LTC1595 Linear Technology, LTC1595 Datasheet - Page 7

• Manufacturer Part Number: LTC1595
• Description: Serial 16-Bit Multiplying DACs
• Manufacturer: Linear Technology

BLOCK DIAGRA
Table 1. LTC1596/LTC1596-1 Input Register
TI I G DIAGRA
TRUTH TABLES
STB1 STB2 STB3 STB4
0
0
0
1
X
X
X
W
V
V
CLK
REF
CONTROL INPUTS
CLK INPUT
DD
LD
U
1
8
5
7
0
0
0
X
1
X
X
SRI
LD
X
X
X
1
1
1
0
PREVIOUS
WORD
X
X
X
0
0
0
1
56k
Input Register and SRO Operation
Serial Data Bit on SRI Loaded into Input
Register, MSB First
Data Bit or SRI Appears on SRO Pin
After 16 Clocked Bits
No Input Register Operation
No SRO Operation
56k
W
W
t
DS
MSB
D15
(LTC1595)
56k
(LTC1595)
t
LOAD
DH
DECODER
(MSB)
D15
56k
CLK
D14
56k
D14
56k
INPUT 16-BIT SHIFT REGISTER
D13
DAC REGISTER
Table 2. LTC1596/LTC1596-1 DAC Register
CONTROL INPUTS
CLR
56k
0
1
1
1
LTC1595/LTC1596/LTC1596-1
LD1
D12
X
X
1
0
112k
t
CL
56k
LD2
X
X
1
0
t
D1
SRI
D11
t
CH
112k
DAC Register Operation
Reset DAC Register and Input Register to
All 0s (LTC1596) or to Midscale (LTC1596-1)
(Asynchronous Operation)
No DAC Register Operation
Load DAC Register with the Contents of Input
Register
• • •
56k
(LSB)
D0
LSB
D0
112k
IN
t
LD
t
ASB
112k
7k
1595 TD
6
2
3
4
1595 BD
R
SRI
OUT1
GND
FB
7