Datasheet

5Maxim Integrated
Differential Input DirectDrive
Line Drivers/Headphone Amplifiers
MAX97220A–MAX97220E
Note 2: 100% production tested at T
A
= +25NC. Specifications over temperature limits are guaranteed by design.
Note 3:
Dynamic specifications are taken over 2.5V to 5.5V supply range. Inputs AC-coupled to PGND.
Note 4: The maximum differential input signal does not cause any excess distortion due to violation of the common-mode input
range.
Note 5: Test performed with a resistive load connected to PGND. Mode transitions are controlled by SHDN. KCP level is calcu-
lated as 20 x log (peak voltage during mode transition, no input signal).
Typical Operating Characteristics
(V
PVDD
= V
SVDD
= V
SVDD2
= 5V, V
PGND
= V
SGND
= 0V, C
BIAS
= 0.1µF, C1 = C2 = 1µF, R
IN
= 10kω, R
F
= 10kω, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)
(V
PVDD
= V
SVDD
= V
SVDD2
= 5V, V
PGND
= V
SGND
= 0V, C
BIAS
= 0.1µF, C1 = C2 = 1µF, R
IN
= 20kω, R
F
= 20kω (MAX97220A/
MAX97220B/MAX97220E), typical values tested at T
A
= +25°C, unless otherwise noted.) (Notes 2 and 3)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX97220 toc01
FREQUENCY (kHz)
THD+N (dB)
1010.1
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-120
0.01 100
V
PVDD
= 3.3V
R
L
= 600I
BW = 22Hz TO 22kHz
V
OUT
= 1V
RMS
V
OUT
= 2V
RMS
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX97220 toc02
FREQUENCY (kHz)
THD+N (dB)
1010.1
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-120
0.01 100
V
PVDD
= 5V
R
L
= 10kI
BW = 22Hz TO 22kHz
V
OUT
= 1V
RMS
V
OUT
= 3V
RMS
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX97220 toc03
FREQUENCY (kHz)
THD+N (%)
1010.1
0.001
0.01
0.1
1
10
100
0.0001
0.01 100
V
PVDD
= 3.3V
R
L
= 32I
P
OUT
= 30mW
P
OUT
= 10mW
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Click-and-Pop Level (Note 5) KCP
32 samples per second,
A-weighted, R
L
= 10kI,
unity gain
Into shutdown -70
dBV
Out of
shutdown
-70
32 samples per second,
A-weighted, R
L
= 32I,
unity gain
Into shutdown -76
Out of
shutdown
-76
LOGIC INPUT (SHDN)
SHDN Input Logic-High
V
IH
1.4 V
SHDN Input Logic-Low
V
IL
0.4 V
SHDN Input Leakage Current
High
I
IH
T
A
= +25NC
1
FA
SHDN Input Leakage Current Low
I
IL
T
A
= +25NC
1
FA