SSM2356 datasheet(3/16 Pages) AD

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Data Sheet

SSM2356

Rev. A | Page 3 of 16

SPECIFICATIONS

VDD = 5.0 V, TA = 25oC, RL = 8 Ω +33 μH, EDGE = GND, Gain = 6 dB, unless otherwise noted.

Table 1.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

DEVICE CHARACTERISTICS

Output Power/Channel

RL = 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V

1.42

RL = 8 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V

0.75

RL = 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V

1.8

RL = 8 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V

0.94

RL = 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V

2.0

RL = 4 Ω, THD = 1%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V

1.3

RL = 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 5.0 V

2.51

RL = 4 Ω, THD = 10%, f = 1 kHz, 20 kHz BW, VDD = 3.6 V

1.7

Efficiency

PO = 1.4 W, 8 Ω, VDD = 5.0 V, EDGE = GND

(normal, low EMI mode)

PO = 1.4 W, 8 Ω, VDD = 5.0 V, EDGE = VDD

(ultralow EMI mode)

Total Harmonic Distortion + Noise

THD + N

PO = 1 W into 8 Ω, f = 1 kHz, VDD = 5.0 V

0.004

PO = 0.5 W into 8 Ω, f = 1 kHz, VDD = 3.6 V

0.004

Input Common-Mode Voltage Range

VCM

1.0

VDD − 1

Common-Mode Rejection Ratio

CMRRGSM

VCM = 2.5 V ± 100 mV at 217 Hz, output referred

Channel Separation

XTALK

PO = 100 mW, f = 1 kHz

Average Switching Frequency

fSW

300

kHz

Differential Output Offset Voltage

VOOS

Gain = 6 dB

2.0

POWER SUPPLY

Supply Voltage Range

VDD

Guaranteed from PSRR test

2.5

5.5

Power Supply Rejection Ratio

PSRR

(DC)

VDD = 2.5 V to 5.0 V, dc input floating

PSRRGSM

VRIPPLE = 100 mV at 217 Hz, inputs ac GND, CIN = 0.1 µF

Supply Current (stereo)

ISY

VIN = 0 V, no load, VDD = 5.0 V

5.75

VIN = 0 V, no load, VDD = 3.6 V

4.9

VIN = 0 V, no load, VDD = 2.5 V

4.7

VIN = 0 V, load = 8 Ω + 33 µH, VDD = 5.0 V

5.5

VIN = 0 V, load = 8 Ω + 33 µH, VDD = 3.6 V

5.1

VIN = 0 V, load = 8 Ω + 33 µH, VDD = 2.5 V

4.5

Shutdown Current

ISD

SDNR = SDNL= GND

GAIN CONTROL

Closed-Loop Gain

Gain

GAIN = VDD

Gain

GAIN = GND

Input Impedance

ZIN

SDNR = SDNL = VDD; GAIN = GND or VDD

kΩ

SHUTDOWN CONTROL

Input Voltage High

VIH

1.35

Input Voltage Low

VIL

0.35

Turn-On Time

tWU

SDNR/SDNL rising edge from GND to VDD

Turn-Off Time

tSD

SDNR/SDNL falling edge from VDD to GND

µs

Output Impedance

ZOUT

SDNR/SDNL = GND

>100

kΩ

NOISE PERFORMANCE

Output Voltage Noise

VDD = 3.6 V, f = 20 Hz to 20 kHz, inputs are ac grounded,

Gain = 6 dB, A-weighted

µVrms

Signal-to-Noise Ratio

SNR

PO = 1.4 W, RL = 8 Ω

100

Note that, although the SSM2356 has good audio quality above 2 W per channel, continuous output power beyond 2 W per channel must be avoided due to device

packaging limitations.

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