參數(shù)資料
型號(hào): AD7625BCPZRL7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 9/24頁(yè)
文件大?。?/td> 0K
描述: IC ADC 16BIT 6MSPS SAR 32LFCSP
設(shè)計(jì)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(lèi)型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤(pán),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(lèi)型: 1 個(gè)差分,雙極
Data Sheet
AD7625
Rev. A | Page 17 of 24
VOLTAGE REFERENCE OPTIONS
The AD7625 allows flexible options for creating and buffering
the reference voltage. The AD7625 conversions refer to 4.096 V
only. The various options creating this 4.096 V reference are
controlled by the EN1 and EN0 pins (see Table 8).
Table 8. Voltage Reference Options1
Option
EN1
EN0
Reference Mode
A
1
Use internal reference and internal
reference buffer (both are enabled).
B
0
1
Use external 1.2 V reference with
internal reference buffer enabled.
The internal reference is disabled.
C
1
0
Use external 4.096 V reference with
an external reference buffer. The
internal reference and reference
buffer are disabled.
1 EN1 = 0 and EN0 = 0 is an illegal state.
10F
ADR434
ADR444
REF
IN+
AD7625
V+
REFIN
10F
ADR280
V+
V–
V+
SETTING EN1 = 1 AND EN0 = 0
DISABLES THE INTERNAL REFERENCE
AND REFERENCE BUFFER. CONNECT THE
BUFFERED 4.096V SIGNAL TO
THE REF PIN.
SETTING EN1 = 1 AND EN0 = 1 ENABLES THE INTERNAL
REFERENCE AND REFERENCE BUFFER. DECOUPLE
THE REF AND REFIN PINS EXTERNALLY.
IN–
B
C
A
07652-
026
SETTING EN1 = 0 AND EN0 = 1
DISABLES THE INTERNAL REFERENCE
AND ENABLES THE INTERNAL REFERENCE BUFFER.
CONNECT A 1.2V REFERENCE TO THE REFIN PIN. THE 1.2V
APPLIED TO THE REFIN PIN IS BUFFERED INTERNALLY
TO CREATE A 4.096V REFERENCE FOR THE ADC.
Figure 25. Voltage Reference Options
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