Pre-Production
WM8850
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit data unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Analogue Input 1 (VIN1LP, VIN1LN, VIN1RP, VIN1RN)
VRMS
Maximum Differential
Input Signal Level
2.25 x
AVDD/5
VINDIFF(max)
0dB gain
0dB gain
Maximum Single-ended
Input Signal Level
1.6 x
AVDD/5
VINSE(max)
VRMS
-12dB gain
0dB gain
42
27
kΩ
Input impedance
ZIN
kΩ
+12dB
gain
9
kΩ
Common Mode Rejection
Ratio
20Hz to
20kHz
CMRR
55
dB
Minimum PGA Gain
Setting
-12
+12
0.5
dB
dB
dB
Maximum PGA Gain
Setting
PGA Gain Step Size
Guaranteed monotonic
PP, April 2011, Rev 3.2
13
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
