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參數資料
| 型號： | TLC7628CNE4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | PARALLEL, 8 BITS INPUT LOADING, 0.1 us SETTLING TIME, 8-BIT DAC, PDIP20 |
| 封裝： | ROHS COMPLIANT, PLASTIC, DIP-20 |
| 文件頁數： | 11/13頁 |
| 文件大小： | 255K |
| 代理商： | TLC7628CNE4 |
TLC7628C
DUAL 8BIT MULTIPLYING
SLAS063B APRIL 1989 REVISED MARCH 2007
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
φ 2
Address
Decoder
Logic
Address Bus
Data Bus
D0 D7
DB7
DB0
WR
CS
DACA/DACB
TLC7628
VMA
CPU
6800
A8A15
A
A + 1
NOTE D: A = decoded address for TLC7628 DACA
A + 1 = decoded address for TLC7628 DACB
Figure 5. TLC7628 6800 Interface
voltage-mode operation
The current-multiplying DAC in the TLC7628C can be operated in a voltage mode. In the voltage mode, a fixed
voltage is placed on the current output terminal. The analog output voltage is then available at the reference
voltage terminal. An example of a current-multiplying DAC operating in voltage mode is shown in Figure 6. The
relationship between the fixed input voltage and the analog output voltage is given by the following equation:
Analog output voltage = fixed input voltage (D/256)
where D = the digital input. In voltage-mode operation, these devices meet the following specification:
LINEARITY ERROR
TEST CONDITIONS
MIN
MAX
UNIT
Analog output voltage for REFA, REFB
VDD = 12 V, OUTA or OUTB at 5 V, TA = 25°C
1
LSB
2R
“0”
“1”
2R
RR
R
OUT (Fixed input voltage)
AGND
REF
(Analog output voltage)
Figure 6. Current-Multiplying DAC Operating in Voltage Mode
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