13 FN7549.2 February 26, 2014 Analog Inputs Some members of the ISL26310, " />
參數(shù)資料
型號(hào)： ISL26313FBZ
廠商： Intersil
文件頁(yè)數(shù)： 5/23頁(yè)
文件大?。?/td> 0K
描述： IC ADC 12BIT SPI/SRL 125K 8SOIC
標(biāo)準(zhǔn)包裝： 980
位數(shù)： 12
采樣率（每秒）： 125k
數(shù)據(jù)接口： 串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 80mW
電壓電源： 單電源
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOIC
包裝： 管件
輸入數(shù)目和類型： 2 個(gè)單端，單極
ISL26310, ISL26311, ISL26312, ISL26313, ISL26314, ISL26315, ISL26319
13
FN7549.2
February 26, 2014
Analog Inputs
Some members of the ISL26310, ISL26311, ISL26312, ISL26313,
ISL26314, ISL26315 and ISL26319 family feature a fully
differential input with a nominal full-scale range equal to twice
the applied VREF voltage. Those devices with differential inputs
have a nominal full scale range equal to twice the applied VREF
voltage. Each input swings VREF volts (peak-to-peak), 180°
out-of-phase from one another for a total differential input of
2*VREF (refer to Figures 23 and 24).
Differential signaling offers several benefits over a single-ended
input, such as:
Doubling of the full-scale input range (and therefore the
dynamic range)
Improved even order harmonic distortion
Better noise immunity due to common mode rejection
Figure 24 shows the relationship between the reference voltage
and the full-scale differential input range for two different values
of VREF. Note that the common-mode input voltage must be
maintained within ±200mV of VREF/2 for differential inputs.
Those devices with singled-ended inputs have a ground-referenced
peak-to-peak input voltage span equal to the reference voltage.
FIGURE 21. IDEAL TRANSFER CHARACTERISTICS, DIFFERENTIAL INPUT
FIGURE 22. IDEAL TRANSFER CHARACTERISTICS, SINGLE-ENDED INPUT
1LSB = 2VREF/4096
100...000
100...001
100...010
111...111
000...000
000...001
011...110
011...111
AD
C
O
DE
ANALOG INPUT
AIN+ – (AIN–)
–V
REF
+ LSB
+VREF
– 1LSB
0V
+VREF
– 1LSB
1LSB = VREF/4096
000...000
000...001
000...010
011...111
100...000
100...001
111...110
111...111
AD
C
O
DE
ANALOG INPUT
0 = +LSB
FS = +VREF – 1LSB
FIGURE 23. DIFFERENTIAL INPUT SIGNALING
ISL2631X/32X
VCM
VREF (P-P)
AIN+
AIN-
FIGURE 24. RELATIONSHIP BETWEEN VREF AND FULL-SCALE
RANGE FOR DIFFERENTIAL INPUTS
3.0
5.0
2.0
1.0
4.0
AIN+
AIN–
2.5Vp-p
VREF = 2.5V
3.0
5.0
2.0
1.0
4.0
AIN+
AIN–
VCM
5Vp-p
VREF = 5V
t
V
t
V
ALLOWABLE VCM RANGE
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參數(shù)描述
ISL26313FBZ-T 功能描述:IC ADC 12BIT SPI/SRL 125K 8SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:250 系列:- 位數(shù):12 采樣率（每秒）:1.8M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:1.82W 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-LQFP 供應(yīng)商設(shè)備封裝:48-LQFP（7x7） 包裝:管件 輸入數(shù)目和類型:2 個(gè)單端，單極
ISL26313FBZ-T7A 功能描述:IC ADC 12BIT SPI/SRL 125K 8SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:250 系列:- 位數(shù):12 采樣率（每秒）:1.8M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:1.82W 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-LQFP 供應(yīng)商設(shè)備封裝:48-LQFP（7x7） 包裝:管件 輸入數(shù)目和類型:2 個(gè)單端，單極
ISL26314 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:12-bit, 125kSPS Low-power ADCs with Single-ended and Differential Inputs and Multiple Input Channels
ISL26314FVZ 制造商:Intersil Corporation 功能描述:ISL26314FVZ 12-BIT, 125KSPS, 4-CHANNEL, DIFFERENTIAL SAR ADC - Rail/Tube
ISL26314FVZ-T 制造商:Intersil Corporation 功能描述:ISL26314FVZ 12-BIT, 125KSPS, 4-CHANNEL, DIFFERENTIAL SAR ADC - Tape and Reel
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