STEVAL-CCA002V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Thermal and short-circuit protection

STEVAL-CCA002V1
Features
Low voltage differential audio power amplifier
based on the TS4994
Data Brief
■ TS4994 low voltage differential audio power
amplifier with Programmable standby mode
■ Operates from V_CC=2.5 V to 5.5 V
■ 1 W output power @ V_CC=5 V, THD+N=1%,
t(s) ^{F=1 kHz, with 8 W load}
■ Ultra low power consumption in standby mode
uc ^{(10 nA)}
d _{■ 100 dB PSRR @ 217 Hz in grounded mode}
ro (Av=1 V/V)
P _{■ Near zero pop & click}
te _{■ Ultra low distortion (0.1%)}
le _{■ Module gain set at 1V/V}
so _{■ Thermal and short-circuit protection}
- ^{Ob Description}
t(s) ^{This evaluation board is designed with the}
TS4994 low power differential audio amplifier. The
c _{micro-package DFN10 (dual flat non-leaded 10}
u _{pins) allows space saving and good thermal}
rod ^{dissipation. The differential gain is set at 1 V/V}
and can be adapted as necessary through a
P _{modification of the R1 to R4 values.}
lete ^{Equation 1}
o _{Av =} R-----2--= R-----4-- _{with R2 = R4 with R1 = R3}
s_{R1 R3}
Ob^{On the board, you can set the Cn3 and Cn4}
STEVAL-CCA002V1
jumpers can be set to modify the input
configuration from capacitor coupled to common
mode feedback. In capacitor coupled
configuration, the -3dB cut-off frequency in Hz is:
Equation 2
(^{---6---.--2---8-----}⋅^{------R1-----1----}⋅^{------C-----1----}) ⁼ (^{---6---.--2---8-----}⋅^{------R1-----3----}⋅^{------C-----2----})
with R in ohms, C in farads and C1=C2. For more
detailed information about component calculation,
refer to the TS4994 datasheet.
December 2007
Rev 1
For further information contact your local STMicroelectronics sales office.
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