Max9700, 2w, low-emi, filterless, class d audio amplifier, Ucsp applications information – Rainbow Electronics MAX9700 User Manual
Page 14: Ordering information (continued), Selector guide
MAX9700
One solution is the configuration shown in Figure 10b.
The potentiometer is connected between the differential
inputs, and these “see” identical RC paths when the
device powers up. The variable resistive element
appears between the two inputs, meaning the setting
affects both inputs the same way. The potentiometer is
audio taper, as in Figure 10a. This significantly
improves transient performance on power-up or release
from SHDN. A similar approach can be applied when
the MAX9700 is driven differentially and a volume con-
trol is required.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, PC board tech-
niques, bump-pad layout, and recommended reflow tem-
perature profile, as well as the latest information on
reliability testing results, refer to the Application Note:
UCSP—A Wafer-Level Chip-Scale Package available on
Maxim’s website at www.maxim-ic.com/ucsp.
1.2W, Low-EMI, Filterless,
Class D Audio Amplifier
14
______________________________________________________________________________________
Figure 10a. Single-Ended Drive of MAX9700 Plus Volume
IN+
1
µF
1
µF
MAX9700
IN-
CW
50k
Ω
IN+
MAX9700
IN-
1
µF
1
µF
CW
22k
Ω
50k
Ω
22k
Ω
Figure 10b. Improved Single-Ended Drive of MAX9700 Plus
Volume
Ordering Information (continued)
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX9700CETB*
-40
o
C to +85
o
C
10 TDFN
ACN
MAX9700CEUB*
-40
o
C to +85
o
C
10 µMAX
—
MAX9700CEBC-T*
-40
o
C to +85
o
C
12 UCSP-12
—
MAX9700DETB*
-40
o
C to +85
o
C
10 TDFN
ACO
MAX9700DEUB*
-40
o
C to +85
o
C
10 µMAX
—
MAX9700DEBC-T*
-40
o
C to +85
o
C
12 UCSP-12
—
Selector Guide
PART
PIN-PACKAGE
GAIN (dB)
MAX9700AETB
10 TDFN
6
MAX9700AEUB
10 µMAX
6
MAX9700AEBC-T
12 UCSP-12
6
MAX9700BETB
10 TDFN
12
MAX9700BEUB
10 µMAX
12
MAX9700BEBC-T
12 UCSP-12
12
MAX9700CETB
10 TDFN
15.6
MAX9700CEUB
10 µMAX
15.6
MAX9700CEBC-T
12 UCSP-12
15.6
MAX9700DETB
10 TDFN
20
MAX9700DEUB
10 µMAX
20
MAX9700DEBC-T
12 UCSP-12
20
*Future Product—contact factory for availability.