參數(shù)資料
型號： ADS7945SRTET
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
文件頁數(shù)： 23/49頁
文件大?。?/td> 1322K
代理商： ADS7945SRTET
SBAS539B
– JUNE 2011 – REVISED SEPTEMBER 2011
ELECTRICAL CHARACTERISTICS: ADS7945 (Differential)
Minimum/maximum specifications at TA = –40°C to +125°C, AVDD = 2.7 V to 5.25 V, DVDD = 1.65 V to AVDD, input
common-mode = VREF/2 ± 0.2, and fSAMPLE = 2 MSPS, unless otherwise noted.
Typical specifications at TA = +25°C, AVDD = 5 V, DVDD = 1.8 V, input common-mode = VREF/2 ± 0.2, and fSAMPLE = 2 MSPS.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG INPUT
Full-scale input span(1)
AINxP
– AINxN
–VREF
VREF
V
AIN0P, AIN1P
–0.2
AVDD + 0.2
V
Absolute input range
AIN0N, AIN1N
–0.2
AVDD + 0.2
V
Input common-mode range(2)
(AINxP + AINxN)/2
VREF/2 ± 0.2
V
Input capacitance(3)
32
pF
Input leakage current
At +125
°C
1.5
nA
SYSTEM PERFORMANCE
Resolution
14
Bits
No missing codes
14
Bits
Integral linearity
–1.5
±0.8
1.5
LSB(4)
Differential linearity
–1
±0.8
1.5
LSB
Offset error(5)
–4
±1.5
4
LSB
Gain error
–4
±1.5
4
LSB
Transition noise
25
VRMS
Power-supply rejection
With 500 Hz sine wave on AVDD
60
dB
SAMPLING DYNAMICS
Conversion time
16
SCLK
Acquisition time
80
ns
Maximum sample rate (throughput rate)
40 MHz SCLK with a 16-clock frame
2
MSPS
Aperture delay(6)
10
ns
Aperture jitter(6)
10
ps
Step response(6)(3)
80
ns
DYNAMIC CHARACTERISTICS
Total harmonic distortion (THD)(7)
20 kHz, VREF = 4.0 V
–92
dB
20 kHz, VREF = 4.0 V
82
84
dB
Signal-to-noise ratio (SNR)
100 kHz, VREF = 4.0 V
83
dB
Signal-to-noise and distorion ratio (SINAD)
20 kHz, VREF = 4.0 V
83.5
dB
Spurious-free dynamic range (SFDR)
20 kHz, VREF = 4.0 V
94
dB
Full-power bandwidth(8)
At
–3 dB
15
MHz
(1)
Ideal input span; does not include gain or offset error.
(2)
Refer to the Input Common-Mode Range section in Application Information.
(3)
Refer to Figure 76 for sampling circuit details.
(4)
LSB means least significant bit.
(5)
Measured relative to an ideal full-scale input.
(6)
Ensured by simulation.
(7)
Calculated on the first nine harmonics of the input frequency.
(8)
Indicates signal bandwidth for undersampling applications.
Copyright
2011, Texas Instruments Incorporated
3
Product Folder Link(s): ADS7945 ADS7946
相關(guān)PDF資料
PDF描述
ADS7953SBRHBT 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32
ADS7953SRHBT 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32
ADS803E 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
ADS8342IBPFBTG4 4-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
ADS8412IPFBTG4 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7947 制造商:TI 制造商全稱:Texas Instruments 功能描述:12/10/8-Bit 2MSPS, Dual-Channel Unipolar Pseudo-Differential Ultralow-Power SAR Analog-to-Digital Converters
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*