5V, Differential Input, DirectDrive, 130mW
Stereo Headphone Amplifiers with Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(PV
= SV
= +5V, PGND = SGND = 0V, SHDN = SV , C1 = C2 = 1µF, R = ∞, resistive load referenced to ground, for
DD
DD DD L
MAX9722A gain = -1V/V (R = R = 10kΩ), for MAX9722B gain = -2V/V (internally set), T = -40°C to +85°C, unless otherwise noted.
Typical values are at T = +25°C, unless otherwise noted.) (Note 1)
IN
F
A
A
PARAMETER
SYMBOL
THD+N
SNR
CONDITIONS
MIN
TYP
0.03
0.009
100
MAX UNITS
R = 16Ω, P
= 55mW, f = 1kHz
= 125mW, f = 1kHz
L
OUT
OUT
OUT
Total Harmonic Distortion Plus
Noise (Note 4)
%
R = 32Ω, P
L
Signal-to-Noise Ratio
R = 32Ω, P
L
= 20mW, f = 22Hz to 22kHz
dB
Noise
V
22Hz to 22kHz bandwidth, input AC grounded
6
µV
RMS
n
Slew Rate
SR
0.5
V/µs
Maximum Capacitive Load
C
No sustained oscillation
200
pF
L
Charge-Pump Oscillator
Frequency
f
505
600
800
kHz
OSC
Crosstalk
R = 32Ω, V = 200mV , f = 10kHz, A = 1
78
8
dB
kV
°C
°C
L
IN
P-P
V
ESD Protection
Human Body Model (OUTR and OUTL)
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
145
5
Note 1: All specifications are 100% tested at T = +25°C; temperature limits are guaranteed by design.
A
Note 2: Gain for the MAX9722A is adjustable.
Note 3: The amplifier inputs are AC-coupled to ground through C _.
IN
Note 4: Measurement bandwidth is 22Hz to 22kHz.
Typical Operating Characteristics
(MAX9722A, PV
= SV
= +5V, PGND = SGND = 0V, SHDN = SV , C1 = C2 = 1µF, R = ∞, gain = -1V/V, single-ended input,
DD DD L
DD
THD+N measurement bandwidth = 22Hz to 22kHz, T = +25°C, unless otherwise noted.)
A
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10
1
10
1
10
1
V
A
= 3V
= -1V/V
V
A
= 3V
= -1V/V
V
A
= 5V
DD
DD
V
L
DD
V
L
= -1V/V
V
R = 16Ω
R = 32Ω
R = 16Ω
L
P
= 5mW
OUT
P
= 5mW
P
= 5mW
OUT
OUT
P
= 15mW
OUT
0.1
0.1
0.1
0.01
P
= 60mW
OUT
P
= 20mW
OUT
0.01
0.001
0.0001
0.01
0.001
0.0001
P
= 40mW
OUT
P
= 30mW
OUT
P
= 40mW
1k
0.001
OUT
0.0001
10
100
1k
FREQUENCY (Hz)
10k
100k
10
100
10k
100k
10
100
1k
FREQUENCY (Hz)
10k
100k
FREQUENCY (Hz)
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
