參數(shù)資料
型號(hào)： ADS8413IBRGZTG4
英文描述： 16-BIT, 2-MSPS, LVDS SERIAL INTERFACE, SAR ANALOG-TO-DIGITAL CONVERTER
中文描述： 16位，2 MSPS的LVDS串行接口，SAR類比數(shù)位轉(zhuǎn)換器
文件頁(yè)數(shù)： 22/38頁(yè)
文件大小： 1197K
代理商： ADS8413IBRGZTG4
www.ti.com
REFERENCE
ADS8413
REFM
REFIN
REFOUT
AGND
1 F
0.1 F
ADS8413
REFM
REFIN
REFOUT
AGND
0.1 F
1 F
REF3040
22 F
50
AGND
0.1 F
DIGITAL INTERFACE
ADS8413
SLAS490–OCTOBER 2005
THEORY OF OPERATION (continued)
Care must be taken regarding the absolute analog input voltage. To maintain the linearity of the converter, both
-IN and +IN inputs should be within the limits specified. Outside of these ranges, the converter linearity may not
meet specifications. Care should be taken to ensure that +IN and -IN see the same impedance to the respective
sources. If this is not observed, the two inputs could have different setting times. This may result in offset error,
gain error, and linearity error which changes with temperature and input voltage.
The ADS8413 has a built-in 4.096-V (nominal value) reference. The ADS8413 can also operate with an external
reference. When the internal reference is used, pin 14 (REFOUT) should be connected to pin 13 (REFIN), and a
0.1-
μ
F decoupling capacitor and 1-
μ
F storage capacitor must be connected between pin 14 (REFOUT) and pins
11 and 12 (REFM) (see
Figure 18
). The internal reference of the converter is buffered.
Figure 18. Using Internal Reference
The REFIN pin is also internally buffered. This eliminates the need to put a high bandwidth buffer onboard to
drive the ADC reference and saves system area and power. When an external reference is used, the reference
must be low noise, which can be achieved by the additional bypass capacitor from the REFIN pin to the REFM
pin (see
Figure 19
). REFM must be connected to the analog ground plane.
Figure 19. Using External Reference
TIMING AND CONTROL
Refer to the timing diagrams and TIMING REQUIREMENTS table for detailed information.
SAMPLING AND CONVERSION
Sampling and conversion is controlled by the CONVST pin. For higher noise performance it is essential to have
low jitter on the falling edge of CONVST. The device uses the internally generated clock for conversion, hence it
has a fixed conversion time.
22
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參數(shù)描述
ADS8413IRGZR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit Uni Diff In Smp rt 4.75-5.25V 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
ADS8413IRGZRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit Uni Diff In Smp rt 4.75-5.25V 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
ADS8413IRGZT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit Uni Diff In Smp rt 4.75-5.25V 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
ADS8413IRGZTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit Uni Diff In Smp rt 4.75-5.25V 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
ADS8422 制造商:BB 制造商全稱:BB 功能描述:16-BIT, 4-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE, REFERENCE
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