TDA1541 Philips Semiconductors, TDA1541 Datasheet - Page 5

• Manufacturer Part Number: TDA1541
• Description: Dual 16-bit DAC
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FUNCTIONAL DESCRIPTION
The TDA1541 accepts input sample formats in time multiplexed mode or simultaneous mode with any bit length.
The most significant bit (MSB) must always be first. This flexible input data format allows easy interfacing with signal
processing chips such as interpolation filters, error correction circuits, pulse code modulation adaptors and audio signal
processors (ASP).
The high maximum input bit-rate and fast settling time facilitates application in 4
176,4 kHz) with the associated simple analogue filtering function (low order, linear phase filter).
Input data selection (see also Table 1)
With input OB/TWC connected to ground, data input (offset binary format) must be in time multiplexed mode. It is
accompanied with a word select (WS) and a bit clock input (BCK) signal. A separate system clock input (SCK) is provided
for accurate, jitter-free timing of the analogue outputs AOL and AOR.
With OB/TWC connected to V
When input OB/TWC is connected to (V
(DATA R), accompanied with BCK and a latch-enable input (LE). With this mode selected the data must be in offset
binary.
The format of data input signals is shown in figures 3, 4 and 5.
True 16-bit performance is achieved by each channel using three 2-bit active dividers, operating on the dynamic element
matching principle, in combination with a 10-bit passive current-divider, based on emitter scaling. All digital inputs are
TTL compatible.
Input data selection
November 1985
0 V
+5 V
Where:
LE
WS
BCK
DATA L
DATA R
DATA OB
DATA TWC
MUX OB
MUX TWC
5 V
Dual 16-bit DAC
OB/TWC
simultaneous
time MUX OB
time MUX TWC
= latch enable
= word select
= bit clock
= data left
= data right
= data offset binary
= data two’s complement
= multiplexed offset binary
= multiplexed two’s complement
DD
MODE
the mode is the same but data format must be in two’s complement.
DD1
) the two channels of data (L/R) are input simultaneously via (DATA L) and
LE
WS
WS
5
PIN 1
BCK
BCK
BCK
PIN 2
oversampling systems (44,1 kHz to
DATA L
DATA OB
DATA TWC
PIN 3
Product specification
TDA1541
DATA R
SCK
SCK
PIN 4