TLC5628C_15 Datasheet, PDF (2/17 Pages) Texas Instruments – OCTAL 8-BIT DIGITAL-TO-ANALOG CONVERTERS

TLC5628C, TLC5628I
OCTAL 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS089E – NOVEMBER 1994 – REVISED APRIL 1997
functional block diagram
REF1 ¹⁴ ₊
–
9
Latch
DAC
Latch
8
×2
+
–
2
DACA
REF2 ¹¹ ₊
–
Latch
Latch
DAC
Latch
8
×2
DAC
Latch
8
×2
+
–
15
DACD
+
7
–
DACE
CLK ⁵
DATA ⁴
LOAD ¹²
Latch
Latch
Serial
Interface
13
LDAC
DAC
8
×2
Power-On
Reset
+
10
–
DACH
Terminal Functions
TERMINAL
NAME NO.
CLK
5
DACA
2
DACB
1
DACC
16
DACD
15
DACE
7
DACF
8
DACG
9
DACH
10
DATA
4
GND
3
LDAC
13
LOAD
12
REF1
14
REF2
11
VDD
6
I/O
DESCRIPTION
I Serial interface clock. The input digital data is shifted into the serial interface register on the falling edge of the clock
applied to the CLK terminal.
O DAC A analog output
O DAC B analog output
O DAC C analog output
O DAC D analog output
O DAC E analog output
O DAC F analog output
O DAC G analog output
O DAC H analog output
I Serial interface digital data input. The digital code for the DAC is clocked into the serial interface register serially.
Each data bit is clocked into the register on the falling edge of the clock signal.
I Ground return and reference terminal
I Load DAC. When LDAC is high, no DAC output updates occur when the input digital data is read into the serial
interface. The DAC outputs are only updated when LDAC is taken from high to low.
I Serial interface load control. When LDAC is low, the falling edge of the LOAD signal latches the digital data into
the output latch and immediately produces the analog voltage at the DAC output terminal.
I Reference voltage input to DAC ABCD. This voltage defines the analog output range.
I Reference voltage input to DAC EFGH. This voltage defines the analog output range.
I Positive supply voltage
2
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265