Rainbow Electronics MAX13331 - Manual (Page 7)

MAX13330/MAX13331
Automotive DirectDrive Headphone Amplifiers
with Output Protection and Diagnostics
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Pin Description
Typical Operating Characteristics (continued)
(V DD = V CPVDD = 5V, V SGND = V PGND = 0, C1 = C2 = 1µF, R L = ∞, gain = -1.5V/V, THD+N measurement bandwidth = 22Hz to 22kHz,
T A = +25°C, unless otherwise noted.)
PIN NAME FUNCTION
1 INL Inverting Left-Channel Audio Input
2, 4 SGND
Amplifier Signal Ground. The noninverting inputs of the amplifiers are connected to the amplifier
signal ground. Connect both to the signal ground plane.
3 INR Inverting Right-Channel Audio Input
5 V DD
Amplifier Positive-Power Supply. Connect to positive supply. Bypass with a 1µF capacitor to
SGND as close to the pin as possible.
6
SHDN
Active-Low Shutdown Input
7 CPVDD
Charge-Pump Power Supply. Powers charge-pump inverter, charge-pump logic, and oscillator.
Connect to positive supply. Bypass with a 1µF capacitor to PGND as close to the pin as possible.
8 C1P Flying-Capacitor Positive Terminal. Connect a 1µF capacitor between C1P and C1N.
9, 15 PGND Power Ground. Connect both to the power ground plane.
10 C1N Flying-Capacitor Negative Terminal. Connect a 1µF capacitor between C1P and C1N.
11 CPVSS Charge-Pump Output. Connect to V SS and bypass with a 1µF capacitor to PGND.
12 DIAG Diagnostic Voltage Output
13 OUTR Right-Channel Output
14 V SS Amplifier Negative Power Supply. Connect to CPVSS.
16 OUTL Left-Channel Output
ENTERING SHUTDOWN TRANSIENT
MAX13330/31 toc27
200 μs/div
OUTL
1V/div
OUTR
1V/div
SHDN
5V/div
POWER-UP/-DOWN TRANSIENT
MAX13330/31 toc28
10ms/div
OUTL
1V/div
OUTR
1V/div
SHDN
5V/div