WM8985GEFL Wolfson Microelectronics, WM8985GEFL Datasheet - Page 8

• Manufacturer Part Number: WM8985GEFL
• Description: Audio CODECs Multimedia CODEC with Class D HP
• Manufacturer: Wolfson Microelectronics

Specifications of WM8985GEFL

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8985
w
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD=1.8V, AVDD1=AVDD2=DBVDD=3.3V, T
PARAMETER
Microphone Input PGA Inputs (LIP, LIN, RIP, RIN, L2, R2)
INPPGAVOLL, INPPGAVOLR, PGABOOSTL and PGABOOSTR = 0dB
Full-scale Input Signal Level –
Single-ended input via LIN/RIN
Full-scale Input Signal Level –
Pseudo-differential input
Input PGA equivalent input noise
LIN, RIN input resistance
LIN, RIN input resistance
LIN, RIN input resistance
LIP, RIP input resistance
L2, R2 input resistance
L2, R2 input resistance
L2, R2 input resistance
L2, R2 input resistance
Input Capacitance
Maximum Input PGA Programmable
Gain
Minimum Input PGA Programmable
Gain
Programmable Gain Step Size
Input PGA Mute Attenuation
Input Gain Boost
Input Gain Boost
1,2
1
SYMBOL
A
= +25
INPPGAVOLL/R = +35.25dB
INPPGAVOLR = +35.25dB
R2_2BOOSTVOL = -12dB
R2_2BOOSTVOL = +6dB
R2_2BOOSTVOL = 0dB
R2_2BOOSTVOL = 000
INPPGAVOLR = -12dB
All analogue input pins
Guaranteed monotonic
L2_2BOOSTVOL and
L2_2BOOSTVOL and
L2_2BOOSTVOL and
L2_2BOOSTVOL and
INPPGAVOLR = 0dB
INPPGAMUTEL and
INPPGAMUTER = 1
o
TEST CONDITIONS
INPPGAVOLL and
INPPGAVOLL and
INPPGAVOLL and
INPPGAVOLL and
INPPGAVOLL and
PGABOOSTL and
PGABOOSTR = 0
PGABOOSTL and
PGABOOSTR = 1
C, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated.
L2_2INPPGA and
L2_2INPPGA and
L2_2INPPGA and
L2_2INPPGA and
R2_2INPPGA = 1
R2_2INPPGA = 0
R2_2INPPGA = 0
R2_2INPPGA = 0
Gain adjusted by
Gain adjusted by
All gain settings
No input signal
INPPGAVOLL
INPPGAVOLL
0 to 20kHz
MIN
AVDD*0.7/
AVDD/3.3
+35.25
0.75
TYP
150
3.3
1.6
-12
100
+20
46
71
90
90
11
22
60
10
0
PD, Rev 4.6, July 2009
MAX
Production Data
UNIT
V
V
μV
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
pF
dB
dB
dB
dB
dB
dB
rms
rms
8