wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 13

• Manufacturer Part Number: wm8918
• Description: Ultra Low Power Dac For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

Production Data
CHARGE PUMP
FLL
OTHER PARAMETERS
w
Start-up Time
CPCA
CPCB
External component requirements
To achieve specified headphone output power and performance
Flyback Capacitor
(between CPCA and CPCB)
CPVOUTN Capacitor
CPVOUTP Capacitor
Input Frequency
Lock time
Free-running mode start-up time
Free-running mode frequency
accuracy
VMID Reference
Midrail Reference Voltage
(VMIDC pin)
Charge up time (from fully discharged
to 10% below VMID)
PARAMETER
PARAMETER
PARAMETER
SYMBOL
F
REF
TEST CONDITIONS
External capacitor
FLL_CLK_REF_DIV =
FLL_CLK_REF_DIV =
No reference provided
4.7μF
TEST CONDITIONS
TEST CONDITIONS
Reference supplied
Low power mode
Low power mode
VMID enabled
Normal mode
Normal mode
initially
at 2V
at 2V
at 2V
00
01
MIN
-3%
0.032
0.064
MIN
MIN
1
2
2
AVDD/2
TYP
-CPVDD/2
890
CPVDD/2
-CPVDD
CPVDD
+/-10
+/-30
TYP
TYP
260
100
2.2
2.2
2.2
2
PD, Rev 4.0, September 2010
MAX
+3%
MAX
MAX
13.5
27
WM8918
UNIT
UNIT
UNIT
MHz
MHz
μF
μF
μF
ms
μs
μs
μs
V
V
V
V
V
%
%
13