收藏本站
参数资料
型号： ADS1601EVM
厂商： Texas Instruments
文件页数： 8/29页
文件大小： 0K
描述： EVALUATION MODULE FOR ADS1601
标准包装： 1
ADC 的数量： 1
位数： 16
采样率（每秒）： 1.25M
数据接口： 串行
输入范围： ±3 V
在以下条件下的电源（标准）： 145mW @ 625kSPS，330mW @ 1.25MSPS
工作温度： -40°C ~ 85°C
已用 IC / 零件： ADS1601
已供物品： 板
相关产品： 296-17631-6-ND - IC ADC 16BIT 1.25MSPS 48-TQFP
ADS1601IPFBTG4-ND - IC ADC 16BIT 1.25MSPS 48-TQFP
ADS1601IPFBRG4-ND - IC ADC 16BIT 1.25MSPS 48-TQFP
ADS1601IPFBR-ND - IC ADC 16BIT 1.25MSPS 48-TQFP
296-17631-1-ND - IC ADC 16BIT 1.25MSPS 48-TQFP
296-17631-2-ND - IC ADC 16BIT 1.25MSPS 48-TQFP
其它名称： 296-17825
S
1
S
2
10pF
AINP
ADS1601
8pF
VMID
S
1
S
2
10pF
AINN
8pF
VMID
AGND
392W
OPA2822
ADS1601
AGND
OPA2822
40pF
V
CM
(1)
V
CM
(1)
V
CM
(1)
100pF
AINP
AINN
100pF
(3)
392W
40pF
100pF
(2)
392W
0.01 F
m
0.01 F
m
392W
1 F
m
392W
1kW
1 F
m
392W
49.9W
-
V
IN
2
+V
CM
V
IN
2
+V
CM
On
S
1
S
2
Off
On
Off
t
=
f
SAMPLE
CLK
1/
ADS1601
THS4503
22pF
-VIN
+V
IN
100pF
AINP
AINN
100pF
24.9W
392W
24.9W
392W
22pF
V
CM
ADS1601
SBAS322D
– DECEMBER 2004 – REVISED OCTOBER 2011
www.ti.com
INPUT CIRCUITRY
drivers close to the inputs and use good capacitor
bypass techniques on their supplies, such as a
The ADS1601 uses switched-capacitor circuitry to
smaller high-quality ceramic capacitor in parallel with
measure the input voltage. Internal capacitors are
a larger capacitor. Keep the resistances used in the
charged by the inputs and then discharged internally
driver circuits low
—thermal noise in the driver circuits
with this cycle repeating at the frequency of CLK.
degrades the overall noise performance. When the
Figure 36 shows a conceptual diagram of these
signal can be ac-coupled to the ADS1601 inputs, a
circuits. Switches S2 represent the net effect of the
simple RC filter can set the input common-mode
modulator
circuitry
in
discharging
the
sampling
voltage.
The
ADS1601
is
a
high-speed,
capacitors; the actual implementation is different. The
high-performance ADC. Special care must be taken
timing for switches S1 and S2 is shown in Figure 37.
when selecting the test equipment and setup used
with this device. Pay particular attention to the signal
sources to ensure they do not limit performance when
measuring the ADS1601.
Figure 36. Conceptual Diagram of Internal
Circuitry Connected to the Analog Inputs
(1) Recommended VCM = 2.7V.
(2) Optional ac-coupling circuit provides common-mode input
voltage.
(3) Increase to 390pF when fIN ≤ 100kHz for improved SNR and
THD.
Figure 38. Recommended Driver Circuit Using
the OPA2822
Figure 37. Timing for the Switches in Figure 36
DRIVING THE INPUTS
The external circuits driving the ADS1601 inputs must
be able to handle the load presented by the switching
capacitors within the ADS1601. The input switches S1
in Figure 36 are closed for approximately one-half of
the sampling period, tSAMPLE, allowing only 24ns for
the internal capacitors to be charged by the inputs
when fCLK = 20MHz.
Figure 38 and Figure 39 show the recommended
circuits when using single-ended or differential op
amps, respectively. The analog inputs must be driven
Figure 39. Recommended Driver Circuit Using
differentially to achieve optimum performance. The
the THS4503 Differential Amplifier
external capacitors, between the inputs and from
each input to AGND, improve linearity and should be
placed as close to the pins as possible. Place the
16
Copyright
2004–2011, Texas Instruments Incorporated
相关PDF资料
PDF描述
0210490290 CABLE JUMPER 1.25MM .178M 22POS
EEC26DRXS-S734 CONN EDGECARD 52POS DIP .100 SLD
0982660843 CBL 15POS 0.5MM JMPR TYPE A 6"
FI-RE41HL-KITASSY-300M CABLE ASSY FI-RE 41POS 300MM
101A073-3/86-0 BOOT MOLDED
相关代理商/技术参数
参数描述
ADS1601IPFBR 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
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
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*