參數(shù)資料
型號(hào)： ADS7888SDBVR
英文描述： 10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
中文描述： 10-/8-Bit，1.25 MSPS的，微功耗，微型特區(qū)的模擬數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù)： 1/23頁(yè)
文件大小： 510K
代理商： ADS7888SDBVR
FEATURES
1.25-MHz Sample Rate Serial Device
10-Bit Resolution – ADS7887
8-Bit Resolution – ADS7888
Zero Latency
25-MHz Serial Interface
Supply Range: 2.35 V to 5.25 V
Typical Power Dissipation at 1.25 MSPS:
– 3.8 mW at 3-V V
DD
– 8 mw at 5-V V
DD
±
0.35 LSB INL, DNL – ADS7887
±
0.15 LSB INL,
±
0.1 LSB DNL – ADS7888
61dB SINAD, -84 dB THD – ADSA7887
49.5 dB SINAD, -67.5 dB THD – ADS7888
Unipolar Input Range: 0 V to V
DD
Power Down Current: 1 μA
Wide Input Bandwidth: 15 MHz at 3 dB
6-Pin SOT23 and SC70 Packages
APPLICATIONS
Base Band Converters in Radio Communi-
cation
Motor Current/Bus Voltage Sensors in Digital
Drives
Optical Networking (DWDM, MEMS Based
Switching)
Optical Sensors
Battery Powered Systems
Medical Instrumentations
High-Speed Data Acquisition Systems
High-Speed Closed-Loop Systems
DESCRIPTION
The ADS7887 is a 10-bit, 1.25-MSPS analog-to-digital converter (ADC), and the ADS7888 is a 8-bit, 1.25-MSPS
ADC. The devices include a capacitor based SAR A/D converter with inherent sample and hold. The serial
interface in each device is controlled by the CS and SCLK signals for glueless connections with microprocessors
and DSPs. The input signal is sampled with the falling edge of CS, and SCLK is used for conversion and serial
data output.
ADS7887
ADS7888
SLAS468–JUNE 2005
10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE
SAR ANALOG-TO-DIGITAL CONVERTERS
The devices operate from a wide supply range from 2.35 V to 5.25 V. The low power consumption of the devices
make them suitable for battery-powered applications. The devices also include a power saving powerdown
feature for when the devices are operated at lower conversion speeds.
The high level of the digital input to the device is not limited to device V
. This means the digital input can go as
high as 5.25 V when device supply is 2.35 V. This feature is useful when digital signals are coming from other
circuit with different supply levels. Also this relaxes restriction on power up sequencing.
The ADS7887 and ADS7888 are available in 6-pin SOT23 and SC70 packages and are specified for operation
from -40°C to 125°C.
Micro-Power Miniature SAR Converter Family
BIT
< 300 KSPS
300 KSPS – 1.25 MSPS
ADS7886 (2.35 V
DD
to 5.25 V
DD
)
ADS7887 (2.35 V
DD
to 5.25 V
DD
)
ADS7888 (2.35 V
DD
to 5.25 V
DD
)
12-Bit
10-Bit
8-Bit
ADS7866 (1.2 V
DD
to 3.6 V
DD
)
ADS7867 (1.2 V
DD
to 3.6 V
DD
)
ADS7868 (1.2 V
DD
to 3.6 V
DD
)
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 2005, Texas Instruments Incorporated
相關(guān)PDF資料
PDF描述
ADS7888SDBVT 10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
ADS7888SDBVTG4 10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
ADS7888SDCKR 10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
ADS7888SDCKT 10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
ADS7888 10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7888SDBVT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2.35V-5.25V 8 Bit 1.25MSPS Serial 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
ADS7888SDBVTG4 制造商:BB 制造商全稱:BB 功能描述:10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
ADS7888SDCKR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2.35V-5.25V 8 Bit 1.25MSPS Serial 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
ADS7888SDCKT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2.35V-5.25V 8 Bit 1.25MSPS Serial 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
ADS7888SDCKTG4 制造商:BB 制造商全稱:BB 功能描述:10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
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