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參數(shù)資料
| 型號： | AS1520-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | ADC |
| 英文描述： | 10-Bit, 8-Ch, 400ksps, ADC; Package Type: TSSOP-20 |
| 封裝： | TSSOP-20 |
| 文件頁數(shù)： | 21/29頁 |
| 文件大?。?/td> | 1043K |
| 代理商： | AS1520-T |
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Revision 1.00
21 - 29
AS1520/AS1521
Data Sheet
- Detailed Description
A 0.01μF bypass capacitor plus the internal 17k
Ω
reference resistor at REFADJ form an R/C filter with a 170μs time
constant. To achieve full 10-bit accuracy, 7 time constants (1.4ms) are required after power-up if the bypass capacitor
is fully discharged between conversions. Waiting this 1.4ms in reduced-power mode instead of normal operation mode
can further reduce power consumption. This is achieved by using the sequence shown in
Figure 30 on page 21
.
Figure 31 on page 21
shows the AS1521 power consumption for conversions using full power-down mode (PD1 = PD0
= 0
(see Table 12)
, an external reference, and the maximum clock speed. One dummy conversion to power-up the
device is required, but no wait-time is necessary to start the second conversion, thereby achieving lower power con-
sumption up to the full sampling rate.
Figure 30. Full Power-Down Timing Waveforms (AS1521)
Figure 31. Average Supply Current vs. Sampling Rate (AS1521, FULLPD, and External Reference)
Reference
The AS1520/AS1521 can operate with the internal or an external reference.
Internal Reference
The internal reference is selected by placing a capacitor between REFADJ and GND. The internally trimmed 1.22V
bandgap voltage available at REFADJ is buffered with a gain of 2.045V/V to pin REF, where 2.5V are available. A
decoupling capacitor is needed at pin REF.
DIN
1
0
1
1
1
0
0
0
0
Full Power-
Down
Reduced-
Power Mode
REF
1
REFADJ
I
VDD1
+I
VDD2
+I
VDD3
Full Power-
Down
1.22V
2.5V
2.2mA
2.2mA
2.2mA
2.5V
1.22V
0mA
0mA
0.4mA
γ
= R/C = 17
Ω
k x 0.01μF
Full Power-
Down
Normal Mode
Conversion
Normal Mode
Dummy
Conversion
Reduced
Power Mode
Normal Mode
Conversion
Full Power-
Down
1 Channel
0.1
100
100000
0.001
0.01
0.1
1
10
100
Sampling Rate (ksps)
S
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS1521-T | 10-Bit, 8-Ch, 300ksps, ADC; Package Type: TSSOP-20 |
| AS1523-T | 10-Bit, 4-Ch, 300ksps, ADC; Package Type: TSSOP-16 |
| AS1524-BTDT | μPower 12-Bit 1-CH 150ksps TD; Package Type: TDFN(3x3)-8 |
| AS1526-BSOT | 10-bit ADC 1-CH, 73ksps intRef; Package Type: SOIC-8 |
| AS1527-BSOT | 10-bit ADC, 1-Channel, 73ksps; Package Type: SOIC-8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1521 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:10-Bit, Single-Supply, Low-Power, 400/300ksps, 8-Channel A/D Converters |
| AS1521BTST | 制造商:AMS 功能描述:IC ADC 10BIT 300KSPS TSSOP-20 制造商:AMS 功能描述:IC, ADC, 10BIT, 300KSPS, TSSOP-20; Resolution (Bits):10bit; Sampling Rate:300kSPS; Supply Voltage Type:Single; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Supply Current:2.7mA; Digital IC Case Style:TSSOP; No. of Pins:20 ;RoHS Compliant: Yes |
| AS1521-BTST | 功能描述:IC ADC 10BIT 8CH 300K 20-TSSOP 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 個單端，單極 |
| AS1521-BTSU | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:10-Bit, Single-Supply, Low-Power, 400/300ksps, 8-Channel A/D Converters |
| AS1521-T | 制造商:ams 功能描述:IC ADC 10BIT 8CH 300K 20-TSSOP 制造商:ams 功能描述:T&R / TSSOP 16 |
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