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參數資料
| 型號： | ADS7812U/1KE4 |
| 廠商： | Texas Instruments |
| 文件頁數： | 1/24頁 |
| 文件大小： | 0K |
| 描述： | IC 12BIT 35MW SER OUT ADC 16SOIC |
| 標準包裝： | 1,000 |
| 位數： | 12 |
| 采樣率（每秒）： | 40k |
| 數據接口： | 串行，SPI? |
| 轉換器數目： | 1 |
| 功率耗散（最大）： | 35mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 16-SOIC |
| 包裝： | 帶卷 (TR) |
| 輸入數目和類型： | 3 個單端，單極；3 個單端，雙極 |
Low-Power, Serial 12-Bit Sampling
ANALOG-TO-DIGITAL CONVERTER
DESCRIPTION
The ADS7812 is a low-power, single +5V supply, 12-bit
sampling analog-to-digital converter. It contains a complete
12-bit capacitor-based SAR A/D with a sample/hold, clock,
reference, and serial data interface.
The converter can be configured for a variety of input ranges
including
±10V, ±5V, 0V to 10V, and 0.5V to 4.5V. A high
impedance 0.3V to 2.8V input range is also available (input
impedance > 10M
). For most input ranges, the input
voltage can swing to +16.5V or –16.5V without damage to
the converter.
A flexible SPI compatible serial interface allows data to be
synchronized to an internal or external clock. The ADS7812
is specified at a 40kHz sampling rate over the –40
°C to
+85
°C temperature range. It is available in a 0.3" DIP-16 or
an SO-16 package.
FEATURES
q 20
s max CONVERSION TIME
q SINGLE +5V SUPPLY OPERATION
q PIN-COMPATIBLE WITH 16-BIT ADS7813
q EASY-TO-USE SERIAL INTERFACE
q 0.3" DIP-16 AND SO-16
q
±0.5LSB max INL AND DNL
q 72dB min SINAD
q USES INTERNAL OR EXTERNAL
REFERENCE
q MULTIPLE INPUT RANGES
q 35mW max POWER DISSIPATION
q NO MISSING CODES
q 50
W POWER DOWN MODE
ADS7812
ADS7
812
8k
(1)
CDAC
4k
(1)
40k
(1)
20k
(1)
Internal
+2.5V Ref
Clock
EXT/INT
DATACLK
DATA
Successive Approximation Register and Control Logic
Serial
Data
Out
Comparator
Buffer
BUSY
PWRD
CONV
R1
IN
R3
IN
REF
BUF
CAP
CS
R2
IN
NOTE: (1) Actual value may vary ±30%.
APPLICATIONS
q DATA ACQUISITION SYSTEMS
q INDUSTRIAL CONTROL
q TEST EQUIPMENT
q DIGITAL SIGNAL PROCESSING
ADS7812
SBAS042A – MARCH 1997 – REVISED SEPTEMBER 2003
www.ti.com
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 1997-2003, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADS7812UB | 功能描述:模數轉換器 - ADC Low-Power Serial 12-Bit Sampling RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS7812UB/1K | 功能描述:模數轉換器 - ADC Low-Power Serial 12-Bit Sampling RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS7812UB/1KE4 | 功能描述:模數轉換器 - ADC Low-Power Serial 12-Bit Sampling RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS7812UB/1KG4 | 功能描述:模數轉換器 - ADC Low-Pwr Serial 12B Sampling ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS7812UBE4 | 功能描述:模數轉換器 - ADC Low-Power Serial 12-Bit Sampling RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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