INTERNAL OSCILLATOR-RC_CLK |
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Oscillator frequency for SAR |
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|
8.2 |
|
MHz |
VOLUME CONTROL PIN (ADC); VOL/MICDET pin enabled |
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Input voltage range |
VOL/MICDET pin configured as volume control (page 0 / register 116, bit D7 = 1 and page 0 / register 67, bit D7 = 0) |
0 |
|
0.5 × AVDD |
V |
|
Input capacitance |
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2 |
|
pF |
|
Volume control steps |
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|
128 |
|
Steps |
AUDIO ADC |
Microphone Input to ADC, 984-Hz Sine-Wave Input, fS = 48 kHz, AGC = OFF |
|
Input signal level (0-dB) |
MIC with R1 = 20 kΩ (page 1 / register 48 and register 49, bits D7-D6) |
|
0.707 |
|
VRMS |
SNR |
Signal-to-noise ratio |
fS = 48 kHz, 0-dB PGA gain, MIC input AC-shorted to ground; measured as idle-channel noise, A-weighted(1) (2) |
80 |
91 |
|
dB |
|
Dynamic range |
fS = 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –60-dBFS input applied, referenced to 0.707-VRMS input, A-weighted(1) (2) |
|
91 |
|
dB |
THD+N |
Total harmonic distortion + noise |
fS = 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –2 dBFS input applied, referenced to 0.707-VRMS input |
|
–85 |
–70 |
dB |
THD |
Total harmonic distortion |
fS = 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –2 dBFS input applied, referenced to 0.707-VRMS input |
|
–91 |
|
dB |
|
Input capacitance |
MIC input |
|
2 |
|
pF |
Microphone Bias |
|
Voltage output |
Page 1 / register 46, bits D1–D0 = 10 |
2.25 |
2.5 |
2.75 |
V |
Page 1 / register 46, bits D1–D0 = 01 |
|
2 |
|
|
Voltage regulation |
At 4-mA load current, page 1 / register 46, bits D1–D0 = 10 (MICBIAS = 2.5 V) |
|
5 |
|
mV |
At 4-mA load current, page 1 / register 46, bits D1–D0 = 01 (MICBIAS = 2 V) |
|
7 |
|
Audio ADC Digital Decimation Filter Characteristics |
See Section 7.3.9.4.4 for audio ADC decimation filter characteristics. |
AUDIO DAC |
DAC HEADPHONE OUTPUT, AC-coupled load = 16 Ω (single-ended), driver gain = 0 dB, parasitic capacitance = 30 pF |
|
Full-scale output voltage (0 dB) |
Output common-mode setting = 1.65 V |
|
0.707 |
|
VRMS |
SNR |
Signal-to-noise ratio |
Measured as idle-channel noise, A-weighted(1) (2) |
80 |
95 |
|
dB |
THD |
Total harmonic distortion |
0-dBFS input |
|
–85 |
–65 |
dB |
THD+N |
Total harmonic distortion + noise |
0-dBFS input |
|
–82 |
–60 |
dB |
|
Mute attenuation |
|
|
87 |
|
dB |
PSRR |
Power-supply rejection ratio(4) |
Ripple on HPVDD (3.3 V) = 200 mVp-p at 1 kHz |
|
–62 |
|
dB |
PO |
Maximum output power |
RL = 32 Ω, THD+N = –60 dB |
|
20 |
|
mW |
RL = 16 Ω, THD+N = –60 dB |
|
60 |
|
DAC LINEOUT (HP Driver in Lineout Mode) |
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|
|
|
SNR |
Signal-to-noise ratio |
Measured as idle-channel noise, A-weighted |
|
95 |
|
dB |
THD |
Total harmonic distortion |
0-dBFS input, 0-dB gain |
|
–86 |
|
dB |
THD+N |
Total harmonic distortion + noise |
0-dBFS input, 0-dB gain |
|
–83 |
|
dB |
DAC Digital Interpolation Filter Characteristics |
See Section 7.3.10.1.4 for DAC interpolation filter characteristics. |
DAC OUTPUT to CLASS-D SPEAKER OUTPUT; Load = 8 Ω (differential), 50 pF |
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Output voltage |
SPLVDD = SPRVDD = 3.6 V, BTL measurement, DAC input = 0 dBFS, DAC CM (page 1 / register 31, bits D4–D3) = 1.65 V, class-D gain = 6 dB, THD = –16.5 dB |
|
2.2 |
|
VRMS |
SPLVDD = SPRVDD = 3.6 V, BTL measurement, DAC input = –2 dBFS, DAC CM (page 1 / register 31, bits D4–D3) = 1.65 V, class-D gain = 6 dB, THD = –20 dB |
|
2.1 |
|
|
Output, common-mode |
SPLVDD = SPRVDD = 3.6 V, BTL measurement, DAC input = mute, class-D gain = 6 dB |
|
1.8 |
|
V |
SNR |
Signal-to-noise ratio |
SPLVDD = SPRVDD = 3.6 V, BTL measurement, class-D gain = 6 dB, measured as idle-channel noise, A-weighted (with respect to full-scale output value of 2.2 VRMS)(1) (2) |
|
87 |
|
dB |
THD |
Total harmonic distortion |
SPLVDD = SPRVDD = 3.6 V, BTL measurement, CM = 1.8 V, DAC input = –6 dBFS, class-D gain = 6 dB |
|
–67 |
|
dB |
THD+N |
Total harmonic distortion + noise |
SPLVDD = SPRVDD = 3.6 V, BTL measurement, CM = 1.8 V, DAC input = –6 dBFS, class-D gain = 6 dB |
|
–66 |
|
dB |
PSRR |
Power-supply rejection ratio(3) |
SPLVDD = SPRVDD = 3.6 V, BTL measurement, ripple on SPLVDD/SPRVDD = 200 mVp-p at 1 kHz |
|
–44 |
|
dB |
|
Mute attenuation |
|
|
110 |
|
dB |
PO |
Maximum output power |
SPLVDD = SPRVDD = 3.6 V, BTL measurement, CM = 1.8 V, class-D gain = 18 dB, THD = 10% |
|
540 |
|
mW |
SPLVDD = SPRVDD = 4.3 V, BTL measurement, CM = 1.8 V, class-D gain = 18 dB, THD = 10% |
|
790 |
|
mW |
SPLVDD = SPRVDD = 5.5 V, BTL measurement, CM = 1.8 V, class-D gain = 18 dB, THD = 10% |
|
1.29 |
|
W |
|
Output-stage leakage current for direct battery connection |
SPLVDD = SPRVDD = 4.3 V, device is powered down (power-up-reset condition) |
|
80 |
|
nA |
ADC and DAC POWER CONSUMPTION |
For ADC and DAC power consumption based per selected processing block, see Section 7.3.8. |
DIGITAL INPUT/OUTPUT |
|
Logic family |
|
|
CMOS |
|
|
VIH |
Logic Level |
IIH = 5 µA, IOVDD = 1.6 V |
0.7 × IOVDD |
|
|
V |
IIH = 5 µA, IOVDD = 1.6 V |
IOVDD |
|
|
VIL |
IIL = 5 µA, IOVDD = 1.6 V |
–0.3 |
|
0.3 × IOVDD |
IIL = 5 µA, IOVDD = 1.6 V |
|
|
0 |
VOH |
IOH = 2 TTL loads |
0.8 × IOVDD |
|
|
VOL |
IOL = 2 TTL loads |
|
|
0.1 × IOVDD |
|
Capacitive load |
|
|
10 |
|
pF |