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WM8962B Datasheet(PDF) 18 Page - Wolfson Microelectronics plc

Part # WM8962B
Description  Ultra-Low Power Stereo CODEC with Audio Enhancement DSP, 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers
PDF  295 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8962B Datasheet(HTML) 18 Page - Wolfson Microelectronics plc

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WM8962
18
Rev 4.3
Test Conditions
MICVDD = DCVDD = DBVDD = CPVDD = AVDD = PLLVDD = 1.8V, SPKVDD1 = SPKVDD2 = 5V.
TA = +25
oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Analogue Reference Levels
Mid-rail Reference Voltage
VMIDC
–3%
AVDD/2
+3%
V
Microphone Bias
Bias Voltage
(Note that MICVDD must be at
least 300mV higher than VMICBIAS)
VMICBIAS
MICVDD=2.5V
2mA load current
MICBIAS_LVL=1
-4%
1.156
AVDD
+4%
V
MICVDD=2.5V
2mA load current
MICBIAS_LVL=0
-4%
0.828
AVDD
+4%
PSRR (MICVDD)
PSRR
100mV (peak-peak) 1kHz,
MICBIAS_LVL=1
74
dB
PSRR (AVDD)
PSRR
100mV (peak-peak) 1kHz,
MICBIAS_LVL=1
52
dB
Maximum Bias Current Source
IMICBIAS
2
mA
Output Noise spectral density
@1kHz
Vst
MICBIAS_LVL=1
85
nV/
Hz
MICBIAS Current Detect Function (see Note 1)
Current Detect Threshold
MICDET_THR = 000
38
64
90
A
MICDET_THR = 001
-25%
166
+25%
MICDET_THR = 010
-20%
375
+20%
MICDET_THR = 011
-20%
475
+20%
MICDET_THR = 100
-20%
575
+20%
MICDET_THR = 101
-20%
680
+20%
MICDET_THR = 110
-20%
885
+20%
MICDET_THR = 111
-20%
990
+20%
Delay Time for Current Detect
Interrupt
tDET
1.6
ms
MICBIAS Short Circuit (Hook Switch) Detect Function (see Note 1)
Short Circuit Detect Threshold
MICSHORT_THR = 00
-18%
515
+18%
A
MICSHORT_THR = 01
-15%
680
+15%
MICSHORT_THR = 10
-15%
1050
+15%
MICSHORT_THR = 11
-15%
1215
+15%
Delay Time for
Short Circuit Detect Interrupt
tSHORT
47
ms
Charge Pump
Maximum Charge Pump switching
frequency
CPFREQ
1
MHz
Flyback capacitor
(between CPCA and CPCB pins)
CFB
at 2V
1
µF
VPOS capacitor
at 2V
2
µF
VNEG capacitor
at 2V
2
µF
Charge pump start-up time
190
µs



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