- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381305 > AS1533-T (AUSTRIAMICROSYSTEMS AG) 12-Bit, 4-CH, ADC, 300ksps; Package Type: TSSOP-16 PDF資料下載
參數(shù)資料
| 型號： | AS1533-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | ADC |
| 英文描述： | 12-Bit, 4-CH, ADC, 300ksps; Package Type: TSSOP-16 |
| 封裝： | TSSOP-16 |
| 文件頁數(shù)： | 21/28頁 |
| 文件大?。?/td> | 920K |
| 代理商： | AS1533-T |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁當前第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
www.austriamicrosystems.com
Revision 1.00
21 - 28
AS1532/AS1533
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 12-bit accuracy, 9 time constants (1.8ms) are required after power-up if the bypass capacitor
is fully discharged between conversions. Waiting this 1.8ms 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 AS1533 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 (AS1533)
Figure 31. Average Supply Current vs. Sampling Rate (AS1533, FULLPD, and External Reference)
Reference
The AS1532/AS1533 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.
Additionally the bandgap voltage can be adjusted about ±100mV by forcing a voltage to the REFADJ pin. The REFADJ
input impedance is typically 17k
Ω
.
Figure 32
shows a possible arrangement.
DIN
1
0
1
1
1
0
0
0
0
Full Power-
Down
Reduced-
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 |
|---|---|
| AS1538-BTST | 12-bit, 8-CH, 50ksps ADC, I2C; Package Type: TSSOP-16 |
| AS1539-BTST | 10-bit, 8-CH, 50ksps ADC, I2C; Package Type: TSSOP-16; Temperature Range: -40 - +85 °C; Output Interface: I"C; Supply Voltage: 2,70-5,50 |
| AS1542-BTST | 12-bit 16-CH 1Msps w Sequencer; Package Type: TSSOP-28 |
| AS1543-BQFT | 12-bit 8-CH 1Msps w Sequencer; Package Type: TQFN(4x4)-20 |
| AS1545-BQFT | Dual 12-bit, 12-CH, 1Msps; Package Type: TQFN(5x5)-32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1534 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:12-bit, 8-Channel, Low-Power, 200ksps A/D Converter |
| AS1536 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:12-Bit, Single Supply, Low-Power, 73ksps A/D Converters |
| AS15360204PD | 制造商:Raltron Electronics Corporation 功能描述: |
| AS15360FLF | 制造商:TT Electronics / IRC 功能描述:AS15360FLF |
| AS15360HLF | 制造商:TT Electronics / IRC 功能描述:AS15360HLF |
發(fā)布緊急采購，3分鐘左右您將得到回復。