CS43L22 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CS43L22' PDF : 66 Pages View PDF
Confidential Draft
3/4/10
CS43L22
Parameters (Note 7)
Symbol
Conditions
Min Typ Max Units
MOSFET On Resistance
Efficiency
RDS(ON)
VP = 2.5V, Id = 0.5 A
-
760
-
mΩ
η
VP = 5.0 V, PO = 2 x 0.8 W, RL =
-
81
-
%
8Ω
Output Operating Peak Current
VP Input Current During Reset
IPC
-
-
1.5
A
IVP
RESET, pin 32, is held low
-
0.8
5.0 µA
6. The PWM driver should be used in captive speaker systems only.
7. Optimal PWM performance is achieved when MCLK > 12 MHz.
HEADPHONE OUTPUT POWER CHARACTERISTICS
Test conditions (unless otherwise specified): Input test signal is a full-scale 997 Hz sine wave; Sample Frequency = 48 kHz;
Measurement Bandwidth is 20 Hz to 20 kHz; Test load RL = 16 Ω, CL = 10 pF (see Figure 2); “Required Initialization Settings”
on page 32 written on power up.
Parameters
VA = 2.5V
Min
Typ
Max
VA = 1.8V
Unit
Min
Typ
Max
AOUTx Power Into RL = 16 Ω
HP_GAIN[2:0] Analog
Gain (G)
VHP
000
001
010
011 (default)
100
101
0.3959
0.4571
0.5111
0.6047
0.7099
0.8399
1.8 V
2.5 V
1.8 V
2.5 V
1.8 V
2.5 V
1.8 V
2.5 V
1.8 V
2.5 V
1.8 V
-
14
-
-
14
-
-
19
-
-
19
-
-
23
-
-
23
-
(Note 8)
-
32
-
(Note 8)
-
44
-
-
7
-
-
7
-
-
10
-
-
10
-
-
12
-
-
12
-
-
17
-
-
17
-
-
23
-
-
23
-
(Note 4) See Figure 18 on
page 59
mWrms
mWrms
mWrms
mWrms
mWrms
mWrms
mWrms
mWrms
mWrms
mWrms
mWrms
2.5 V
110
1.0000
1.8 V
2.5 V
111
1.1430
1.8 V
2.5 V
-
32
-
(Note 4, 8) See Figures 18 and 19 on page 59
mWrms
mWrms
mWrms
mWrms
mWrms
8. VHP settings lower than VA reduces the headroom of the headphone amplifier. As a result, the DAC
may not achieve the full THD+N performance at full-scale output voltage and power.
AOUTx
51 Ω
CL
RL
0.022 μF
AGND
Figure 2. Headphone Output Test Load
14
DS792F2
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