104 –20 –10 –30
參數(shù)資料
型號(hào): AD7837AN
廠商: Analog Devices Inc
文件頁(yè)數(shù): 9/12頁(yè)
文件大?。?/td> 0K
描述: IC DAC 12BIT MULT DUAL 24-DIP
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝: 15
設(shè)置時(shí)間: 4µs
位數(shù): 12
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 2
電壓電源: 雙 ±
功率耗散(最大): 210mW
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 24-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 24-PDIP
包裝: 管件
輸出數(shù)目和類型: 2 電壓,單極;2 電壓,雙極
采樣率(每秒): 250k
AD7837/AD7847–Typical Performance Graphs
REV. C
–6–
FREQUENCY – Hz
GAIN
dB
10
0
104
–20
–10
–30
105
106
107
VDD = +15V
VSS = –15V
VREF = +20Vp–p
DAC CODE = 111...111
Figure 1. Frequency Response
VDD /VSS – Volts
ERROR
LSB
0.5
0.0
0
0.4
0.3
0.2
0.1
11
13
15
17
INL
DNL
VREF = 7.5V
Figure 4. Linearity vs. Power Supply
FREQUENCY – kHz
FEEDTHROUGH
dB
0.1
1
100
VDD = +15V
VSS = –15V
VREF = 20V p-p
DAC CODE = 000...000
–100
10
1000
–90
–80
–70
–60
–50
Figure 7. Multiplying Feedthrough
Error vs. Frequency
LOAD RESISTANCE –
V
OUT
Volts
p
p
20
5
10
15
10
0
100
1k
10k
VDD = +15V
VSS = –15V
VREF = +20Vp–p @ 1kHz
DAC CODE = 111...111
25
Figure 2. Output Voltage Swing vs.
Resistive Load
FREQUENCY – Hz
NOISE
SPECTRAL
DENSITY
nV
/
Hz
400
0.01
0
0.1
1
100
VDD = +15V
VSS = –15V
VREF = 0V
DAC CODE = 111...111
300
200
100
10
Figure 5. Noise Spectral Density vs.
Frequency
HORIZ 2 s/DIV
VERT 2V/DIV
VOUT
FULL SCALE
ZERO SCALE
Figure 8. Large Signal Pulse
Response
CODE
ERROR
LSB
0
–0.2
0.6
0.4
0.2
–0.6
–0.4
0
2048
4095
0
–0.2
0.6
0.4
0.2
–0.6
–0.4
VDD = +15V
VSS = –15V
DAC A
DAC B
Figure 3. DAC-to-DAC Linearity
Matching
FREQUENCY – kHz
THD
dB
0.1
100
110
–40
VDD = +15V
VSS = –15V
VREF = 6V rms
DAC CODE = 111...111
–50
–60
–70
–80
–90
–100
Figure 6. THD vs. Frequency
A1 –0.01V
2 s
200mV
50mV
B
Lw
Figure 9. Small Signal Pulse
Response
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