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WM9090ECS/R Scheda tecnica(PDF) 8 Page - Wolfson Microelectronics plc

Il numero della parte WM9090ECS/R
Spiegazioni elettronici  Ultra Low Power Audio Subsystem
PDF  81 Pages
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Produttore elettronici  WOLFSON [Wolfson Microelectronics plc]
Homepage  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9090ECS/R Scheda tecnica(HTML) 8 Page - Wolfson Microelectronics plc

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WM9090
Production Data
w
PD, November 2010, Rev 4.1
8
Test Conditions
SPKVDD = 3.6V, AVDD=1.8V, GND=0V, TA = +25
oC, 1kHz signal, PGA gain = 0dB unless otherwise stated
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Speaker Driver Class D Audio Performance (RL=8
Ω + 10μH BTL)
SNR (A-weighted)
Speaker Boost = 6dB,
82
92
dB
THD (PO=500mW)
Speaker Boost = 6dB
-75
dB
THD+N (PO=500mW)
Speaker Boost = 6dB
-73
dB
PSRR
AVDD with 100mVpk-pk at 217Hz (Note 1)
75
dB
SPKVDD with 100mVpk-pk at 217Hz
70
dB
DC Offset at Load
5
mV
Efficiency
Speaker Boost = 6dB, 0dBFS input
80
89
%
Output Power
SPKVDD=5.0V, THD+N ≤ 1%,
Speaker Boost = 12dB
1300
mW
SPKVDD=4.2V, THD+N ≤ 1%,
Speaker Boost = 12dB
950
mW
SPKVDD=3.7V, THD+N ≤ 1%,
Speaker Boost = 12dB
750
mW
Quiescent Current
3
mA
Leakage Currents
SVDD Leakage Current
0.2
μA
HPVDD Leakage Current
VMID_ENA = 0, VMID_BUF_ENA = 0, and
TSHUT_ENA = 0
1
μA
Analogue Reference Level
VMID Midrail Reference Voltage
-3%
AVDD/2
+3%
V
Charge Pump
Start-up Time
500
μs
Supply Voltage
1.71
2.0
V
CPVOUTP
Normal mode
AVDD
V
Low power mode
AVDD/2
CPVOUTN
Normal mode
-AVDD
V
Low power mode
-AVDD/2
Flyback Capacitor
(between CPCA and CPCB)
at 2V
1
2.2
μF
CPVOUTP Capacitor
at 2V
2
2.2
μF
CPVOUTN Capacitor
at 2V
2
2.2
μF
Digital Input / Output
Input HIGH Level
0.7
×
AVDD
V
Input LOW Level
0.3
×
AVDD
V
Output HIGH Level
IOL = 1mA
0.7
×
AVDD
V
Output LOW Level
IOH = -1mA
0.3
×
AVDD
V
Input capacitance
10
pF
Input leakage
-0.9
0.9
uA
Start-Up Time
Start up time
Speaker and Headphone
-35
ms
Note 1: Total system PSRR with external DC-DC or LDO will be higher



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