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參數(shù)資料
| 型號： | AD7625BCPZRL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT 6MSPS SAR 32LFCSP |
| 設(shè)計資源： | High Speed, Precision, Differential AC-Coupled Drive Circuit for AD7625 (CN0080) |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 系列： | PulSAR® |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 6M |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 190mW |
| 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： | 32-VFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 32-LFCSP-VQ（5x5） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個差分，雙極 |
AD7625
Data Sheet
Rev. A | Page 16 of 24
DRIVING THE AD7625
Differential Analog Input Source
Figure 24 shows an ADA4899-1 driving each differential input
to the AD7625.
Single-Ended-to-Differential Driver
For applications using unipolar analog signals, a single-ended-
to-differential driver, as shown in Figure 23, allows for a differ-
ential input into the part. This configuration, when provided
with an input signal of 0 V to 4.096 V, produces a differential
±4.096 V with midscale at 2.048 V. The one-pole filter using
R = 33 Ω and C = 56 pF provides a corner frequency of 86 MHz.
The VCM output of the AD7625 can be buffered and then used
to provide the required 2.048 V common-mode voltage.
56pF
33
50
IN+
IN–
AD7625
VCM
V–
V+
AD8031, AD8032
07652-
033
U2
U1
ADA4899-1
56pF
100nF
590
ANALOG INPUT
(UNIPOLAR 0V TO 4.096V)
Figure 23. Single-Ended-to-Differential Driver Circuit
56pF
33
–VS
0V TO VREF
+VS
56pF
33
–VS
VREF TO 0V
+VS
CREF
10F2
REF1
REF
GND
IN+
IN–
AD7625
ADA4899-1
1SEE THE VOLTAGE REFERENCE OPTIONS SECTION. CONNECTION TO EXTERNAL REFERENCE SIGNALS
IS DEPENDENT ON THE EN1 AND EN0 SETTINGS.
2CREF IS USUALLY A 10F CERAMIC CAPACITOR WITH LOW ESL AND ESR.
THE REF AND REFIN PINS ARE DECOUPLED REGARDLESS OF EN1 AND EN0 SETTINGS.
VCM
–VS
+VS
BUFFERED VCM PIN OUTPUT
GIVES THE REQUIRED 2.048V
COMMON-MODE SUPPLY FOR
ANALOG INPUTS.
VCM
2.048V
AD8031, AD8032
ADA4899-1
REFIN
REF1
CREF
10F2
07652-
025
0.1F
Figure 24. Driving the AD7625 from a Differential Analog Source
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| AD7626BCPZ | 功能描述:IC ADC 16BIT 10MSPS DIFF 32LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 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）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
| AD7626BCPZ-RL7 | 功能描述:IC ADC 16BIT 10MSPS DIFF 32LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 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）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
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