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参数资料
| 型号： | ADS1601IPFBR |
| 厂商： | Texas Instruments |
| 文件页数： | 11/29页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT 1.25MSPS 48-TQFP |
| 产品培训模块： | Data Converter Basics |
| 视频文件： | Nuts and Bolts of the Delta-Sigma Converter |
| 标准包装： | 1,000 |
| 位数： | 16 |
| 采样率（每秒）： | 1.25M |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 380mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-TQFP |
| 供应商设备封装： | 48-TQFP（7x7） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个差分，双极 |
| 配用： | 296-17825-ND - EVALUATION MODULE FOR ADS1601 |
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1.2
1.0
0.8
0.6
0.4
0.2
0
-
0.2
0
10
20
30
40
Time(ConversionCycles)
StepResponse
50
20
0
-
20
-
40
-
60
-
80
-
100
-
120
-
140
0
1
2
3
5
4
6
7
8
9
Frequency(MHz)
Magnitude(dB)
10
f
=
CLK
20MHz
SYNC
ADS1601
1
CLK
FSO
DOUT
FSO
1
DOUT
1
SYNC
CLK
SYNC
ADS1601
2
CLK
FSO
DOUT
CLK
SYNC
FSO
1
FSO
2
t
STL
FSO
2
DOUT
2
SBAS322D
– DECEMBER 2004 – REVISED OCTOBER 2011
DATA RETRIEVAL
STEP RESPONSE
Data retrieval is controlled through a simple serial
Figure 44 plots the normalized step response for an
interface. The interface operates in a master fashion
input applied at t = 0. The x-axis units of time are
by outputting both a frame sync indicator (FSO) and a
conversions cycles. It takes 51 cycles to fully settle;
serial clock (SCLK). Complementary outputs are
for fCLK = 20MHz, this corresponds to 40.8μs.
provided for the frame sync output (FSO), serial clock
(SCLK), and data output (DOUT). When not needed,
leave the complementary outputs unconnected.
INITIALIZING THE ADS1601
After the power supplies have stabilized, you must
initialize the ADS1601 by issuing a SYNC pulse as
shown in Figure 1. This operation needs only to be
done once after power-up and does not need to be
performed when exiting the Power-Down mode. Note
that the ADS1601 silicon was revised in June 2006.
The
digital
interface
timing
specifications
were
modified slightly from the previous revision. This data
sheet reflects behavior of the latest revision. Contact
the factory for more information on the previous
revision.
Figure 44. Step Response
SYNCHRONIZING MULTIPLE ADS1601s
The SYNC input can be used to synchronize multiple
FREQUENCY RESPONSE
ADS1601s to provide simultaneous sampling. All
devices to be synchronized must use a common CLK
The linear phase FIR digital filter sets the overall
input. With the CLK inputs running, pulse SYNC on
frequency response. Figure 45 shows the frequency
the falling edge of CLK, as shown in Figure 43.
response from dc to 10MHz for fCLK = 20MHz. The
Afterwards,
the
converters
will
be
converting
frequency response of the ADS1601 filter scales
synchronously
with
the
FSO
outputs
updating
directly with CLK frequency. For example, if the CLK
simultaneously. After synchronization, FSO is held
frequency is decreased by half (to 10MHz), the
low until the digital filter has fully settled.
values on the X-axis in Figure 45 would need to be
scaled by half, with the span becoming dc to 5MHz.
Figure 46 shows the passband ripple from dc to
view of the passband transition by plotting the
response from 400kHz to 650kHz (fCLK = 20MHz).
Figure 45. Frequency Response
Figure 43. Synchronizing Multiple Converters
Copyright
2004–2011, Texas Instruments Incorporated
19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADS1601IPFBRG4 | 功能描述:模数转换器 - ADC 16-Bit 1.25MSPS 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 |
| ADS1601IPFBT | 功能描述:模数转换器 - ADC 16-Bit 1.25MSPS 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 |
| ADS1601IPFBTG4 | 功能描述:模数转换器 - ADC 16-Bit 1.25MSPS 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 |
| ADS1602EVM | 功能描述:数据转换 IC 开发工具 ADS1602EVM Eval Mod 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 |
| ADS1602IPFBR | 功能描述:模数转换器 - ADC 16-Bit 2.5MSPS 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 |
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