WM8850 Datasheet, PDF (24/223 Pages) Wolfson Microelectronics plc – Multi-Channel High Definition Audio CODEC

WM8850
Pre-Production
Test Conditions
AVDD = CPVDD = 5V, DBVDD = 3.3V, DCVDD = 1.8V, T_A = +25^oC, 1kHz signal, fs = 48kHz, 24-bit data unless otherwise stated.
PARAMETER
Analogue References
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
Positive Voltage
Reference
VREFP
0.9 *
AVDD
V
Negative Voltage
Reference
VREFN
0.1 *
AVDD
V
Midrail Voltage Reference
VMID
0.5 *
AVDD
V
Charge Pump Cap Level
CPCAP
3.15
V
Midrail Voltage
Resistance
R_VMID
Digital Input / Output
Input High Level
V_IH
Input Low Level
V_IL
Output High Level
V_OH
Output Low Level
V_OL
AVDD to VMID or VMID to AGND
VMID_SEL[1:0]=00
AVDD to VMID or VMID to AGND
VMID_SEL[1:0]=01
AVDD to VMID or VMID to AGND
VMID_SEL[1:0]=10
AVDD to VMID or VMID to AGND
VMID_SEL[1:0]=11
12.5
kΩ
75
kΩ
37.5
kΩ
375
kΩ
0.65 *
DBVDD
0.9 *
DBVDD
V
0.35 *
DBVDD
V
V
0.1 *
DBVDD
V
Input Capacitance
7.5
pF
Input Leakage
-0.1
+0.1
µA
w
PP, April 2011, Rev 3.2
24