Datasheet
DAC2902
4
SBAS167C
www.ti.com
PIN DESIGNATOR DESCRIPTION
1-12 D[11:0]_1 Data Port DAC1, Data Bit 11 (MSB) to Bit 0 (LSB).
13, 14 NC No Connection
15 DGND Digital Ground
16 +V
D
Digital Supply, +3.0V to +5.5V
17 WRT1 DAC1 Input Latches Write Signal
18 CLK1 Clock Input DAC1
19 CLK2 Clock Input DAC2
20 WRT2 DAC2 Input Latches Write Signal
21 DGND Digital Ground
22 +V
D
Digital Supply, +3.0V to +5.5V
23-34 D[11:0]_2 Data Port DAC2, Data Bit 11 (MSB) to Bit 0 (LSB).
35, 36 NC No Connection
37 PD
Power-Down Function Control Input;
H
= DAC in power-down mode;
L
= DAC in normal operation (Internal pull-down for default “L”).
38 AGND Analog Ground
39 I
OUT
2 Current Output DAC2. Full-scale with all bits of data port 2 HIGH.
40 I
OUT
2 Complementary Current Output DAC2. Full-scale with all bits of data port 2 LOW.
41 FSA2 Full-Scale Adjust, DAC2. Connect External R
SET
Resistor.
42 GSET Gain-Setting Mode (H = 1 Resistor, L = 2 Resistor)
43 REF
IN
Internal Reference Voltage output; External Reference Voltage input. Bypass with 0.1µF to AGND for internal reference
operation.
44 FSA1 Full-Scale Adjust, DAC1. Connect External R
SET
Resistor
45 I
OUT
1 Complementary Current Output DAC1. Full-scale with all bits of data port 1 LOW.
46 I
OUT
1 Current Output DAC1. Full-scale with all bits of data port 1 HIGH.
47 +V
A
Analog Supply, +3.0V to +5.5V
48 NC No Connection
PIN DESCRIPTIONS
PIN CONFIGURATION
Top View TQFP-48
36
35
34
33
32
31
30
29
28
27
26
25
1
2
3
4
5
6
7
8
9
10
11
12
48 47 46 45 44 43 42 41 40 39 38
13 14 15 16 17 18 19 20 21 22 23
37
24
DAC2902
NC
NC
D0_2
D1_2
D2_2
D3_2
D4_2
D5_2
D6_2
D7_2
D8_2
D9_2
NC
+V
A
I
OUT
1
I
OUT
1
FSA
REF
IN
GSET
FSA2
I
OUT
2
I
OUT
2
AGND
PD
NC
NC
DGND
+V
D
WRT1
CLK1
CLK2
WRT2
DGND
+V
D
D11_2 (MSB)
D10_2
D11_1 (MSB)
D10_1
D9_1
D8_1
D7_1
D6_1
D5_1
D4_1
D3_1
D2_1
D1_1
D0_1