參數(shù)資料
型號(hào)： ADS8507I
英文描述： 16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
中文描述： 16位40 kSPS的低功耗采樣模擬到數(shù)字轉(zhuǎn)換的內(nèi)部基準(zhǔn)，并行/串行接口
文件頁(yè)數(shù)： 23/32頁(yè)
文件大小： 738K
代理商： ADS8507I
www.ti.com
+ Full-Scale
Digital Output
Analog Input
Full-Scale
+ Full-Scale
Digital Output
Full-Scale
Analog Input
(a) Bipolar
(b) Unipolar
Typical Transfer Functions With External Resistors.
Typical Transfer Functions Without External Resistors.
V
IN
200
39.8 k
9.9 k
33.5 k
100
+ 5 V
+ 2.5 V
20 k
40 k
+ 2.5 V
CDAC
(0.3125 V to 2.8125 V)
V
IN
200
39.8 k
9.9 k
33.5 k
100
+ 2.5 V
20 k
40 k
+ 2.5 V
CDAC
(0.3125 V to 2.8125 V)
V
IN
200
39.8 k
9.9 k
33.5 k
100
+ 2.5 V
20 k
40 k
+ 2.5 V
CDAC
(0.3125 V to 2.8125 V)
ADS8507
SLAS381–DECEMBER 2006
Figure 44. Typical Transfer Functions With and Without External Resistors
To further analyze the effects of removing any combination of the external resistors, consider
Figure 45
. The
combination of the external and the internal resistors form a voltage divider which reduces the input signal to a
0.3125-V to 2.8125-V input range at the capacitor digital-to-analog converter (CDAC). The internal resistors are
laser trimmed to high relative accuracy to meet full-scale specifications. The actual input impedance of the
internal resistor network looking into pin 1 or pin 3 however, is only accurate to ±20% due to process variations.
This should be taken into account when determining the effects of removing the external resistors.
Figure 45. Circuit Diagrams Showing External and Internal Resistors
23
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相關(guān)PDF資料
PDF描述
ADS8507IB 16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8507IBDW 16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8507IBDWG4 16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8507IBDWR 16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8507IBDWRG4 16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS8507IB 制造商:BB 制造商全稱(chēng):BB 功能描述:16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8507IBDW 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 40KSPS 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
ADS8507IBDWG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 40KSPS 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
ADS8507IBDWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 40KSPS 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
ADS8507IBDWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 40KSPS 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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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