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參數資料
型號: THS1040IPW
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
封裝: GREEN, PLASTIC, TSSOP-28
文件頁數: 14/36頁
文件大小: 751K
代理商: THS1040IPW
THS1040
SLAS290C OCTOBER 2001 REVISED OCTOBER 2004
21
www.ti.com
PRINCIPLES OF OPERATION
onboard reference generator configuration (continued)
_
+
VBG
ADC
References
Buffer A2
MODE =
REFSENSE
AGND
VREF = External
AVDD
_
+
AVDD
2
or AVDD
Figure 28. Drive VREF Mode
operating configuration examples
Figure 29 shows a configuration using the internal ADC references for digitizing a single-ended signal with span
0 V to 2 V. Tying REFSENSE to ground gives 1 V at pin VREF. Tying MODE to AVDD/2 then sets the REFT and
REFB voltages via the internal reference generator for a 2-Vp-p ADC input range. The VREF pin provides the
1-V mid-scale bias voltage required at AIN. VREF should be well decoupled to AGND to prevent
sample-and-hold switching at AIN from corrupting the VREF voltage.
AIN+
AIN
VREF = 1 V
REFB
MODE
REFSENSE
AVDD/2
2 V
0 V
1 V
REFT
20
20
20 pF
10
F
0.1
F
0.1
F
10
F 0.1 F
20 pF
Figure 29. Operating Configuration: 2-V Single-Ended Input, Internal ADC References
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相關代理商/技術參數
參數描述
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THS1040IPWR 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power 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
THS1040IPWRG4 功能描述:模數轉換器 - ADC 10 Bit 40 MSPS Low Power 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
THS1041 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-Bit, 40-MSPS ANALOG-TO-DIGITAL CONVERTER WITH PGA AND CLAMP
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