參數(shù)資料
型號(hào): AD7233BN
廠商: ANALOG DEVICES INC
元件分類: DAC
英文描述: LC2MOS 12-Bit Serial Mini-DIP DACPORT
中文描述: SERIAL INPUT LOADING, 5 us SETTLING TIME, 12-BIT DAC, PDIP8
封裝: MINI, PLASTIC, DIP-8
文件頁(yè)數(shù): 6/8頁(yè)
文件大?。?/td> 99K
代理商: AD7233BN
AD7233–Typical Performance Graphs
REV. A
–6–
APPLYING THE AD7233
Bipolar ( 5 V) Configuration
The AD7233 provides an output voltage range from –5 V to
+5 V without any external components. This configuration is
shown in Figure 4. The data format is two's complement. The
output code table is shown in Table I. If offset binary coding is
required, then this can be done by inverting the MSB in soft-
ware before the data is loaded to the AD7233.
AD7233
V
DD
V
SS
GND
12-BIT
DAC
2R
2R
V
OUT
+15V
15V
+5V
+12V TO
12V TO
Figure 4. Circuit Configuration
Power Supply Decoupling
To achieve optimum performance when using the AD7233, the
V
DD
and V
SS
lines should each be decoupled to GND using
0.1
μ
F capacitors. In very noisy environments it is recom-
mended that 10
μ
F capacitors be connected in parallel with the
0.1
μ
F capacitors.
Table I. AD7233 Bipolar Code Table
Input Data Word
MSB LSB
Analog Output, V
OUT
XXXX 0111 1111 1111
XXXX 0000 0000 0001
XXXX 0000 0000 0000
XXXX 1111 1111 1111
XXXX 1000 0000 0001
XXXX 1000 0000 0000
+5 V (2047/2048)
+5 V (1/2048)
0 V
–5 V (1/2048)
–5 V (2047/2048)
–5 V (2048/2048) = –5 V
X = Don’t Care
Note: 1 LSB = 5 V/2048
2.4 mV
100
0
100k
20
10
1k
10
40
30
50
60
70
80
90
100
10k
FREQUENCY
Hz
P
OUTPUT WITH ALL
0s ON DAC
DECOUPLING
DECOUPLING
NO DECOUPLING
OUTPUT WITH ALL
1s ON DAC
NO DECOUPLING
V = +15V WITH
100mV p
p SIGNAL
POWER SUPPLY DECOUPLING CAPACITORS
ARE 10
μ
F AND 0.1
μ
F.
*
Power Supply Rejection Ratio
vs. Frequency
0.50
0
10.5
16
0.10
13
0.20
0.30
0.40
11
12
14
15
T = +25 C
V /V
Volts
L
Linearity vs. Power Supply Voltage
500
0
100k
20
5k
50
50
100
200
100 200 500 1k 2k
10k 20k
50k
FREQUENCY
Hz
n
OUTPUT WITH ALL
0s ON DAC
V = +15V
V =
15V
T = +25 C
Noise Spectral Density
vs. Frequency
相關(guān)PDF資料
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