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| 型号： | ADS1601IPFBR |
| 厂商： | Texas Instruments |
| 文件页数： | 7/29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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AINP+AINN
2
V
=
CM
SD
Modulator
Digital
Filter
Serial
Interface
S
V
IN
VREFN
IOVDD
VREFP
V
REF
S
AINP
AINN
FSO
DOUT
SCLK
CLK
1.06
SBAS322D
– DECEMBER 2004 – REVISED OCTOBER 2011
OVERVIEW
The ADS1601 is a high-performance delta-sigma
The ADS1601 supports a very wide range of input
ADC. The modulator uses an inherently stable 2-1-1
signals. For VREF = 3V, the full-scale input voltage is
multi-stage
architecture
incorporating
proprietary
±2.82V. Having such a wide input range makes
circuitry
that
allows
for
very
linear
high-speed
out-of-range
signals
unlikely.
However,
if
an
operation. The modulator samples the input signal at
out-of-range signal occurs, the digital output OTR
20MSPS (when fCLK = 20MHz). A low-ripple linear
goes high.
phase digital filter decimates the modulator output by
The analog inputs must be driven with a differential
16 to provide high resolution 16-bit output data.
signal to achieve optimum performance. For the input
Conceptually, the modulator and digital filter measure
signal:
the differential input signal, VIN = (AINP – AINN),
against
the
scaled
differential
reference,
The voltage reference can either be generated
the recommended common-mode voltage is 2.7V. In
internally or supplied externally. A three-wire serial
addition to the differential and common-mode input
interface, designed for direct connection to DSPs,
voltages, the absolute input voltage is also important.
outputs the data. A separate power supply for the I/O
This is the voltage on either input (AINP or AINN)
allows flexibility for interfacing to different logic
with respect to AGND. The range for this voltage is:
families. Out-of-range conditions are indicated with a
–0.1V < (AINN or AINP) < 4.6V
dedicated digital output pin. Analog power dissipation
is controlled using an external resistor. This control
If either input is taken below
–0.1V, ESD protection
allows reduced dissipation when operating at slower
diodes on the inputs will turn on. Exceeding 4.6V on
speeds. When not in use, power consumption can be
either input results in degradation in the linearity
dramatically reduced by setting the PD pin low to
performance. ESD protection diodes will also turn on
enter Power-Down mode.
if the inputs are taken above AVDD (+5V).
The recommended absolute input voltage is:
ANALOG INPUTS (AINP, AINN)
–0.1V < (AINN or AINP) < 4.2V
The
ADS1601
measures
the
differential
signal,
VIN = (AINP – AINN), against the differential
Keeping the inputs within this range provides for
reference, VREF = (VREFP – VREFN). The most
optimum performance.
positive measurable differential input is 0.94VREF,
which produces the most positive digital output code
of 7FFFh. Likewise, the most negative measurable
differential input is
–0.94VREF, which produces the
most negative digital output code of 8000h.
Figure 35. Conceptual Block Diagram
Copyright
2004–2011, Texas Instruments Incorporated
15
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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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