Data Sheet - Ap p lica tio n In fo r m a tio n" />
參數(shù)資料
型號(hào): AS1972-T
廠商: ams
文件頁(yè)數(shù): 3/19頁(yè)
文件大?。?/td> 0K
描述: IC COMPARATOR DUAL P/P 8-MSOP
標(biāo)準(zhǔn)包裝: 2,500
類型: 通用
元件數(shù): 2
輸出類型: CMOS,推挽式,滿擺幅
電壓 - 電源,單路/雙路(±): 2.5 V ~ 5.5 V,±1.25 V ~ 2.75 V
電壓 - 輸入偏移(最小值): 6mV @ 5.5V
電流 - 輸入偏壓(最小值): 1pA @ 5.5V
電流 - 靜態(tài)(最大值): 32µA
CMRR, PSRR(標(biāo)準(zhǔn)): 80dB CMRR,80dB PSRR
傳輸延遲(最大): 420ns
磁滯: ±3mV
工作溫度: -40°C ~ 85°C
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
安裝類型: 表面貼裝
包裝: 帶卷 (TR)
www.austriamicrosystems.com
Revision 1.02
10 - 18
AS1970
Data Sheet - Ap p lica tio n In fo r m a tio n
9 Application Information
Figure 17 shows a typical application circuit for the AS1970 - AS1975 comparators.
Figure 17. Typical Application Diagram – Threshold Detector
Hysteresis (AS1970/AS1972/AS1974)
The AS1970/AS1972/AS1974 have 3mV internal hysteresis. Additional hysteresis can be generated with three resis-
tors using positive feedback (Figure 18), however this method also slows hysteresis response time.
Figure 18. Additional Hysteresis AS1970/AS1972/AS1974
Resistor Selection Example
For the circuit shown in Figure 18, the following steps can be used to calculate values for R1, R2, and R3.
1. Select R3 first. The current through R3 should be at least 1A to minimize errors caused by leakage current. The
current through R3 at the trip point is:
(VREF - VOUT)/R3
(EQ 1)
The two possible output states in solving for R3 yields these two formulas:
R3 = VREF/1A
(EQ 2)
R3 = (VREF - VCC)/1A
(EQ 3)
For example, for VREF = 1.2V and VCC = 5V, the two R3 resistor values are 1.2M
Ω and 3.8MΩ. Use the smaller of
the two resulting resistor values; in this case a standard 1.2M
Ω resistor should be used for R3.
2. Choose the hysteresis band (VHB). For this example, use VHB = 50mV.
3. Calculate R1 according to the following equation:
R1 = R3(VHB/VCC)(EQ 4)
Substituting the example values for R3 and VHB gives:
R1 = 1.2M
Ω(50mV/5V) = 12kΩ
AS1970 - AS1975
RPULLUP
AS1971/AS1973/AS1975 only
VIN
4
IN-
1
OUT
2
VCC
5
VEE
3
IN+
OUT
R1
R3
VCC
VIN
VREF
R2
+
VEE
VCC
ams
AG
Technical
content
still
valid
相關(guān)PDF資料
PDF描述
VI-JWH-MY-F2 CONVERTER MOD DC/DC 52V 50W
VI-2T2-IX-B1 CONVERTER MOD DC/DC 15V 75W
VI-21X-MX CONVERTER MOD DC/DC 5.2V 75W
KA339ADTF IC COMPARATOR QUAD 14-SOP
LM239AMX IC COMPARATOR QUAD 14-SOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AS1973 功能描述:校驗(yàn)器 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓(最大值):6 mV 電源電流(最大值):1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
AS197-306 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AS197-306:PHEMT GaAs IC High Power SP2T and SP3T S|DC-6 GHz Plastic Packaged and Chip|SPST
AS197-306LF 制造商:SKYWORKS 制造商全稱:SKYWORKS 功能描述:PHEMT GaAs IC High-Power SP2T and SP3T Switch 0.1-2.5 GHz
AS1973-T 功能描述:IC COMPARATOR DUAL O-D 8-MSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS,推挽式,滿擺幅,TTL 電壓 - 電源,單路/雙路(±):2.5 V ~ 5.5 V,±1.25 V ~ 2.75 V 電壓 - 輸入偏移(最小值):5mV @ 5.5V 電流 - 輸入偏壓(最小值):1pA @ 5.5V 電流 - 輸出(標(biāo)準(zhǔn)):- 電流 - 靜態(tài)(最大值):24µA CMRR, PSRR(標(biāo)準(zhǔn)):80dB CMRR,80dB PSRR 傳輸延遲(最大):450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA,CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586
AS1974 功能描述:校驗(yàn)器 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓(最大值):6 mV 電源電流(最大值):1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel