wm9001 Wolfson Microelectronics plc, wm9001 Datasheet - Page 13

• Manufacturer Part Number: wm9001
• Description: 1w Dual-mode Class Ab/d Speaker Driver
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
EFFICIENCY
w
100
90
80
70
60
50
40
30
20
10
0
0
AVDD=3.3V, SPKVDD=5.0V, BSEL[2:0]=011 (x1.52)
200
WM9001 Class AB Efficiency
400
CLASS AB
Output Power (mW)
600
Typical Efficiency versus output power curves are provided below for both class AB and class D
modes.
800
1000
Differential Mode
Single-Ended Mode
1200
1400
100
90
80
70
60
50
40
30
20
10
0
0
AVDD=3.3V, SPKVDD=5.0V, BSEL[2:0]=011 (x1.52)
200
WM9001 Class D Efficiency
400
CLASS D
Output Power (mW)
600
800
PP, June 2009, Rev 3.2
1000
Differential Mode
Single-Ended Mode
1200
WM9001
1400
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