LTC1667 Linear Technology Corporation, LTC1667 Datasheet - Page 9

• Manufacturer Part Number: LTC1667
• Description: Ltc1667 - 12-bit, 14-bit, 16-bit, 50msps Dac
• Manufacturer: Linear Technology Corporation

BLOCK DIAGRA
0.1 F
0.1 F
0.1 F
0.1 F
V
V
REF
REF
R
2k
R
2k
SET
0.1 F
SET
0.1 F
15
16
21
22
15
16
21
22
–5V
–5V
W
REFOUT
I
COMP1
COMP2
REFOUT
I
COMP1
COMP2
REFIN
REFIN
+
–
+
–
23
23
V
V
SS
0.1 F
SS
0.1 F
REFERENCE
REFERENCE
2.5V
AGND
2.5V
AGND
17
17
I
I
INT
INT
DGND
DGND
I
I
FS
FS
24
24
/8
/8
CLOCK
INPUT
CLOCK
INPUT
26
CLK
26
CLK
LSB SWITCHES
LSB SWITCHES
ATTENUATOR
ATTENUATOR
LTC1666
LADDER
LTC1667
LADDER
V
DB11
V
DB13
5V
5V
DD
DD
25
CURRENT SOURCE ARRAY
25
CURRENT SOURCE ARRAY
INPUT LATCHES
INPUT LATCHES
DATA INPUT
DATA INPUT
• • •
• • •
27
27
12-BIT
14-BIT
• • •
• • •
• • •
• • •
0.1 F
0.1 F
SEGMENTED SWITCHES
SEGMENTED SWITCHES
LTC1666/LTC1667/LTC1668
FOR DB15–DB12
DB0
10
12
FOR DB15–DB12
DB0
• • •
• • •
LADCOM
LADCOM
I
I
I
I
OUT A
OUT B
OUT A
OUT B
1666
1667
BD
BD
18
20
19
18
20
19
52.3
52.3
52.3
52.3
+
–
+
–
V
1V
DIFFERENTIAL
V
1V
DIFFERENTIAL
OUT
OUT
P-P
P-P
9