- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381306 > AS1542-BTST (AUSTRIAMICROSYSTEMS AG) 12-bit 16-CH 1Msps w Sequencer; Package Type: TSSOP-28 PDF資料下載
參數(shù)資料
| 型號(hào)： | AS1542-BTST |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | ADC |
| 英文描述： | 12-bit 16-CH 1Msps w Sequencer; Package Type: TSSOP-28 |
| 封裝： | TSSOP-28 |
| 文件頁數(shù)： | 26/29頁 |
| 文件大小： | 964K |
| 代理商： | AS1542-BTST |
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頁第21頁第22頁第23頁第24頁第25頁當(dāng)前第26頁第27頁第28頁第29頁
www.austriamicrosystems.com
Revision 1.00
26 - 29
AS1542
Data Sheet - Application Information
Grounding and Layout Considerations
The AS1542 has excellent immunity to noise on the power supplies as can be seen by the
PSRR vs. Supply Signal
Frequency graph on page 11
, however, the following should be considered regarding grounding and PCB layout:
- The PCB should be designed such that the analog and digital sections are confined to separate areas of the
board. This facilitates the use of ground planes that can be separated easily. A minimum etch technique is gener-
ally best for ground planes as it gives the best shielding.
- Pins AGND and GND should be tied to the analog ground plane. Pin DGND should be tied to the digital ground
plane.
- Digital and analog ground planes should be joined at only one place. If the AS1542 is in a system where multiple
devices require an AGND-to-DGND connection, the connection should be made at one point – a star ground
point which should be established as close as possible to the AS1542.
- Avoid running digital lines under the device as these will couple noise onto the die.
- The analog ground plane should be allowed to run under the AS1542 to avoid noise coupling.
- The power supply lines to the AS1542 should use as large a trace as possible to provide low-impedance paths
and reduce the effects of glitches on the power supply line.
- Fast-switching signals (e.g., clocks) should be shielded with digital ground to avoid radiating noise to other sec-
tions of the PCB.
- Clock signals should not be run near the analog inputs.
- Avoid crossover of digital and analog signals.
- Traces on opposite sides of the board should run at right angles to each other. This will reduce the effects of
feedthrough through the board. A microstrip technique is the best but is not always possible with a double-sided
board. In this technique, the component side of the board is dedicated to ground planes while signals are placed
on the solder side.
- All analog input channels and the reference input voltage should be decoupled to the ground pin of AGND.
- All analog supplies should be decoupled with 10μF tantalum in parallel with 0.1μF capacitors to GND. To achieve
the best from these decoupling components, they must be placed as close as possible to the device, ideally right
up against the device. The 0.1μF capacitors should be low ESR and ESI (e.g., common ceramic or surface
mount types) which provide a low impedance path to ground at high frequencies to handle transient currents due
to internal logic switching.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| AS1701-T | 1.6W Audio Power Amplifiers ; Package Type: MSOP-8; Shutdown: Active High |
| AS1706-T | 1.6W Audio Power Amplifiers; Package Type: MSOP-8; Shutdown: Active Low |
| AS1702-T | 1.8W diff audio amp mono, adj.; Package Type: MSOP-10; Miscellaneous: adj. Gain |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1542-BTSU | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| AS1543 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:8/4-Channel, 1 Msps, 12-Bit ADC with Sequencer |
| AS1543BQFT | 制造商:AMS 功能描述:IC ADC 12BIT 1MSPS TQFN-20 制造商:AMS 功能描述:IC, ADC, 12BIT, 1MSPS, TQFN-20; Resolution (Bits):12bit; Sampling Rate:1MSPS; Supply Voltage Type:Single; Supply Voltage Min:2.75V; Supply Voltage Max:5.25V; Supply Current:3mA; Digital IC Case Style:TQFN; No. of Pins:20; DNL:1.2LSB;RoHS Compliant: Yes |
| AS1543-BQFT | 功能描述:IC ADC 12BIT 8CH 1M 20-TQFN 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(gè)單端，單極 |
| AS1543-BTST | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:8/4-Channel, 1 Msps, 12-Bit ADC with Sequencer |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。