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参数资料
| 型号： | EVAL-AD7923CBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 23/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AD7923 |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 200k |
| 数据接口： | 串行 |
| 输入范围： | 0 ~ 2.5 V |
| 在以下条件下的电源（标准）： | 7.5mW @ 200kSPS，5 V |
| 工作温度： | -40°C ~ 125°C |
| 已用 IC / 零件： | AD7923 |
| 已供物品： | 板，CD |
| 相关产品： | AD7923BRUZ-REEL7TR-ND - IC ADC 12BIT 4CH W/SEQ 16TSSOP AD7923BRUZ-REEL-ND - IC ADC 12BIT 4CH W/SEQ 16TSSOP AD7923BRUZ-ND - IC ADC 12BIT 4CH W/SEQ 16TSSOP |
AD7923
Data Sheet
Rev. D | Page 8 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY (kHz)
SNR
(dB)
–10
–50
–30
–70
–90
–110
0
10
20
30
40
60
70
80
90
50
100
03096-004
4096 POINT FFT
AVDD = 4.75V
fSAMPLE = 200kSPS
fIN = 50 kHz
SINAD = 70.714dB
THD = –82.853dB
SFDR = –84.815dB
Figure 4. Dynamic Performance at 200 kSPS
INPUT FREQUENCY (kHz)
SINAD
(dB)
75
70
65
60
0
100
03086-005
fSAMPLE = 200kSPS
TA = 25°C
RANGE = 0V TO REFIN
AVDD = VDRIVE = 5.25V
AVDD = VDRIVE = 4.75V
AVDD = VDRIVE = 3.6V
AVDD = VDRIVE = 2.7V
Figure 5. SINAD vs. Analog Input Frequency for Various Supply Voltages at
200 kSPS
SUPPLY RIPPLE FREQUENCY (kHz)
PSRR
(dB)
0
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
20
40
60
80
100
120
140
160
180
200
03086-006
AVDD = 5V
200mV p-p SINE WAVE ON AVDD
REFIN = 2.5V, 1F CAPACITOR
TA = 25°C
Figure 6. PSRR vs. Supply Ripple Frequency
INPUT FREQUENCY (kHz)
THD
(dB)
–50
–90
–85
–80
–75
–70
–65
–60
–55
10
100
03086-007
fSAMPLE = 200kSPS
TA = 25°C
RANGE = 0V TO REFIN
AVDD = VDRIVE = 5.25V
AVDD = VDRIVE = 4.75V
AVDD = VDRIVE = 2.7V
AVDD = VDRIVE = 3.6V
Figure 7. THD vs. Analog Input Frequency
for Various Supply Voltages at 200 kSPS
INPUT FREQUENCY (kHz)
THD
(dB)
–55
–95
–90
–85
–80
–75
–70
–65
–60
10
100
03086-008
fSAMPLE = 200kSPS
TA = 25°C
AVDD = 5.25V
RANGE = 0V TO REFIN
RIN = 100
RIN = 1000
RIN = 10
RIN = 50
Figure 8. THD vs. Analog Input Frequency for Various Source Impedances
CODE
INL
ERROR
(LSB)
1.0
0.6
0.8
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
512
1024
1536
2048
2560
3072
3584
4096
03096-009
AVDD = VDRIVE = 5V
TEMP = 25
°C
Figure 9. Typical INL
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