DAC908 Datasheet, PDF (4/23 Pages) Burr-Brown (TI) – 8-Bit, 165MSPS DIGITAL-TO-ANALOG CONVERTER

PIN CONFIGURATION
Top View
SO, TSSOP
(MSB) Bit 1 1
Bit 2 2
Bit 3 3
Bit 4 4
Bit 5 5
Bit 6 6
Bit 7 7
(LSB) Bit 8 8
NC⁽¹⁾ 9
NC⁽¹⁾ 10
NC⁽¹⁾ 11
NC⁽¹⁾ 12
NC⁽¹⁾ 13
NC⁽¹⁾ 14
DAC908
28 CLK
27 +V_D
26 DGND
25 NC⁽¹⁾
24 +V_A
23 BYP
22 I_OUT
21 I_OUT
20 AGND
19 BW
18 FSA
17 REF_IN
16 INT/EXT
15 PD
NOTE: (1) NC pins should be left unconnected or grounded.
PIN DESCRIPTIONS
PIN DESIGNATOR
1
Bit 1
2
Bit 2
3
Bit 3
4
Bit 4
5
Bit 5
6
Bit 6
7
Bit 7
8
Bit 8
9
NC
10
NC
11
NC
12
NC
13
NC
14
NC
15
PD
16
INT/EXT
17
REF_IN
18
FSA
19
BW
20
AGND
21
I_OUT
22
I_OUT
23
BYP
24
+V_A
25
NC
26
DGND
27
+V_D
28
CLK
DESCRIPTION
Data Bit 1 (D7), MSB
Data Bit 2 (D6)
Data Bit 3 (D5)
Data Bit 4 (D4)
Data Bit 5 (D3)
Data Bit 6 (D2)
Data Bit 7 (D1)
Data Bit 8 (D0), LSB
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
Power Down, Control Input; Active
HIGH. Contains internal pull-down circuit;
may be left unconnected if not used.
Reference Select Pin; Internal (= 0) or
External (= 1) Reference Operation.
Reference Input/Ouput. See Applications
section for further details.
Full-Scale Output Adjust
Bandwidth/Noise Reduction Pin:
Bypass with 0.1µF to +V_A for Optimum
Performance.
Analog Ground
Complementary DAC Current Output
DAC Current Output
Bypass Node: Use 0.1µF to AGND
Analog Supply Voltage, 2.7V to 5.5V
No Connection
Digital Ground
Digital Supply Voltage, 2.7V to 5.5V
Clock Input
TYPICAL CONNECTION CIRCUIT
R_SET
+5V
0.1µF
+V_A
DAC908
FSA
REF_IN
0.1µF
+5V
BW
+V_D
Current
Sources
LSB
Switches
Segmented
MSB
Switches
INT/EXT
+1.24V Ref.
AGND
Latches
8-Bit Data Input
CLK
D7.......D0
I_OUT
I_OUT
BYP
0.1µF
50Ω
20pF
50Ω
1:1
20pF
PD
DGND
4
DAC908
SBAS109B