JAJSUM7 May 2024 PCM1841-Q1
ADVANCE INFORMATION
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
ADC CONFIGURATION | |||||||
AC input impedance | Input pins INxP or INxM | 2.5 | kΩ | ||||
ADC PERFORMANCE FOR LINE/MICROPHONE INPUT RECORDING : AVDD 3.3V OPERATION | |||||||
Differential input full-scale AC signal voltage | AC-coupled input | 2 | VRMS | ||||
SNR | Signal-to-noise ratio, A-weighted(1)(2) | IN1 differential input selected and AC signal shorted to ground, DRE enabled (DRE_LVL = –36dB, DRE_MAXGAIN = 24dB) | 115 | 122 | dB | ||
IN1 differential input selected and AC signal shorted to ground, DRE disabled | 106 | 112 | |||||
DR | Dynamic range, A-weighted(2) | IN1 differential input selected and –60dB full-scale AC signal input, DRE enabled (DRE_LVL = –36dB, DRE_MAXGAIN = 24dB) | 123 | dB | |||
IN1 differential input selected and –60dB full-scale AC signal input, DRE disabled | 113 | ||||||
THD+N | Total harmonic distortion(2)(3) | IN1 differential input selected and –1dB full-scale AC signal input, DRE enabled (DRE_LVL = –36dB, DRE_MAXGAIN = 24dB) | –98 | –80 | dB | ||
IN1 differential input selected and –1dB full-scale AC signal input, DRE disabled | –98 | ||||||
ADC OTHER PARAMETERS | |||||||
Output data sample rate | 7.35 | 192 | kHz | ||||
Output data sample word length | 32 | Bits | |||||
Interchannel isolation | –1dB full-scale AC-signal input to non measurement channel | –124 | dB | ||||
Interchannel gain mismatch | –6dB full-scale AC-signal input | 0.1 | dB | ||||
Gain drift | across temperature range 15°C to 35°C | –4.4 | ppm/°C | ||||
Interchannel phase mismatch | 1kHz sinusoidal signal | 0.02 | Degrees | ||||
Phase drift | 1kHz sinusoidal signal, across temperature range 15°C to 35°C | 0.0005 | Degrees/°C | ||||
PSRR | Power-supply rejection ratio | 100mVPP, 1kHz sinusoidal signal on AVDD, differential input selected, 0dB channel gain | 102 | dB | |||
CMRR | Common-mode rejection ratio | Differential microphone input selected, 100mVPP, 1kHz signal on both pins and measure level at output | 60 | dB | |||
MICROPHONE BIAS | |||||||
MICBIAS noise | BW = 20Hz to 20kHz, A-weighted, 1μF capacitor between MICBIAS and AVSS | 1.6 | µVRMS | ||||
MICBIAS voltage | VREF | V | |||||
MICBIAS current drive | 20 | mA | |||||
MICBIAS load regulation | Measured up to max load | 0 | 0.6 | 1.8 | % | ||
MICBIAS over current protection threshold | 22 | mA | |||||
DIGITAL I/O | |||||||
VIL(SHDNZ) | Low-level digital input logic voltage threshold | SHDNZ pin | –0.3 | 0.25 × IOVDD | V | ||
VIH(SHDNZ) | High-level digital input logic voltage threshold | SHDNZ pin | 0.75 × IOVDD | IOVDD + 0.3 | V | ||
VIL | Low-level digital input logic voltage threshold | All digital pins, IOVDD 1.8V operation | –0.3 | 0.3 × IOVDD | V | ||
All digital pins, IOVDD 3.3V operation | –0.3 | 0.8 | |||||
VIH | High-level digital input logic voltage threshold | All digital pins, IOVDD 1.8V or 3.3V operation | 0.7 × IOVDD | IOVDD + 0.3 | V | ||
VOL | Low-level digital output voltage | All digital pins, IOL = –2mA, IOVDD 1.8V operation | 0.45 | V | |||
All digital pins, IOL = –2mA, IOVDD 3.3V operation | 0.4 | ||||||
VOH | High-level digital output voltage | All digital pins, IOH = 2mA, IOVDD 1.8V operation | IOVDD – 0.45 | V | |||
All digital pins, IOH = 2mA, IOVDD 3.3V operation | 2.4 | ||||||
IIH | Input logic-high leakage for digital inputs | All digital pins, input = IOVDD | –5 | 0.1 | 5 | µA | |
IIL | Input logic-low leakage for digital inputs | All digital pins, input = 0V | –5 | 0.1 | 5 | µA | |
CIN | Input capacitance for digital inputs | All digital pins | 5 | pF | |||
TYPICAL SUPPLY CURRENT CONSUMPTION | |||||||
IAVDD | Current consumption in hardware shutdown mode | SHDNZ = 0, AVDD = 3.3V, internal AREG | 1 | µA | |||
IIOVDD | SHDNZ = 0, all external clocks stopped, IOVDD = 3.3V | 0.2 | |||||
IIOVDD | SHDNZ = 0, all external clocks stopped, IOVDD = 1.8V | 0.15 | |||||
IAVDD | Current consumption with ADC 4 channel operating at fS 16kHz, BCLK = 256 × fS and DRE disable | AVDD = 3.3V, internal AREG | 21.3 | mA | |||
IIOVDD | IOVDD = 3.3V | 0.15 | |||||
IIOVDD | IOVDD = 1.8V | 0.04 | |||||
IAVDD | Current consumption with ADC 4 channel operating at fS 48kHz, BCLK = 256 × fS and DRE disable | AVDD = 3.3V, internal AREG | 22.9 | mA | |||
IIOVDD | IOVDD = 3.3V | 0.25 | |||||
IIOVDD | IOVDD = 1.8V | 0.1 | |||||
IAVDD | Current consumption with ADC 4 channel operating at fS 48kHz, BCLK = 256 × fS and DRE enable | AVDD = 3.3V, internal AREG | 25.0 | mA | |||
IIOVDD | IOVDD = 3.3V | 0.25 | |||||
IIOVDD | IOVDD = 1.8V | 0.1 |