LTC1591 Linear Technology Corporation, LTC1591 Datasheet - Page 11

• Manufacturer Part Number: LTC1591
• Description: Ltc1591 - 14-bit Parallel Low Glitch Multiplying Dac With 4-quadrant Resistors
• Manufacturer: Linear Technology Corporation

BLOCK DIAGRA
Table 1
TRUTH TABLE
CONTROL INPUTS
CLR
R
0
1
1
1
1
1
REF
COM
V
WR
R1 3
LD
CC
23
1
2
8
9
WR
X
0
1
0
1
12k
12k
LD
X
0
1
1
0
48k
REGISTER OPERATION
Reset Input and DAC Register to All 0s for LTC1591/LTC1597 and Midscale for LTC1591-1/LTC1597-1 (Asynchronous Operation)
Load Input Register with All 14/16 Data Bits
Load DAC Register with the Contents of the Input Register
Input and DAC Register Are Transparent
CLK = LD and WR Tied Together. The 14/16 Data Bits Are Loaded into the Input Register on the Falling Edge of the CLK and Then
Loaded into the DAC Register on the Rising Edge of the CLK
No Register Operation
48k
W
SM
48k
LOAD
DECODER
(MSB)
D13
48k
D13
WR
10
D12
48k
11
D12
48k
LTC1591
D11
DAC REGISTER
• • • •
INPUT REGISTER
48k
D10
96k
21
D2
48k
D1
24
D9
96k
25
D0
• • •
48k
LTC1591/LTC1597
NC
26
(LSB)
D0
96k
RST
RST
NC
27
96k
12k
12k
11
22
28
4
5
6
7
1591 BD
R
R
DGND
CLR
15917fa
I
AGND
OUT1
FB
OFS