SoundPlus™ high common-mode rejection (91-dB), low THD+N (-120-dB) differential line receiver ;


Product details


Number of channels (#) 1 Gain (V/V) 1 CMRR Rs=0Ω (Min) (dB) 85 THD + N @ 1 kHz (%) 0.00039 Noise floor (RTO, 20 kHz BW) (dBu) -104.7 Differential input impedance (kΩ) 1000 Common mode input impedance (kΩ) 250 Slew rate (Typ) (V/us) 10 Supply voltage (Max) (V) 36 Supply voltage (Min) (V) 4.5 Iq per channel (Typ) (mA) 6 Small-Signal bandwidth (Typ) (MHz) 2.7 Operating temperature range (C) -40 to 125 open-in-new Find other Audio line receivers

Package | Pins | Size

TSSOP (PW) 14 32 mm² 5 x 6.4 open-in-new Find other Audio line receivers


  • High Common-Mode Rejection:
    91 dB (Typical)
  • High Input Impedance: 1-MΩ Differential
  • Ultra-Low Noise: –104.7 dBu, Unweighted
  • Ultra-Low Total Harmonic Distortion + Noise:
    –120 dB THD+N (22 dBu, 22-kHz Bandwidth)
  • Wide Bandwidth: 2.7 MHz
  • Low Quiescent Current: 6 mA (INA1651, Typical)
  • Short-Circuit Protection
  • Integrated EMI Filters
  • Wide Supply Range: ±2.25 V to ±18 V
  • Available in Small 14-Pin TSSOP Package
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The dual-channel INA1650 and single-channel INA1651 (INA165x) SoundPlus™ audio line receivers achieve an extremely-high common-mode rejection ratio (CMRR) of 91 dB while maintaining an ultra-low THD+N of –120 dB at 1 kHz for 22-dBu signal levels. Precision matching of on-chip resistors give the INA165x devices excellent CMRR performance. These resistors have matching that is far superior compared to external components, and are immune to mismatches introduced by printed circuit board (PCB) layout. Unlike other line receiver products, the INA165x CMRR is characterized over temperature and tested in production to deliver consistent performance in a wide variety of applications.

The INA165x devices operate over a very-wide-supply range of ±2.25 V to ±18 V, on 10.5 mA of supply current. In addition to the line-receiver channels, a buffered mid-supply reference output is included, making the INA165x configurable for dual- or single-supply applications. The mid-supply output can be used as a bias voltage for other analog circuitry in the signal chain. These devices are specified from –40°C to +125°C.


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Technical documentation

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Type Title Date
* Data sheet INA165x SoundPlus™ High Common-Mode Rejection Line Receivers datasheet (Rev. B) Nov. 28, 2018
User guide INA1651EVM SoundPlus™ High Common-Mode Rejection Line Receiver Evaluation Module Sep. 19, 2018

Design & development

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Hardware development

document-generic User guide
The INA1651EVM is a hardware platform for evaluating the performance of the INA1651 audio line receiver.
  • Eases design by providing a quick and simple way to evaluate the INA1651
  • Professional audio connectors provide an accurate way to test the performance of a end product
  • Easily change from single supply to dual supply with one jumper
  • Accepts both differential and single-ended inputs

Design tools & simulation

SBOMAR6A.ZIP (19 KB) - PSpice Model
SBOMAR7A.ZIP (16 KB) - TINA-TI Spice Model
SBOMAR8A.TSC (290 KB) - TINA-TI Reference Design
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

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