參數(shù)資料
型號(hào)： ADS7945SRTER
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC16
封裝： GREEN, PLASTIC, QFN-16
文件頁(yè)數(shù)： 46/49頁(yè)
文件大?。?/td> 1322K
代理商： ADS7945SRTER
SBAS539B
– JUNE 2011 – REVISED SEPTEMBER 2011
ELECTRICAL CHARACTERISTICS: ADS7946 (Single-Ended) (continued)
Minimum/maximum specifications at TA = –40°C to +125°C, AVDD = 2.7 V to 5.25 V, DVDD = 1.65 V to AVDD,
and fSAMPLE = 2 MSPS, unless otherwise noted.
Typical specifications at TA = +25°C, AVDD = 5 V, DVDD = 1.8 V, and fSAMPLE = 2 MSPS.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
POWER-SUPPLY REQUIREMENTS
AVDD
2.7
3.3
5.25
V
DVDD
1.65
3.3
AVDD
V
AVDD = 3.3 V, fSAMPLE = 2 MSPS
3.5
4
mA
IDYNAMIC
AVDD = 5 V, fSAMPLE = 2 MSPS
4
5
mA
AVDD supply current
AVDD = 3.3 V, SCLK off
2.3
mA
ISTATIC
AVDD = 5 V, SCLK off
2.5
3
mA
DVDD = 3.3 V, fSAMPLE = 2 MSPS,
DVDD supply current(8)
750
A
SDO load 20 pF
IPD-DYNAMIC
SCLK = 40 MHz
550
A
Power-down state
AVDD supply current
IPD-STATIC
SCLK off
2.5
A
Power-up time
From power-down state using PDEN pin
1
s
TEMPERATURE RANGE
Specified performance
–40
+125
°C
(8)
DVDD consumes only dynamic current. IDVDD = CLOAD × DVDD × number of 0→1 transitions in SDO × fSAMPLE.
This is a load-dependent current and there is no DVDD current when the output is not toggling.
THERMAL INFORMATION
ADS7945/6
THERMAL METRIC(1)
RTE
UNITS
16 PINS
θJA
Junction-to-ambient thermal resistance
54.3
θJCtop
Junction-to-case (top) thermal resistance
53.7
θJB
Junction-to-board thermal resistance
19.2
°C/W
ψJT
Junction-to-top characterization parameter
0.3
ψJB
Junction-to-board characterization parameter
14.5
θJCbot
Junction-to-case (bottom) thermal resistance
5.2
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
6
Copyright
2011, Texas Instruments Incorporated
Product Folder Link(s): ADS7945 ADS7946
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7945SRTET 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14B,2MSPS,DUAL-CH, UNIPOLAR,DIF,SAR 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
ADS7946 制造商:TI 制造商全稱:Texas Instruments 功能描述:14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital Converters
ADS7946EVM-PDK 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 ADS7946 PERF DEM KIT RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
ADS7946SRTER 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14B,2MSPS,DUAL-CH, UNIP,PSE-DIF,SAR 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
ADS7946SRTET 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14B,2MSPS,DUAL-CH, UNIP,PSE-DIF,SAR 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
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