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DAC7802L Datasheet(PDF) 6 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation.
Part # DAC7802L
Description  Dual Monolithic CMOS 12-Bit Multiplying DIGITAL-TO-ANALOG CONVERTERS
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Manufacturer  BURR-BROWN [Burr-Brown (TI)]
Direct Link  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

DAC7802L Datasheet(HTML) 6 Page - Burr-Brown (TI)

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6
®
DAC7800, 01, 02
CK
DAC B
DAC A
12
12
12
12
12
DGND
18
CS A
5
CS B
20
WR
19
21
V
DD
DAC7802
6
2
I
3
R
OUT A
FB A
23
R
24
I
1
AGND
FB B
OUT B
DAC A Register
CK
DAC B Register
DB11–DB0
4
22
V
V
REF A
REF B
BLOCK DIAGRAM
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
AGND
I
R
V
CS A
(LSB) DB0
DB1
DB2
DB3
DB4
DB5
DGND
I
R
V
V
CS B
WR
DB11 (MSB)
DB10
DB9
DB8
DB7
DB6
OUT A
FB A
REF A
FB B
REF B
DD
OUT B
DAC7802
Top View
DIP
TIMING CHARACTERISTICS
At VDD = +5V, and TA = –40oC to +85oC.
DATA
5V
0V
5V
5V
CSA, CSB
WR
t
2
t
1
t
3
t
4
t
5
NOTES: (1) All input signal rise and fall times are measured from 10%
to 90% of +5V. t = t = 5ns. (2) Timing measurement reference level
is
V + V
2
F
R
IH
IL
.
PARAMETER
MINIMUM
t1 - Data Setup Time
20ns
t2 - Data Hold Time
15ns
t3 - Chip Select to Write Setup Time
30ns
t4 - Chip Select to Write Hold Time
0ns
t5 - Write Pulse Width
30ns
LOGIC TRUTH TABLE
CSA
CSB
WR
FUNCTION
X
X
1
No Data Transfer
1
1
X
No Data Transfer
0
A Rising Edge on CSA or CSB Loads
Data to the Respective DAC
01
DAC A Register Loaded from Data Bus
10
DAC B Register Loaded from Data Bus
00
DAC A and DAC B Registers Loaded
from Data Bus
X = Don’t care.
means rising edge triggered.
PIN CONFIGURATION
DAC7802
DAC7801 (CONT)
TIMING CHARACTERISTICS
VDD = +5V, VREF A = VREF B = +10V, TA = –40°C to +85°C.
PARAMETER
MINIMUM
t1 — Address Valid to Write Setup Time
10ns
t2 — Address Valid to Write Hold Time
10ns
t3 — Data Setup Time
30ns
t4 — Data Hold Time
10ns
t5 — Chip Select or Update to Write Setup Time
0ns
t6 — Chip Select or Update to Write Hold Time
0ns
t7 — Write Pulse Width
40ns
t8 — Clear Pulse Width
40ns
A0–A1
CLR
t
2
t
1
t
8
WR
t
7
CS, UPD
t
6
t
4
t
3
DATA
t
5
5V
0V
5V
0V
5V
0V
5V
0V
5V
0V
NOTES: (1) All input signal rise and fall times are measured from 10% to 90% of +5V. t = t = 5ns. (2) Timing measurement reference level is
F
R
V + V
2
IH
IL
.


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