WM9714L_06 Datasheet, PDF (9/94 Pages) Wolfson Microelectronics plc – AC 97 Audio CODEC

Pre-Production
AUXILIARY ADC
Test Conditions
DBVDD = 3.3V, DCVDD = 3.3V, AVDD = 3.3V, TA = +25^oC, unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
Input Pins AUX4, COMP1/AUX1, COMP2/AUX2
Input Voltage
Input leakage current
AUX pin not selected as
AUX ADC input
ADC Resolution
Differential Non-Linearity Error DNL
Integral Non-Linearity Error
INL
Offset Error
Gain Error
Power Supply Rejection
PSRR
Channel-to-channel isolation
Throughput Rate
DEL = 1111
(zero settling time)
Settling Time (programmable)
MCLK = 24.576MHz
MIN
AGND
0
TYP
<10
12
±0.25
50
80
WM9714L
MAX
AVDD
±1
±2
±4
±6
48
6
UNIT
V
nA
bits
LSB
LSB
LSB
LSB
dB
dB
kHz
ms
COMPARATORS
Test Conditions
DBVDD = 3.3V, DCVDD = 3.3V, AVDD = 3.3V, TA = +25^oC, unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
COMP1/AUX1 and COMP2/AUX2 (pins 29, 30 – when not used as mic inputs)
Input Voltage
AGND
Input leakage current
pin not selected as AUX
<10
ADC input
Comparator Input Offset
-50
(COMP1, COMP2 only)
COMP2 delay (COMP2 only)
MCLK = 24.576MHz
0
MAX
AVDD
+50
10.9
UNIT
V
nA
mV
s
REFERENCE VOLTAGES
Test Conditions
DBVDD=3.3V, DCVDD = 3.3V, AVDD = 3.3V, TA = +25^oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.
PARAMETER
Audio ADCs, DACs, Mixers
Reference Input/Output
Buffered Reference Output
Microphone Bias
Bias Voltage
Bias Current Source
Output Noise Voltage
SYMBOL TEST CONDITIONS
CAP2 pin
VREF pin
VMICBIAS
IMICBIAS
Vn
1K to 20kHz
MIN
1.63
1.64
2.92
TYP
1.65
1.65
2.97
15
MAX
1.66
1.67
3.00
3
UNIT
V
V
V
mA
nV/√Hz
w
PP Rev 3.0 June 2006
9