Datasheet
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
DAC2904
D0-2
D1-2
D2_2
D3_2
D4_2
D5_2
D6_2
D7_2
D8_2
D9_2
D10_2
D11_2
NC
D1-1
D0-1
DGND
DGND
WRT1
CLK1
CLK2
WRT2
D13_1(MSB)
D12_1
D11_1
D10_1
D9_1
D8_1
D7_1
D6_1
D5_1
D4_1
D3_1
D2_1
l 1
OUT
FSA2
REF
IN
FSA1
GSET
PD
l 2
OUT
I
OUT
2
I
OUT
1
+V
A
AGND
+V
D
+V
D
D13_2(MSB)
D12_2
DAC2904
SBAS198C –AUGUST 2001–REVISED OCTOBER 2009..............................................................................................................................................
www.ti.com
DEVICE INFORMATION
PFB PACKAGE
TQFP-48
(TOP VIEW)
TERMINAL FUNCTIONS
TERMINAL
NAME NO. DESCRIPTION
D[13:0]_1 1–14 Data port DAC1, data bit 13 (MSB) to bit 0 (LSB)
DGND 15, 21 Digital ground
+V
D
16, 22 Digital supply, +3.0V to +5.5V
WRT1 17 DAC1 input latches write signal
CLK1 18 Clock input DAC1
CLK2 19 Clock input DAC2
WRT2 20 DAC2 input latches write signal
D[13:0]_2 23–36 Data port DAC2, data bit 13 (MSB) to bit 0 (LSB).
PD 37 Power-down function control input. H = DAC in power-down mode; L = DAC in normal operation (internal pull-down for default L).
AGND 38 Analog ground
I
OUT
2 39 Current output DAC2. Full-scale with all bits of data port 2 high.
I
OUT
2 40 Complementary current output DAC2. Full-scale with all bits of data port 2 low.
FSA2 41 Full-scale adjust, DAC2. Connect external R
SET
resistor.
GSET 42 Gain-setting mode (H = one resistor, L = two resistors)
REF
IN
43 Internal reference voltage output; external reference voltage input. Bypass with 0.1μF capacitor to AGND for internal reference operation.
FSA1 44 Full-scale adjust, DAC1. Connect external R
SET
resistor.
I
OUT
1 45 Complementary current output DAC1. Full-scale with all bits of data port 1 low.
I
OUT
1 46 Current output DAC1. Full-scale with all bits of data port 1 high.
+V
A
47 Analog supply, +3.0V to +5.5V
NC 48 No connection
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Product Folder Link(s): DAC2904