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AD7233BN 数据表(PDF) 6 Page - Analog Devices

部件名 AD7233BN
功能描述  LC2MOS 12-Bit Serial Mini-DIP DACPORT
Download  8 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7233BN 数据表(HTML) 6 Page - Analog Devices

  AD7233BN Datasheet HTML 1Page - Analog Devices AD7233BN Datasheet HTML 2Page - Analog Devices AD7233BN Datasheet HTML 3Page - Analog Devices AD7233BN Datasheet HTML 4Page - Analog Devices AD7233BN Datasheet HTML 5Page - Analog Devices AD7233BN Datasheet HTML 6Page - Analog Devices AD7233BN Datasheet HTML 7Page - Analog Devices AD7233BN Datasheet HTML 8Page - Analog Devices  
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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
VSS
GND
12-BIT
DAC
2R
2R
VOUT
+15V
–15V
+5V
+12V TO
–12V TO
Figure 4. Circuit Configuration
Power Supply Decoupling
To achieve optimum performance when using the AD7233, the
VDD and VSS lines should each be decoupled to GND using
0.1
µF capacitors. In very noisy environments it is recom-
mended that 10
µF capacitors be connected in parallel with the
0.1
µF capacitors.
Table I. AD7233 Bipolar Code Table
Input Data Word
MSB
LSB
Analog Output, VOUT
XXXX 0111 1111 1111
+5 V • (2047/2048)
XXXX 0000 0000 0001
+5 V • (1/2048)
XXXX 0000 0000 0000
0 V
XXXX 1111 1111 1111
–5 V • (1/2048)
XXXX 1000 0000 0001
–5 V • (2047/2048)
XXXX 1000 0000 0000
–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
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
DD
POWER SUPPLY DECOUPLING CAPACITORS
ARE 10
µF AND 0.1µF.
*
Power Supply Rejection Ratio
vs. Frequency
0.50
0
16
0.10
13
10.5
0.20
0.30
0.40
11
12
14
15
T = +25 C
A
V
/V
– Volts
DD
SS
Linearity vs. Power Supply Voltage
500
0
100k
20
5k
50
50
100
200
100 200 500 1k 2k
10k 20k
50k
FREQUENCY – Hz
OUTPUT WITH ALL
0s ON DAC
V
= +15V
V
= – 15V
T = +25 C
DD
SS
A
Noise Spectral Density
vs. Frequency


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