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參數(shù)資料
| 型號： | ADS8504IBDWRG4 |
| 英文描述： | 12-BIT 250-KSPS SAMPLING CMOS ANALOG-TO-DIGITAL CONVERTER |
| 中文描述： | 12位250 kSPS的采樣CMOS模擬數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 12/19頁 |
| 文件大?。?/td> | 361K |
| 代理商： | ADS8504IBDWRG4 |
www.ti.com
HiZ
High Byte
Low Byte
HiZ
HiZ
Low Byte
High Byte
HiZ
Pins 6 13
Pins 15 18
BYTE
CS
R/C
t
su
t
su
t
en
t
d4
t
dis
INPUT RANGES
The ADS8504 offers a standard ±10-V input range.
Figure 23
shows the necessary circuit connections for the
ADS8504 with and without hardware trim. Offset and full-scale error specifications are tested and specified with
the fixed resistors shown in
Figure 23
(b). Full-scale error includes offset and gain errors measured at both +FS
and -FS. Adjustments for offset and gain are described in the Calibration section of this data sheet.
or
GND
GND
GND
GND
Pin1
Pin7
Pin2
Pin3
Pin4
Pin 6
15V
+15V
Vin
2.2 F
100 nF
2 k
22 pF
2 k
22 pF
200
33.2 k
2.2 F
2.2 F
100 nF
2.2 F
VIN
AGND1
REF
CAP
ADS8504
+
AGND2
DGND
GND
GND
ADS8504
SLAS434–JUNE 2005
Figure 21. Using CS and BYTE to Control Data Bus
The offset and gain are adjusted internally to allow external trimming with a single supply. The external resistors
compensate for this adjustment and can be left out if the offset and gain are corrected in software (refer to the
Calibration section).
The nominal input impedance of 11.5 k
results from the combination of the internal resistor network shown on
the front page of the product data sheet and the external resistors. The input resistor divider network provides
inherent overvoltage protection assured to at least ±25 V. The 1% resistors used for the external circuitry do not
compromise the accuracy or drift of the converter. They have little influence relative to the internal resistors, and
tighter tolerances are not required.
The input signal must be referenced to AGND1. This will minimize the ground loop problem typical to analog
designs. The analog input should be driven by a low impedance source. A typical driving circuit using OPA627 or
OPA132 is shown in Figure 6.
Figure 22. Typical Driving Circuitry (±10 V, No Trim)
12
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| ADS8507 | 16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE |
| ADS8507I | 16-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE |
| 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 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS8505 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:16-BIT 250-KSPS SAMPLING CMOS ANALOG-TO-DIGITAL CONVERTER |
| ADS8505EVM | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 ADS8505 Eval Mod 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 |
| ADS8505I | 制造商:TI 制造商全稱:Texas Instruments 功能描述:16-BIT 250-KSPS SAMPLING CMOS ANALOG-TO-DIGITAL CONVERTER |
| ADS8505IB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:16-BIT 250-KSPS SAMPLING CMOS ANALOG-TO-DIGITAL CONVERTER |
| ADS8505IBDB | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 250kHz CMOS w/Parallel Interface 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 |
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