参数资料
型号: TLC7628CN
厂商: TEXAS INSTRUMENTS INC
元件分类: DAC
英文描述: PARALLEL, 8 BITS INPUT LOADING, 0.1 us SETTLING TIME, 8-BIT DAC, PDIP20
封装: ROHS COMPLIANT, PLASTIC, DIP-20
文件页数: 10/13页
文件大小: 255K
代理商: TLC7628CN
TLC7628C
DUAL 8BIT MULTIPLYING
SLAS063B APRIL 1989 REVISED MARCH 2007
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
8
17
DGND
5
16
15
6
7
14
VDD
WR
CS
DACB
DACA/
DB7
DBO
VI(B)
±10 V
R3 (see Note A)
REFB
8
88
REFA
RFBA
OUTA
AGND
OUTB
RFBA
C1(see Note C)
A1
R4 (see Note A)
C2
(see Note C)
AGND
A3
5 k
R12
R10
20 k
(see Note B)
(see
Note B)
R9
10 k
R8
20 k
A4
VOB
(see
Note B)
5 k
R11
10 k
R7
A2
VOA
20 k
R5
20 k
R6 (see Note B)
R2 (see Note A)
R1 (see Note A)
±10 V
VI(A)
+
+
+
+
RECOMMENDED TRIM
RESISTOR VALUES
R1, R3
R2, R4
500
150
Control
Logic
Input
Buffer
Latch
DACA
Latch
DACB
NOTES: A. R1, R2, R3, and R4 are used only if gain adjustment is required. See table for recommended values. Adjust R1 for VOA = 0 V with
code 10000000 in DACA latch. Adjust R3 for VOB = 0 V with 10000000 in DACB latch.
B. Matching and tracking are essential for resistor pairs R6, R7, R9, and R10.
C. C1 and C2 phase compensation capacitors (10 pF to 15 pF) may be required if A1 and A3 are high-speed amplifiers.
Figure 3. Bipolar Operation (4-Quadrant Operation)
A + 1
A
A8A15
CPU
8051
WR
ALE
TLC7628
DACA/DACB
CS
WR
DB0
DB7
AD0AD7
Data Bus
Address Bus
Latch
Address
Decode
Logic
NOTE D: A = decoded address for TLC7628 DACA
A + 1 = decoded address for TLC7628 DACB
Figure 4. TLC7628 — Intel 8051 Interface
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