WM8988 Просмотр технического описания (PDF) - Wolfson Microelectronics plc
Номер в каталоге
Компоненты Описание
производитель
WM8988 Datasheet PDF : 56 Pages
| |||
WM8988
Production Data
ELECTRICAL CHARACTERISTICS
Test Conditions
DCVDD = 1.5V, DBVDD = 2.4V, AVDD = HPVDD =2.4V , TA = +25oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio
data unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, RINPUT2) to ADC out
Full Scale Input Signal Level
(for ADC 0dB Input at 0dB Gain)
VINFS
AVDD = 3.3V
AVDD = 2.4V
AVDD = 1.8V
Input Resistance
RIN
L/RINPUT1 to ADC,
PGA gain = 0dB
L/RINPUT1 to ADC,
PGA gain = +30dB
L/RINPUT2 to ADC
PGA gain = 0dB
L/RINPUT2 to ADC
PGA gain = 30dB
Input Capacitance
Signal to Noise Ratio
SNR
AVDD = 3.3V
(A-weighted)
AVDD = 2.4V
AVDD = 1.8V
Total Harmonic Distortion
THD
-1dBFs input,
AVDD = 3.3V
-1dBFS input,
AVDD = 2.4V
-1dBFs input,
AVDD = 1.8V
Total Harmonic Distortion +
Noise
THD+N
-1dBFs input,
AVDD = 3.3V
-1dBFS input,
AVDD = 2.4V
-1dBFs input,
AVDD = 1.8V
ADC Channel Separation
1kHz signal
10kHz signal
Channel Matching
1kHz signal
Analogue Outputs (LOUT1/2, ROUT1/2)
0dB Full scale output voltage
VOUTFS
AVDD = 3.3V
AVDD = 2.4V
AVDD = 1.8V
Mute attenuation
1kHz, full scale signal
Channel Separation
1kHz signal
10kHz signal
PGA Gain range
guaranteed monotonic
PGA step size
MIN
0.95
0.690
0.480
16
1.5
16
1.5
80
80
78
-0.5
0.95
0.690
0.507
+6
0.25
TYP
1.0
0.727
0.545
22
2.8
22
2.8
10
93
88
87
-81
-80
-76
-75
-70
-70
85
85
0.2
1.0
0.727
0.545
90
85
85
1
MAX
1.05
0.763
0.610
-68
-68
-65
-65
-65
-60
+0.5
1.05
0.763
0.583
-67
1.25
UNIT
Vrms
kΩ
pF
dB
dB
dB
dB
dB
Vrms
dB
dB
dB
dB
w
PD, Rev 4.0, October 2008
6
Share Link: 