參數(shù)資料
型號： AD7892BNZ-1
廠商： Analog Devices Inc
文件頁數(shù)： 3/14頁
文件大?。?/td> 0K
描述： IC ADC 12BIT LP 500KSPS 24-DIP
標準包裝： 15
位數(shù)： 12
采樣率（每秒）： 500k
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）： 90mW
電壓電源： 單電源
工作溫度： -40°C ~ 85°C
安裝類型： 通孔
封裝/外殼： 24-DIP（0.300"，7.62mm）
供應(yīng)商設(shè)備封裝： 24-PDIP
包裝： 管件
輸入數(shù)目和類型： 2 個單端，雙極
產(chǎn)品目錄頁面： 779 (CN2011-ZH PDF)
AD7892
REV. C
–11–
The designed code transitions occur midway between successive
integer LSB values (i.e., 1/2 LSB, 3/2 LSBs, 5/2 LSBs). Output
coding is two’s complement binary with 1 LSB = FSR/4096 =
20 V/4096 = 4.88 mV for the
±10 V range and 1 LSB = FSR/
4096 = 10 V/4096 = 2.44 mV for the
±5 V range. The ideal
input/output transfer function for the AD7892-1 is shown in
Table I.
AD7892-2
The analog input section for the AD7892-2 contains no biasing
resistors. The analog input looks directly into the track/hold
input stage. The analog input range on the VIN1 input is 0 V to
+2.5 V. The VIN2 input can be left unconnected but if it is
connected to a potential then that potential must be AGND.
The VIN1 input connects directly to the input sampling capacitor
of the AD7892-2’s track/hold. The value of this input sampling
capacitor is nominally 10 pF.
Once again, the designed code transitions occur midway be-
tween successive integer LSB values (i.e., 1/2 LSB, 3/2 LSBs,
5/2 LSBs). Output coding is straight (natural) binary with
1 LSB = FSR/4096 = 2.5 V/4096 = 0.61 mV. The ideal input/
output transfer function for the AD7892-2 is shown in Table II.
Table I. Ideal Input/Output Code Table for the AD7892-1
Digital Output
Analog Input
Code Transition
+FSR/2 – 3/2 LSB1, 2 (9.99268 or 4.99634)3
011 . . . 110 to 011 . . . 111
+FSR/2 – 5/2 LSBs (9.98779 or 4.99390)
011 . . . 101 to 011 . . . 110
+FSR/2 – 7/2 LSBs (9.98291 or 4.99146)
011 . . . 100 to 011 . . . 101
AGND + 3/2 LSB (0.00732 or 0.00366)
000 . . . 001 to 000 . . . 010
AGND + 1/2 LSB (0.00244 or 0.00122)
AGND – 1/2 LSB (–0.00244 or –0.00122)
111 . . . 111 to 000 . . . 000
AGND – 3/2 LSB (–0.00732 or –0.00366)
111 . . . 110 to 111 . . . 111
–FSR/2 + 5/2 LSB (–9.98779 or – 4.99390)
100 . . . 010 to 100 . . . 011
–FSR/2 + 3/2 LSB (–9.99268 or – 4.99634)
100 . . . 001 to 100 . . . 010
–FSR/2 + 1/2 LSB (–9.99756 or – 4.99878)
100 . . . 000 to 100 . . . 001
NOTES
1FSR is full-scale range and REF IN = +2.5 V, is 20 V for the
±10 V range and 10 V
for the
±5 V range.
21 LSB = FSR/4096 = 4.88 mV (
±10 V range) and 2.44 mV (±5 V range) with REF
IN = +2.5 V.
3
± 10 V range or ±5 V range.
Table II. Ideal Input/Output Code Table for the AD7892-2
Digital Output
Analog Input
Code Transition
+FSR – 3/2 LSB
1, 2 (2.499084 V)
111 . . . 110 to 111 . . . 111
+FSR – 5/2 LSBs (2.498474 V)
111 . . . 110 to 111 . . . 110
+FSR – 7/2 LSBs (2.497864 V)
111 . . . 100 to 111 . . . 101
AGND + 5/2 LSB (0.001526 V)
000 . . . 010 to 010 . . . 011
AGND + 3/2 LSB (0.00916 V)
000 . . . 001 to 001 . . . 010
AGND + 1/2 LSB (0.000305 V)
000 . . . 000 to 000 . . . 001
NOTES
1FSR is full-scale range and is 2.5 V with REF IN = +2.5 V.
21 LSB = FSR/4096 = 0.61 mV with REF IN = +2.5 V.
AD7892-3
Figure 5 shows the analog input section for the AD7892-3. The
analog input range is
±2.5 V on the VIN1 input. The VIN2 input
can be left unconnected but if it is connected to a potential then
that potential must be AGND. The input resistance on the VIN1
is 1.8 k
nominal. As a result, the VIN1 input should be driven
from a low impedance source. The resistor attenuator stage is
followed by the high input impedance stage of the track/hold
amplifier. This resistor attenuator stage allows the input voltage
to go to
±7 V without damaging the AD7892-3.
The designed code transitions occur midway between succes-
sive integer LSB values (i.e., 1/2 LSB, 3/2 LSBs, 5/2 LSBs).
Output coding is two’s complement binary with 1 LSB = FSR/
4096 = 5 V/4096 = 1.22 mV with REF IN = +2.5 V. The ideal
input/output transfer function for the AD7892-3 is shown in
Table III.
+2.5
REFERENCE
REF OUT/
REF IN
VIN1
VIN2*
AGND
TO HIGH
IMPEDANCE
SHA INPUT
TO ADC
REFERENCE
CIRCUITRY
2k
3.25k
* UNCONNECTED INTERNALLY ON THE AD7892-3
Figure 5. AD7892-3 Analog Input Structure
Table III. Ideal Input/Output Code Table for the AD7892-3
Digital Output
Analog Input
Code Transition
+FSR/2 – 3/2 LSB
1, 2 (2.49817)
011 . . . 110 to 011 . . . 111
+FSR/2 – 5/2 LSBs (2.49695)
011 . . . 110 to 011 . . . 110
+FSR/2 – 7/2 LSBs (2.49573)
011 . . . 110 to 011 . . . 101
AGND + 3/2 LSB (0.00183)
000 . . . 001 to 000 . . . 010
AGND + 1/2 LSB (0.00061)
000 . . . 000 to 000 . . . 001
AGND – 1/2 LSB (–0.00061)
111 . . . 111 to 000 . . . 000
AGND – 3/2 LSB (–0.00183)
111 . . . 110 to 111 . . . 111
–FSR/2 + 5/2 LSB (–2.49695)
100 . . . 010 to 100 . . . 011
–FSR/2 + 3/2 LSB (–2.49817)
100 . . . 001 to 100 . . . 010
–FSR/2 + 1/2 LSB (–2.49939)
100 . . . 000 to 100 . . . 001
NOTES
1FSR is full-scale range and is 5 V with REF IN = +2.5 V.
21 LSB = FSR/4096 = 1.22 mV with REF IN = +2.5 V.
相關(guān)PDF資料
PDF描述
MS3102R24-12P CONN RCPT 5POS BOX MNT W/PINS
AD7701BNZ IC ADC 16BIT LC2MOS MONO 20-DIP
AD7824BQ IC ADC 8BIT LC2MOS 4CH HS 24CDIP
UP050B121K-KEC CAP CER 120PF 50V 10% AXIAL
AD7710ANZ IC ADC SIGNAL CONDITIONING 24DIP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7892BNZ-2 功能描述:IC ADC 12BIT LP 500KSPS 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝: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
AD7892BNZ-3 功能描述:IC ADC 12BIT LP 600KSPS 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝: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
AD7892BR-1 功能描述:IC ADC 12BIT 5V 500KSPS 24-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝: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
AD7892BR-1REEL 功能描述:IC ADC 12BIT LP 500KSPS 24-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝: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
AD7892BR-1Z 制造商:Analog Devices 功能描述:ADC 12BIT 500KSPS 1LSB 24S 制造商:Analog Devices 功能描述:ADC, 12BIT, 500KSPS, 1LSB, 24SOIC; Resolution (Bits):12bit; Sampling Rate:500kSPS; Supply Voltage Type:Single; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; Supply Current:18mA; Digital IC Case Style:SOIC; No. of Pins:24; Input;RoHS Compliant: Yes
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*