- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10675 > AS1975-T (ams)IC COMPARATOR QUAD O-D 14-TSSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | AS1975-T |
| 廠商： | ams |
| 文件頁(yè)數(shù)： | 3/19頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC COMPARATOR QUAD O-D 14-TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 通用 |
| 元件數(shù)： | 4 |
| 輸出類型： | CMOS，開(kāi)路漏極，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）： | 64µA |
| CMRR, PSRR（標(biāo)準(zhǔn)）： | 80dB CMRR，80dB PSRR |
| 傳輸延遲（最大）： | 400ns |
| 磁滯： | ±3mV |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 14-TSSOP（0.173"，4.40mm 寬） |
| 安裝類型： | 表面貼裝 |
| 包裝： | 帶卷 (TR) |
第1頁(yè)第2頁(yè)當(dāng)前第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)
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-JWK-MY-F1 | CONVERTER MOD DC/DC 40V 50W |
| VI-B1W-MX-F3 | CONVERTER MOD DC/DC 5.5V 75W |
| LTC2410CGN#PBF | IC ADC 24BIT DIFF INP/REF 16SSOP |
| VI-JWH-MY-F4 | CONVERTER MOD DC/DC 52V 50W |
| AS1974-T | IC COMPARATOR QUAD P/P 14-TSSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1976 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Ultra-Low Current, 1.8V Comparators |
| AS1976_1 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Ultra-Low Current, 1.8V Comparators |
| AS19760FLF | 制造商:TT Electronics / IRC 功能描述:AS19760FLF |
| AS19760HLF | 制造商:TT Electronics / IRC 功能描述:AS19760HLF |
| AS19760JLF | 制造商:TT Electronics / IRC 功能描述:AS19760JLF |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。