(AVDD = DVDD = 5.0 V, TA = +25 C; CLKIN = 12.5 MHz, AIN = 20 kHz, Bipolar Mode; V
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� AD7720BRU
寤犲晢锛� Analog Devices Inc
鏂囦欢闋佹暩(sh霉)锛� 15/16闋�
鏂囦欢澶у皬锛� 0K
鎻忚堪锛� IC MODULATOR SIGMA-DELTA 28TSSOP
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 1
浣嶆暩(sh霉)锛� 16
閲囨ǎ鐜囷紙姣忕锛夛細 12.5M
鏁�(sh霉)鎿�(j霉)鎺ュ彛锛� 骞惰伅(li谩n)
杞�(zhu菐n)鎻涘櫒鏁�(sh霉)鐩細 1
鍔熺巼鑰楁暎锛堟渶澶э級锛� 215mW
闆诲闆绘簮锛� 妯℃摤鍜屾暩(sh霉)瀛�
宸ヤ綔婧害锛� -40°C ~ 85°C
瀹夎椤炲瀷锛� 琛ㄩ潰璨艰
灏佽/澶栨锛� 28-TSSOP锛�0.173"锛�4.40mm 瀵級
渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 28-TSSOP
鍖呰锛� 绠′欢
杓稿叆鏁�(sh霉)鐩拰椤炲瀷锛� 1 鍊�(g猫)宸垎锛屽柈妤�锛�1 鍊�(g猫)宸垎锛岄洐妤�
(AVDD = DVDD = 5.0 V, TA = +25 C; CLKIN = 12.5 MHz, AIN = 20 kHz, Bipolar Mode; VIN(+) = 0 V to 2.5 V, VIN(鈥�) = 1.25 V unless otherwise
noted)
AD7720鈥揟ypical Characteristics
鈥�8鈥�
REV. 0
INPUT LEVEL 鈥� dB
dB
110
100
50
鈥�40
鈥�30
0
鈥�20
鈥�10
90
80
70
60
SFDR
S/ (N+D)
Figure 5. S/(N+D) and SFDR vs.
Analog Input Level
INPUT FREQUENCY 鈥� kHz
dB
鈥�85
鈥�90
鈥�115
0
20
100
40
60
80
鈥�95
鈥�100
鈥�105
鈥�110
THD
SNR
SFDR
VIN (+) = VIN(鈥�) = 1.25Vpk鈥損k
VCM = 2.5V
Figure 8. SNR, THD, and SFDR vs.
Input Frequency
TEMPERATURE 鈥�
掳C
dB
鈥�94
鈥�116
鈥�50
鈥�25
100
025
50
75
鈥�96
鈥�108
鈥�110
鈥�112
鈥�114
鈥�100
鈥�102
鈥�106
鈥�104
鈥�98
THD
3RD
4TH
2ND
Figure 11. THD vs. Temperature
OUTPUT DATA RATE 鈥� kSPS
dB
84
92
85
88
89
90
91
86
87
0
50
300
100
150
200
250
AIN = 1/5
BW
Figure 6. S/(N+D) vs. Output Sample
Rate
OUTPUT DATA RATE 鈥� kSPS
dB
84
92
85
88
89
90
91
86
87
0
50
300
100
150
200
250
AIN = 1/5
BW
VIN (+) = VIN(鈥�) = 1.25Vpk鈥損k
VCM = 2.5V
Figure 9. S/(N+D) vs. Output Sample
Rate
CODES
FREQUENCY
OF
OCCURENCE
5000
0
n鈥�3
n鈥�2
n+3
n鈥�1
n
n+1
n+2
4500
2000
1500
1000
500
4000
3500
2500
3000
VIN(+) = VIN(鈥�)
CLKIN = 12.5MHz
8k SAMPLES
Figure 12. Histogram of Output Codes
with DC Input
INPUT FREQUENCY 鈥� kHz
dB
鈥�85
鈥�90
鈥�115
0
20
100
40
60
80
鈥�95
鈥�100
鈥�105
鈥�110
SNR
SFDR
THD
Figure 7. SNR, THD, and SFDR vs.
Input Frequency
TEMPERATURE 鈥�
掳C
92.0
91.5
88.0
鈥�50
0
100
50
90.0
89.5
88.5
89.0
91.0
90.5
dB
Figure 10. SNR vs. Temperature
CODE
DNL
ERROR
鈥�
LSB
1.0
0.8
鈥�1.0
0
20000
65535
40000
鈥�0.4
鈥�0.8
鈥�0.6
0
鈥�0.2
0.6
0.2
0.4
Figure 13. Differential Nonlinearity
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
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鐩搁棞(gu膩n)浠g悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉)
鍙冩暩(sh霉)鎻忚堪
AD7720BRU-REEL 鍒堕€犲晢:Analog Devices 鍔熻兘鎻忚堪:ADC Single Delta-Sigma 25Msps 16-bit Serial 28-Pin TSSOP T/R
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AD7720BRUZ 鍔熻兘鎻忚堪:IC MODULATOR SIGMA-DELTA 28TSSOP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鏁�(sh霉)鎿�(j霉)閲囬泦 - 妯℃暩(sh霉)杞�(zhu菐n)鎻涘櫒 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:1,000 绯诲垪:- 浣嶆暩(sh霉):12 閲囨ǎ鐜囷紙姣忕锛�:300k 鏁�(sh霉)鎿�(j霉)鎺ュ彛:骞惰伅(li谩n) 杞�(zhu菐n)鎻涘櫒鏁�(sh霉)鐩�:1 鍔熺巼鑰楁暎锛堟渶澶э級:75mW 闆诲闆绘簮:鍠浕婧� 宸ヤ綔婧害:0°C ~ 70°C 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:24-SOIC锛�0.295"锛�7.50mm 瀵級 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:24-SOIC 鍖呰:甯跺嵎 (TR) 杓稿叆鏁�(sh霉)鐩拰椤炲瀷:1 鍊�(g猫)鍠锛屽柈妤�锛�1 鍊�(g猫)鍠锛岄洐妤�
AD7720BRUZ-REEL 鍔熻兘鎻忚堪:IC MODULATOR SIGMA-DELTA 28TSSOP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鏁�(sh霉)鎿�(j霉)閲囬泦 - 妯℃暩(sh霉)杞�(zhu菐n)鎻涘櫒 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:1,000 绯诲垪:- 浣嶆暩(sh霉):12 閲囨ǎ鐜囷紙姣忕锛�:300k 鏁�(sh霉)鎿�(j霉)鎺ュ彛:骞惰伅(li谩n) 杞�(zhu菐n)鎻涘櫒鏁�(sh霉)鐩�:1 鍔熺巼鑰楁暎锛堟渶澶э級:75mW 闆诲闆绘簮:鍠浕婧� 宸ヤ綔婧害:0°C ~ 70°C 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:24-SOIC锛�0.295"锛�7.50mm 瀵級 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:24-SOIC 鍖呰:甯跺嵎 (TR) 杓稿叆鏁�(sh霉)鐩拰椤炲瀷:1 鍊�(g猫)鍠锛屽柈妤碉紱1 鍊�(g猫)鍠锛岄洐妤�
AD7720BRUZ-REEL7 鍔熻兘鎻忚堪:IC MODULATOR SIGMA-DELTA 28TSSOP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鏁�(sh霉)鎿�(j霉)閲囬泦 - 妯℃暩(sh霉)杞�(zhu菐n)鎻涘櫒 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:1,000 绯诲垪:- 浣嶆暩(sh霉):12 閲囨ǎ鐜囷紙姣忕锛�:300k 鏁�(sh霉)鎿�(j霉)鎺ュ彛:骞惰伅(li谩n) 杞�(zhu菐n)鎻涘櫒鏁�(sh霉)鐩�:1 鍔熺巼鑰楁暎锛堟渶澶э級:75mW 闆诲闆绘簮:鍠浕婧� 宸ヤ綔婧害:0°C ~ 70°C 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:24-SOIC锛�0.295"锛�7.50mm 瀵級 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:24-SOIC 鍖呰:甯跺嵎 (TR) 杓稿叆鏁�(sh霉)鐩拰椤炲瀷:1 鍊�(g猫)鍠锛屽柈妤�锛�1 鍊�(g猫)鍠锛岄洐妤�