divider | Connect 1 µF capacitor to ground here to reduce noise from resistor-divider thermal noise and supply ripple. |
| REF A (Pin 12) | Reference input, Channel A | Identical function to REF B; ties to VMID(OUT) or ground depending on supply configuration - critical for CMRR stability. |
| OUT A (Pin 13) | Output, Channel A | Matched performance to OUT B: 2.2 µs 0.01% settling time, 330 ns overload recovery, and 10 V/µs slew rate. |
| VEE (Pin 14) | Negative power supply | Lowest potential rail; requires symmetric decoupling with VCC to maintain PSRR and prevent rail asymmetry distortion. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated operation from –40°C to +125°C ambient; meets automotive reliability and lifetime requirements for cabin electronics. |
| Integrated EMI filters | On-die low-pass filtering with 80 MHz corner and >111 dB common-mode EMIRR at 900 MHz - reduces need for external RF chokes. |
| Buffered VMID(OUT) reference | Stable midsupply output (±2 mV offset, 0.35 Ω ZOUT) eliminates external voltage dividers and improves system-level noise floor. |
| Ultra-low THD+N | –119 dB at 1 kHz (20 dBu) enables 24-bit audio resolution without additional post-processing or dithering. |
| Short-circuit protection | ±75 mA continuous short-circuit current limit per channel; prevents latch-up during cable fault conditions in vehicle harnesses. |
| High input impedance | 1 MΩ differential input minimizes loading on sensitive microphone capsules and legacy line-level sources. |
Applications
| Cabin Microphone Preamplifier | Infotainment System Audio Input |
|---|---|
Use Scenario: Capturing voice commands and occupant speech in automotive cabins with high ambient noise (HVAC, road, engine). IC Role / Device Role / Timing Role: Dual-channel differential line receiver conditioning mic signals before ADC conversion; rejects common-mode noise from 12-V power rails and RF sources. Use Value: 91 dB CMRR and –104.7 dBu noise floor enable >65 dB SNR for far-field voice recognition without external gain stages. |
Use Scenario: Accepting analog audio from external devices (smartphones, USB DACs, rear-seat entertainment) into head unit processing. IC Role / Device Role / Timing Role: High-fidelity unity-gain line receiver converting unbalanced or balanced line signals to single-ended outputs for codec interface. Use Value: –119 dB THD+N and 2.7 MHz bandwidth preserve full 20 Hz–20 kHz audio spectrum integrity for premium sound systems. |
| Automotive Diagnostic Audio Interface | ADAS Cabin Monitoring System |
Use Scenario: Isolating diagnostic audio tones (e.g., CAN bus error beeps, OBD-II alerts) from noisy vehicle electrical environments. IC Role / Device Role / Timing Role: Precision differential receiver rejecting ground-loop noise and conducted EMI on diagnostic port cables. Use Value: 140 dB channel separation and 80 MHz EMI filter ensure clean tone detection even during simultaneous high-power actuator switching. |
Use Scenario: Processing audio from multiple distributed microphones for driver drowsiness detection, emotion analysis, or occupant counting. IC Role / Device Role / Timing Role: Dual-channel receiver with independent COM/REF pins enabling flexible single- or dual-supply biasing across spatially separated sensors. Use Value: Matched gain error (0.05% max) and offset drift (2 µV/°C) ensure consistent channel-to-channel response across temperature for reliable AI inference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio line receiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA1651QPWRQ1 | Single-channel version in same 14-pin TSSOP; identical electrical specs per channel but no Channel B functionality. | Suitable only for mono-input systems; lacks dual-channel isolation and independent COM/REF per channel. | Select when board space or cost constraints eliminate need for stereo/multi-mic support - same layout compatibility but halved channel count. |
| PGA2500IDBTR | Programmable-gain instrumentation amplifier (1× to 100×); higher noise (–97 dBu), lower CMRR (85 dB), no integrated VMID or EMI filters. | Requires external gain staging and reference circuitry; not AEC-Q100 qualified; suited for industrial test equipment, not automotive. | Choose only if variable gain is mandatory and automotive qualification is unnecessary; otherwise, INA1650QPWRQ1 provides superior noise, CMRR, and integration for vehicle use. |
Compared with INA1651QPWRQ1, the INA1650QPWRQ1 adds a fully independent second channel with matched performance and isolation - essential for stereo audio or multi-sensor cabin monitoring. Against PGA2500IDBTR, it delivers 12 dB lower noise, 6 dB higher CMRR, integrated EMI filtering, and AEC-Q100 compliance - making it the only qualified solution for safety-critical automotive audio front-ends.
Availability
INA1650QPWRQ1 is available at Aetrix Electronics and suitable for cabin microphone preamplifiers, infotainment system audio inputs, and ADAS cabin monitoring systems requiring stable component supply across automotive production lifecycles.
Supply support for INA1650QPWRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with deep expertise in automotive-grade signal conditioning and high-reliability IC design.
The INA165x-Q1 product line was engineered specifically for automotive audio signal chains - delivering AEC-Q100 qualified, ultra-low-noise, high-CMRR line receivers that replace discrete op-amp + resistor networks in cabin microphones and infotainment inputs.
FAQ
What is the maximum supply voltage for INA1650QPWRQ1?
The absolute maximum supply voltage (VCC to VEE) for INA1650QPWRQ1 is 40 V, but the recommended operating range is ±2.25 V to ±12 V (4.5 V to 24 V total). Operation beyond ±12 V is not characterized for audio performance metrics like THD+N or CMRR, and may reduce long-term reliability under automotive temperature stress.
How does INA1650QPWRQ1 achieve high CMRR with mismatched source impedances?
INA1650QPWRQ1 uses an instrumentation amplifier topology with precision-matched internal 10-kΩ resistors and input buffers - unlike basic difference amplifiers. This architecture maintains ≥84 dB CMRR even with 20 Ω source impedance mismatch, as verified in the datasheet's Electrical Characteristics table under CMRR test conditions.
Can INA1650QPWRQ1 operate from a single 5-V supply?
Yes - INA1650QPWRQ1 supports single-supply operation using its integrated VMID(OUT) pin. Connect REF A/B and COM A/B to VMID(OUT), bias VMID(IN) with a 1 µF capacitor to ground, and use VCC = 5 V and VEE = 0 V. Output swing remains rail-to-rail capable within specified load conditions.
What is the purpose of the VMID(IN) pin on INA1650QPWRQ1?
The VMID(IN) pin is the input node of the internal 500-kΩ/500-kΩ supply divider. Connecting a 1 µF capacitor from VMID(IN) to ground reduces thermal noise and supply ripple coupling into the VMID(OUT) reference, improving overall system SNR - especially critical in low-level microphone preamplifier applications.
Is INA1650QPWRQ1 pin-compatible with any non-automotive variants?
No - INA1650QPWRQ1 is the automotive-qualified (AEC-Q100 Grade 1) variant and shares the same 14-pin TSSOP footprint as the industrial INA1650PW, but differs in screening, test coverage, and guaranteed performance over –40°C to +125°C. Substituting non-Q1 parts voids automotive qualification and may compromise CMRR stability at temperature extremes.
INA1650QPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SoundPlus™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Audio Receiver
- Applications:
- Audio
- Number of Channels:
- 2
- Interface:
- -
- Voltage - Supply:
- 4.5V ~ 25V
- Operating Temperature:
- -40°C ~ 125°C
- Specifications:
- -
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
INA1650QPWRQ1 FAQ
1.How can I place an order for INA1650QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA1650QPWRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for INA1650QPWRQ1 reliable?
The price and inventory of INA1650QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA1650QPWRQ1 is usually 5 days.
3.What payment methods are accepted for INA1650QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA1650QPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA1650QPWRQ1?
INA1650QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA1650QPWRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for INA1650QPWRQ1?
For technical support, including INA1650QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA1650QPWRQ1 requirements.
6.How does Aetrix verify that INA1650QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All INA1650QPWRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that INA1650QPWRQ1 meets industry standards.
7.What is the process for return or replacement of INA1650QPWRQ1?
All INA1650QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA1650QPWRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The INA1650QPWRQ1 part is unused and in its original packaging.
Return procedure for INA1650QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA1650QPWRQ1 Tags
-
SA571DR2G
onsemi
-
ADAU7002ACBZ-R7
Analog Devices Inc.
-
DRV135UA/2K5
Texas Instruments
-
DRV134UA/1K
Texas Instruments
-
DRV134PA
Texas Instruments
-
DRV134UA
Texas Instruments
-
DRV135UA
Texas Instruments
-
SA572DR2G
onsemi
-
PGA2311U/1K
Texas Instruments
-
SI8244BB-D-IS1R
Skyworks Solutions Inc.
-
CS8416K-CZZR
Cirrus Logic Inc.
-
SRC4392IPFBR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
