欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數(shù)資料
型號: AD7864BS-1
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: SWITCH SLIDE DP3T RT ANG L=6MM
中文描述: 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP44
封裝: PLASTIC, MO-112-AA, MQFP-44
文件頁數(shù): 9/19頁
文件大小: 214K
代理商: AD7864BS-1
AD7864
–9–
REV. A
AD7864-1
Figure 2 shows the analog input section of the AD7864-1. Each
input can be configured for
±
5 V or
±
10 V operation on the
AD7864-1. For
±
5 V (AD7864-1) operation, the V
INXA
and
V
INXB
inputs are tied together and the input voltage is applied to
both. For
±
10 V (AD7864-1) operation, the V
INXB
input is tied
to AGND and the input voltage is applied to the V
INXA
input.
The V
INXA
and V
INXB
inputs are symmetrical and fully inter-
changeable. Thus for ease of PCB layout on the
±
10 V range,
the input voltage may be applied to the V
INXB
input while the
V
INXA
input is tied to AGND.
2.5V
REFERENCE
T/H
TO ADC
REFERENCE
CIRCUITRY
6k
V
R2
R3
TO INTERNAL
COMPARATOR
AD7864-1
R1
R4
AGND
V
IN1B
V
IN1A
V
REF
Figure 2. AD7864-1 Analog Input Structure
For the AD7864-1, R1 = 6 k
, R2 = 24 k
,
R3 = 24 k
and
R4 = 12 k
. The resistor input stage is followed by the high
input impedance stage of the track/hold amplifier.
The designed code transitions take place midway between suc-
cessive integer LSB values (i.e., 1/2 LSB, 3/2 LSBs, 5/2 LSBs
etc.) LSB size is given by the formula, 1 LSB = FSR/4096. For
the
±
5 V range, 1 LSB = 10 V/4096 = 2.44 mV. For the
±
10 V
range, 1 LSB = 20 V/4096 = 4.88 mV. Output coding is twos
complement binary with 1 LSB = FSR/4096. The ideal input/
output transfer function for the AD7864-1 is shown in Table I.
Table I. Ideal Input/Output Code Table for the AD7864-1
Analog Input
l
+FSR/2 – 3/2 LSB
2
+FSR/2 – 5/2 LSB
+FSR/2 – 7/2 LSB
AGND + 3/2 LSB
AGND + 1/2 LSB
AGND – 1/2 LSB
AGND – 3/2 LSB
–FSR/2 + 5/2 LSB
–FSR/2 + 3/2 LSB
–FSR/2 + 1/2 LSB
Digital Output Code Transition
011 . . . 110 to 011 . . . 111
011 . . . 101 to 011 . . . 110
011 . . . 100 to 011 . . . 101
000 . . . 001 to 000 . . . 010
000 . . . 000 to 000 . . . 001
111 . . . 111 to 000 . . . 000
111 . . . 110 to 111 . . . 111
100 . . . 010 to 100 . . . 011
100 . . . 001 to 100 . . . 010
100 . . . 000 to 100 . . . 001
NOTES
1
FSR is full-scale range and is 20 V for the
±
10 V range and 10 V for the
±
5 V
range, with V
REF
= +2.5 V.
2
1 LSB = FSR/4096 = 4.883 mV (
±
10 V—AD7864-1) and 2.441 mV (
±
5 V—
AD7864-1) with V
REF
= +2.5 V.
AD7864-2
Figure 3 shows the analog input section of the AD7864-2. Each
input can be configured for 0 V to +5 V operation or 0 V to
+2.5 V operation. For 0 V to +5 V operation, the V
INXB
input is
tied to AGND and the input voltage is applied to the V
INXA
input. For 0 V to 2.5 V operation, the V
INXA
and V
INXB
inputs
are tied together and the input voltage is applied to both. The
V
INXA
and V
INXB
inputs are symmetrical and fully interchange-
able. Thus for ease of PCB layout on the 0 V to +5 V range, the
input voltage may be applied to the V
INXB
input while the V
INXA
input is tied to AGND.
For the AD7864-2, R1 = 6 k
and R2 = 6 k
. Once again, the
designed code transitions occur on successive integer LSB
values. Output coding is straight (natural) binary with 1 LSB =
FSR/4096 = 2.5 V/4096 = 0.61 mV, and 5 V/4096 = 1.22 mV,
for the 0 V to 2.5 V and the 0 V to 5 V options respectively.
Table II shows the ideal input and output transfer function for
the AD7864-2.
2.5V
REFERENCE
T/H
TO ADC
REFERENCE
CIRCUITRY
6k
V
R2
TO INTERNAL
COMPARATOR
AD7864-2
R1
V
IN1B
V
IN1A
V
REF
Figure 3. AD7864-2 Analog Input Structure
Table II. Ideal Input/Output Code Table for the AD7864-2
Analog Input
1
+FSR – 3/2 LSB
2
+FSR – 5/2 LSB
+FSR – 7/2 LSB
Digital Output Code Transition
111 . . . 110 to 111 . . . 111
111 . . . 101 to 111 . . . 110
111 . . . 100 to 111 . . . 101
AGND + 5/2 LSB
AGND + 3/2 LSB
AGND + 1/2 LSB
000 . . . 010 to 000 . . . 011
000 . . . 001 to 000 . . . 010
000 . . . 000 to 000 . . . 001
NOTES
1
FSR is full-scale range and is 0 V to 2.5 V and 0 V to 5 V for AD7864-2 with
V
REF
= +2.5 V.
2
1 LSB = FSR/4096 and is 0.61 mV (0 V to 2.5 V) and 1.22 mV (0 V to 5 V) for
AD7864-2 with V
REF
= +2.5 V.
相關(guān)PDF資料
PDF描述
AD7864AS-2 4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC
AD7864AS-3 4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC
AD7864AS IC-SM-12-BIT ADC
AD7865YS-1 Four-Channel, Simultaneous Sampling, Fast, 14-Bit ADC
AD7865YS-2 Four-Channel, Simultaneous Sampling, Fast, 14-Bit ADC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7864BS-1REEL 制造商:Analog Devices 功能描述:ADC Single SAR 520ksps 12-bit Parallel 44-Pin MQFP T/R
AD7864BSZ-1 功能描述:IC ADC 12BIT DUAL 4CHAN 44-MQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率(每秒):20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散(最大):155mW 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:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端,單極;2 個差分,單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD7864BSZ-12 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC
AD7864BSZ-1REEL 功能描述:IC ADC 12BIT DUAL 4CHAN 44-MQFP 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
AD7864BSZ-1REEL2 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC
主站蜘蛛池模板: 会宁县| 彩票| 通许县| 永兴县| 于田县| 科尔| 汶川县| 芜湖县| 四子王旗| 察哈| 太和县| 临安市| 西林县| 台东市| 安庆市| 碌曲县| 衡南县| 民县| 绥江县| 临夏市| 铁力市| 朔州市| 普定县| 镇沅| 时尚| 太仓市| 洪湖市| 广安市| 阿拉善左旗| 玉树县| 田阳县| 抚顺市| 竹北市| 七台河市| 屯昌县| 平阴县| 榕江县| 广水市| 阿尔山市| 犍为县| 临清市|