September 1991

4

Philips Semiconductors

Product specification

Dual top-performance bitstream DAC

TDA1547

PINNING

SYMBOL

PIN

DESCRIPTION

DGND

1

0 V digital supply

2

5 V digital supply for both channels

IN R

3

serial one-bit data input for the right channel

n.c.

4

pin not connected; should preferably be connected to digital ground

CLK R

5

clock input for the right channel

6

5 V digital supply for the right channel; this voltage determines the internal logic HIGH level

in the right channel

7

−3.5 V digital supply for the right channel; this voltage determines the internal logic LOW

level in the right channel

8

−4 V reference voltage for the right channel switched capacitor DAC

AGND DAC R

9

0 V reference voltage for the right channel switched capacitor DAC; this pin should be

connected to analog ground

−DAC R

10

output from the right negative switched capacitor DAC; feedback connection for the right

negative operational amplifier

+DAC R

11

output from the right positive switched capacitor DAC; feedback connection for the right

positive operational amplifier

AGND R

12

0 V reference voltage for both right channel operational amplifiers

n.c.

13

pin not connected; should preferably be connected to analog ground

+OUT R

14

+ output of the switched capacitor operational amplifier

−OUT R

15

− output of the switched capacitor operational amplifier

16

−5 V analog supply

17

5 V analog supply

−OUT L

18

− output of the switched capacitor operational amplifier

+OUT L

19

+ output of the switched capacitor operational amplifier

n.c.

20

pin not connected; should preferably be connected to analog ground

AGND L

21

0 V reference voltage for both left channel operational amplifiers

+DAC L

22

output from the left positive switched capacitor DAC; feedback connection for the left

positive operational amplifier

−DAC L

23

output from the left negative switched capacitor DAC; feedback connection for left negative

operational amplifier

AGND DAC L

24

0 V reference voltage for the left channel switched capacitor DAC; this pin should be

connected to analog ground

25

−4 V reference voltage for the left channel switched capacitor DAC

26

−3.5 V digital supply for the left channel; this voltage determines the internal logic LOW level

in the left channel

27

5 V digital supply for the left channel; this voltage determines the internal logic HIGH level in

the left channel