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参数资料
| 型号： | ADS1259EVM |
| 厂商： | Texas Instruments |
| 文件页数： | 33/48页 |
| 文件大小： | 0K |
| 描述： | EVAL MODULE FOR ADS1259 |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 24 |
| 采样率（每秒）： | 14k |
| 数据接口： | 串行，SPI? |
| 工作温度： | -40°C ~ 125°C |
| 已用 IC / 零件： | ADS1259 |
| 已供物品： | 板 |
| 其它名称： | 296-29312 ADS1259EVM-ND |
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AINP
AINN
RESETPWDN
/
START
SYNCOUT
CS
SCLK
DIN
DOUT
DRDY
AVDD
AVSS
VREFN
VREFP
REFOUT
DVDD
DGND
BYPASS
XTAL2
XTAL1/CLKIN
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
ADS1259
20
to50
W
20W to50W
10nF
(2)
(+)
( )
-
ControllerI/O
ControllerSPIPort
ControllerI/O
+
1 F
m
1 F
m
1 F
m
+3.3V
-2.5V
+2.5V
SignalInput
1 F
m
1 F
m
(1)
1MW
DrivesthePGA280
SYNCINPin
+
1 F
m
+
2.5V
ReferenceOutput
-
+
4.7kW
1MW
SBAS424D
– JUNE 2009 – REVISED AUGUST 2011
BASIC CONNECTION
The ADS1259 basic connections are shown in Figure 64. The diagram shows the ADS1259 operating with an
internal oscillator and with internal reference. Dual
±2.5V analog power supplies are also shown. Pins 6-9 are the
SPI port connection. The remaining digital I/O pins connect to the controller I/O. Note that the minimum
configuration of the digital I/O may include only SCLK, DIN, and DOUT.
(1) It is recommended to buffer the ADS1259 inputs. The output isolation resistors may be incorporated within the amplifier feedback loop.
(2) Low distortion C0G or film capacitor recommended.
Figure 64. ADS1259 Basic Connection Diagram
LAYOUT
Place the input buffer and input decoupling capacitors close to the ADS1259 inputs. The bypass capacitors for
power-supply and reference decoupling should also be placed close to the device. In some cases, it may be
necessary to use a split ground plane in which digital return currents of external components are routed away
from the ADS1259. In this case, connect the grounds at the power supply.
CONFIGURATION GUIDE
Configuration of the ADS1259 involves configuring the device hardware (power supply, I/O pins, etc) and device
register settings. The registers are configured by commands sent via the device SPI port.
Power Supplies
The ADS1259 analog section operates either with a single +5V or dual
±2.5V supplies. The digital section
operates from +2.7V to +5V. The digital and analog power supplies may be tied together (+5V only).
Reference
Select either the internal reference or an external reference for the ADS1259 (see the Reference section). The
default is external reference. Figure 64 depicts the internal reference connection.
Clock
Choose the desired clock source (see the Clock Source section). Figure 64 depicts the internal clock operation.
Copyright
2009–2011, Texas Instruments Incorporated
39
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADS1259EVM | 制造商:Texas Instruments 功能描述:DEVELOPMENT TOOL |
| ADS1259EVM-PDK | 功能描述:数据转换 IC 开发工具 ADS1259 Perf Demo Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| ADS1259EVM-PDK | 制造商:Texas Instruments 功能描述:DEVELOPMENT TOOL |
| ADS1259IPW | 功能描述:模数转换器 - ADC Low-Noise 14kSPS 24B ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ADS1259IPW | 制造商:Texas Instruments 功能描述:A/D CONVERTER (A-D) IC |
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