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| 型号： | ADS1601IPFBR |
| 厂商： | Texas Instruments |
| 文件页数： | 13/29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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0.001
0.0008
0.0006
0.0004
0.0002
0
-
0.0002
-
0.0004
-
0.0006
-
0.0008
-
0.001
0
100
200
300
Frequency(kHz)
400
500
Magnitude(dB)
600
f
=20
CLK
MHz
20
0
-
20
-
40
-
60
-
80
-
100
-
120
-
140
0
10
20
30
40
50
Frequency(MHz)
Magnitude(dB)
60
f
=20
CLK
MHz
0.5
0
-
0.5
-
1.0
-
1.5
-
2.0
-
2.5
-
3.0
-
3.5
400
450
500
550
600
Frequency(kHz)
Magnitude(dB)
650
f
=20
CLK
MHz
R
BIAS
RBIAS
AGND
ADS1601
SBAS322D
– DECEMBER 2004 – REVISED OCTOBER 2011
Figure 46. Passband Ripple
Figure 48. Frequency Response Out to 120MHz
ANALOG POWER DISSIPATION
An external resistor connected between the RBIAS
pin and the analog ground sets the analog current
level, as shown in Figure 49. The current is inversely
proportional to the resistor value. Table 3 shows the
recommended values of RBIAS for different CLK
frequencies. Notice that the analog current can be
reduced when using a slower frequency CLK input
because the modulator has more time to settle. Avoid
adding any capacitance in parallel to RBIAS because
this interferes with the internal circuitry used to set
the biasing. Please note that changing RBIAS changes
internally-generated voltages, including the internal
reference; therefore, it should be understood that the
recommendations
of
are
for
external
Figure 47. Passband Transition
reference only.
ANTI-ALIAS REQUIREMENTS
Higher
frequency,
out-of-band
signals
must
be
eliminated to prevent aliasing with ADCs. Fortunately,
the ADS1601 on-chip digital filter greatly simplifies
this filtering requirement. Figure 48 shows the
ADS1601 response out to 60MHz (fCLK = 20MHz).
Since the stop band extends out to 19.3MHz, the
anti-alias filter in front of the ADS1601 only needs to
Figure 49. External Resistor Used to Set Analog
be designed to remove higher frequency signals than
Power Dissipation
this, which can usually be accomplished with a simple
RC circuit on the input driver.
Table 3. Recommended RBIAS Resistor Values for
Different CLK Frequencies
TYPICAL POWER
DATA
DISSIPATION
fCLK
RATE
RBIAS
WITH REFEN HIGH
5MHz
315kSPS
267k
100mW
10MHz
625kSPS
210k
145mW
15MHz
940kSPS
140k
200mW
20MHz
1.25MSPS
60k
325mW
20
Copyright
2004–2011, Texas Instruments Incorporated
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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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