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參數(shù)資料
| 型號： | AS1521-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | ADC |
| 英文描述： | 10-Bit, 8-Ch, 300ksps, ADC; Package Type: TSSOP-20 |
| 封裝： | TSSOP-20 |
| 文件頁數(shù)： | 22/29頁 |
| 文件大小： | 1043K |
| 代理商： | AS1521-T |
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Revision 1.00
22 - 29
AS1520/AS1521
Data Sheet
- Detailed Description
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.
Figure 32. Reference Adjust Circuit
External Reference
An external reference can be connected directly at pin REF. To use the external reference, the internal buffer must be
disabled by connecting pin REFADJ to pin VDD. The input resistance is typically 15k
Ω
.
During conversion, an external reference at pin REF must deliver up to 350μA DC load current and have 10
Ω
or less
output impedance. If the reference has a higher output impedance or is noisy, bypass it with a 4.7μF capacitor placed
as close to pin REF as possible.
Note:
Using the REFADJ input makes buffering the external reference unnecessary.
C
LOAD
0.01μF
GND
100k
Ω
DGND
24k
Ω
510k
Ω
+3.3V
12
REFADJ
AS1520/
AS1521
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1522 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:10-Bit, Single-Supply, Low-Power, 400/300ksps, 4-Channel A/D Converters |
| AS1522BTST | 制造商:AMS 功能描述:IC ADC 10BIT 400KSPS TSSOP-16 制造商:AMS 功能描述:IC, ADC, 10BIT, 400KSPS, TSSOP-16; Resolution (Bits):10bit; Sampling Rate:400kSPS; Supply Voltage Type:Single; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; Supply Current:3.3mA; Digital IC Case Style:TSSOP; No. of Pins:16 ;RoHS Compliant: Yes |
| AS1522-BTST | 功能描述:IC ADC 10BIT 4CH 400K 16-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 |
| AS1522-T | 制造商:ams 功能描述:IC ADC 10BIT 4CH 400K 16-TSSOP 制造商:ams 功能描述:T&R / TSSOP 16 |
| AS1523 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:10-Bit, Single-Supply, Low-Power, 400/300ksps, 4-Channel A/D Converters |
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