TDA1543 데이터 시트보기 (PDF) - Philips Electronics
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TDA1543 Datasheet PDF : 13 Pages
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Philips Semiconductors
Dual 16-bit DAC (economy version)
(I2S input format)
Product specification
TDA1543
FUNCTIONAL DESCRIPTION
The TDA1543 accepts input serial data formats in two's complement with any bit length. Left and right data words are
time multiplexed. The most significant bit (bit 1) must always be first. The format of data input is shown in Fig.5 and Fig.6.
This flexible input data format (I2S) allows easy interfacing with signal processing chips such as interpolation filters, error
correction circuits and audio signal processor circuits (ASP).
The high maximum input bit-rate and fast settling current facilitates application in 4 × oversampling systems. An
adjustable current is added to the output currents to bias output operational amplifiers (OP1; OP2) for maximum dynamic
range (see Fig.1).
With a LOW level on the word select (WS) input data is placed in the left input register and with a HIGH level on the WS
input data is placed in the right input register. The data in the input registers is simultaneously latched in the output
registers which control the bit switches.
The output current of the DAC is a sink current. The current Iref at the Vref output is adjusted by a resistor or a current
source. The current Iref is amplified with gain AIbias to the bias currents (IBL; IBR) which are added to the output currents.
LIMITING VALUES
In accordance with the Absolute Maximum System (lEC 134)
SYMBOL
VDD
TXTAL
Tstg
Tamb
Ves
PARAMETER
supply voltage range
crystal temperature
storage temperature range
operating ambient temperature
range
electrostatic handling*
CONDITIONS
MIN.
0
−
−55
−30
MAX.
9
+150
+150
+85
UNIT
V
°C
°C
°C
−2000 +2000 V
THERMAL RESISTANCE
SYMBOL
Rth j-a
from junction to ambient
PARAMETER
* Equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.
TYP.
100
UNIT
K/W
February 1991
6
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