SLASF29 January   2022 TAA5242

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements: TDM, I2S or LJ Interface
    7. 6.7 Switching Characteristics: TDM, I2S or LJ Interface
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Hardware Control
      2. 8.3.2 Audio Serial Interfaces
        1. 8.3.2.1 Time Division Multiplexed Audio (TDM) Interface
        2. 8.3.2.2 Inter IC Sound (I2S) Interface
      3. 8.3.3 Analog Input Configurations
      4. 8.3.4 Reference Voltage
    4. 8.4 Device Functional Modes
      1. 8.4.1 Active Mode
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Application
      2. 9.2.2 Design Requirements
      3. 9.2.3 Detailed Design Procedure
  11. 10Power Supply Recommendations
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.5 Electrical Characteristics

at TA = 25°C, AVDD = 3.3 V, IOVDD = 3.3 V, fIN = 1-kHz sinusoidal signal, fS = 48 kHz, 32-bit audio data, BCLK = 256 × fS, TDM target mode and PLL on (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN NOM MAX UNIT
ADC PERFORMANCE FOR INPUT RECORDING
Differential input full-scale AC signal voltage AC-coupled input 2 VRMS
Single-ended input full-scale AC signal voltage AC-coupled input 1 VRMS
SNR Signal-to-noise ratio, A-weighted(1)(2) IN1 differential AC-coupled input selected and AC signal shorted to ground, 0-dB channel gain 118 dB
SNR Signal-to-noise ratio, A-weighted(1)(2) IN1 differential DC-coupled input selected and AC signal shorted to ground, 0-dB channel gain, Device in Hign Common Mode Tolerance Mode 110 dB
SNR Signal-to-noise ratio, A-weighted(1)(2) 1.8V AVDD Operation:IN1 differential AC-coupled input selected and AC signal shorted to ground, 0-dB channel gain 110 dB
1.8V AVDD Operation:IN1 differential DC-coupled input selected and AC signal shorted to ground, 0-dB channel gain 104
DR Dynamic range, A-weighted(2) IN1 differential AC-coupled input selected and –60-dB full-scale AC signal input, 0-dB channel gain 118 dB
IN1 differential DC-coupled input selected and –60-dB full-scale AC signal input, 0-dB channel gain 110
DR Dynamic range, A-weighted(2) 1.8V AVDD Operation: IN1 differential AC-coupled input selected and –60-dB full-scale AC signal input, 0-dB channel gain 106 110 dB
1.8V AVDD Operation: IN1 differential DC-coupled input selected and –60-dB full-scale AC signal input, 0-dB channel gain 104
THD+N Total harmonic distortion(2) IN1 differential AC-coupled input selected and –1-dB full-scale AC signal input, 0-dB channel gain –95 TBD dB
IN1 differential DC-coupled input selected and –1-dB full-scale AC signal input, 0-dB channel gain –95
ADC OTHER PARAMETERS
Input impedance Differential input, between INxP and INxM, 5kΩ Mode 5.5 kΩ
Input impedance Single-ended input, between INxP and INxM, 5kΩ Mode 2.75 kΩ
Offset Shorted Input. TBD mV
Digital volume control range Programmable 0.5-dB steps –80 47 dB
Input Signal Bandwidth Upto 192KSPS FS Rate 0.46 FS
>192KSPS 90 kHz
Output data sample rate Programmable 3.675 768 kHz
Output data sample word length Programmable 16 32 Bits
Digital high-pass filter cutoff frequency First-order IIR filter 2 Hz
Interchannel isolation –1-dB full-scale AC signal line-in input to non measurement channel –134 dB
Interchannel gain mismatch –6-dB full-scale AC signal line-in input, 0-dB channel gain 0.1 dB
Interchannel phase mismatch 1-kHz sinusoidal signal 0.01 Degrees
PSRR Power-supply rejection ratio 100-mVPP, 1-kHz sinusoidal signal on AVDD, differential input selected, 0-dB channel gain 92 dB
MICROPHONE BIAS
MICBIAS noise BW = 20 Hz to 20 kHz, A-weighted, 1-µF capacitor between MICBIAS and AVSS 2 µVRMS
MICBIAS voltage AVDD=1.8V 1.375 V
MICBIAS voltage AVDD=3.3V 2.75 V
DIGITAL I/O
VIL Low-level digital input logic voltage threshold All digital pins, IOVDD 1.8-V operation –0.3 0.35 × IOVDD V
All digital pins, IOVDD 3.3-V operation –0.3 0.8
VIH High-level digital input logic voltage threshold All digital pins, IOVDD 1.8-V operation 0.65 × IOVDD IOVDD + 0.3 V
All digital pins, IOVDD 3.3-V operation 2 IOVDD + 0.3
VOL Low-level digital output voltage All digital pins, IOL = –2 mA, IOVDD 1.8-V operation 0.45 V
All digital pins, IOL = –2 mA, IOVDD 3.3-V operation 0.4
VOH High-level digital output voltage All digital pins, IOH = 2 mA, IOVDD 1.8-V operation IOVDD – 0.45 V
All digital pins, IOH = 2 mA, IOVDD 3.3-V operation 2.4
IIL Input logic-low leakage for digital inputs All digital pins, input = 0 V –5 0.1 5 µA
IIH Input logic-high leakage for digital inputs All digital pins, input = IOVDD –5 0.1 5 µA
CIN Input capacitance for digital inputs All digital pins 5 pF
TYPICAL SUPPLY CURRENT CONSUMPTION
IAVDD Current consumption in sleep mode (software shutdown mode) All device external clocks stopped TBD µA
IIOVDD 1
IAVDD Current consumption when MICBIAS ON, MICBIAS voltage 10 V, 30 mA load, ADC off fS = 48 kHz, BCLK = 256 × fS TBD mA
IIOVDD 0.01
IAVDD Current consumption with ADC 2-channel operation at fS 16-kHz, MICBIAS off, PLL on, BCLK = 512 × fS TBD mA
IIOVDD 0.1
IAVDD Current consumption with ADC 2-channel operation at fS 48-kHz, MICBIAS on, PLL off, BCLK = 512 × fS TBD mA
IIOVDD 0.1
(1) Ratio of output level with 1-kHz full-scale sine-wave input, to the output level with the AC signal input shorted to ground, measured A-weighted over a 20-Hz to 20-kHz bandwidth using an audio analyzer.
(2) All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter can result in higher THD and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter removes out-of-band noise, which, although not audible, can affect dynamic specification values.