參數(shù)資料
型號: AD7725BSZ
廠商: Analog Devices Inc
文件頁數(shù): 6/28頁
文件大?。?/td> 0K
描述: IC ADC 16BIT PROG 44MQFP
產(chǎn)品變化通告: AD7725BSZ Discontinuation 16/Mar/2012
標(biāo)準(zhǔn)包裝: 1
位數(shù): 16
采樣率(每秒): 900k
數(shù)據(jù)接口: 串行,并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 30mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-QFP
供應(yīng)商設(shè)備封裝: 44-MQFP(10x10)
包裝: 托盤
輸入數(shù)目和類型: 2 個單端,單極;2 個單端,雙極;1 個差分,雙極
配用: EVAL-AD7725CBZ-ND - BOARD EVALUATION FOR AD7725
REV. A
–14–
AD7725–Typical Performance Characteristics
PERFORMANCE PLOTS
The following typical plots are generated using the digital filter shown in Figure 1.
(AV
DD = DVDD, TA = 25 C, CLKIN = 9.6 MHz, External Reference = 2.5 V, unless otherwise noted.)
ANALOG INPUT LEVEL – dB
110
100
30
–50
0
dB
–40
–30
–20
90
60
50
80
70
40
–10
SFDR
THD
SNR
INPUT FREQUENCY = 10kHz
TPC 1. SNR, THD, and SFDR vs. Analog Input
Level Relative to Full Scale
CLKIN FREQUENCY – MHz
120
60
0
14.4
dB
2.4
7.2
9.6
110
80
70
12
100
4.8
90
THD
SFDR
SNR
INPUT FREQUENCY = 10kHz
TPC 2. SNR, THD, and SFDR vs. Sampling Frequency
TEMPERATURE – C
110
105
70
–50
100
dB
–25
0
25
100
85
80
95
90
75
SFDR
THD
SNR
INPUT FREQUENCY = 10kHz
50
TPC 3. SNR, THD, and SFDR vs. Temperature
CODE
5000
0
32717
32726
FREQ
UENCY
OF
OCCURRENCE
32718
32721 32722
4000
2000
1000
32724
8192 SAMPLES TAKEN
VIN(+) = V IN(–)
MAXIMUM OUTPUT DATA RATE
3000
32719 32720
32723
32725
TPC 4. Histogram of Output Codes for a DC Input
FREQUENCY – kHz
0
–20
–160
0
300
PO
WER
LEVEL
RELA
TIVE
T
O
FULL
SCALE
dB
50
100
150
–40
–100
–120
–60
–80
–140
250
SNR = 84dB
THD = –93.85dB
SFDR = –98.47dB
AIN = 10kHz
MEASURED BW = 300kHz
200
TPC 5. 16k Point FFT
FREQUENCY – kHz
0
–20
–160
0
300
PO
WER
LEVEL
RELA
TIVE
T
O
FULL
SCALE
dB
50
100
150
–40
–100
–120
–60
–80
–140
250
SNR = 80.48dB
THD = –90.62dB
SFDR = –98dB
AIN = 10kHz
MEASURED BW = 450kHz
200
350
400
450
TPC 6. 16k Point FFT for a 108 Tap Low-Pass FIR
Filter Operating with a CLKIN Frequency of 14.4 MHz
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