SSM2319
TYPICAL APPLICATION CIRCUITS
EXTERNAL GAIN SETTINGS = 160kΩ/(40kΩ + R
EXT
)
10µF
0.1µF
VBATT
2.5V TO 5.5V
VDD
OUT+
MODULATOR
(Σ-Δ)
FET
DRIVER
OUT–
SSM2319
0.1µF*
AUDIO IN–
AUDIO IN+
0.1µF*
R
EXT
R
EXT
IN–
IN+
40kΩ
40kΩ
160kΩ
160kΩ
SHUTDOWN
SD
BIAS
INTERNAL
OSCILLATOR
POP/CLICK
SUPPRESSION
SYNC
SYNC OUTPUT
SYNCO
GND SYNCI
*INPUT CAPACITORS ARE OPTIONAL IF INPUT DC COMMON-MODE
VOLTAGE IS APPROXIMATELY V
DD
/2.
Figure 32. Differential Input Configuration, User-Adjustable Gain
EXTERNAL GAIN SETTINGS = 160kΩ/(40kΩ + R
EXT
)
10µF
0.1µF
VBATT
2.5V TO 5.5V
VDD
OUT+
MODULATOR
(Σ-Δ)
FET
DRIVER
OUT–
SSM2319
0.1µF
R
EXT
R
EXT
0.1µF
IN–
IN+
40kΩ
40kΩ
160kΩ
AUDIO IN+
160kΩ
SHUTDOWN
SD
BIAS
INTERNAL
OSCILLATOR
GND
POP/CLICK
SUPPRESSION
SYNC
SYNCI
07550-033
SYNCO
SYNC OUTPUT
SYNC INPUT
Figure 33. Single-Ended Input Configuration, User-Adjustable Gain
Rev. 0 | Page 12 of 20
07550-032
SYNC INPUT
AD [ ANALOG DEVICES ]
