參數(shù)資料
型號： ADS1601IPFBT
廠商： Texas Instruments
文件頁數(shù)： 11/29頁
文件大小： 0K
描述： IC ADC 16BIT 1.25MSPS 48-TQFP
產(chǎn)品培訓(xùn)模塊： Data Converter Basics
視頻文件： Nuts and Bolts of the Delta-Sigma Converter
標(biāo)準(zhǔn)包裝： 1
位數(shù)： 16
采樣率（每秒）： 1.25M
數(shù)據(jù)接口： 串行
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 380mW
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 48-TQFP
供應(yīng)商設(shè)備封裝： 48-TQFP（7x7）
包裝： 標(biāo)準(zhǔn)包裝
輸入數(shù)目和類型： 1 個差分，雙極
產(chǎn)品目錄頁面： 890 (CN2011-ZH PDF)
配用： 296-17825-ND - EVALUATION MODULE FOR ADS1601
其它名稱： 296-17631-6
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
600kHz (fCLK = 20MHz). Figure 47 shows a closer
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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參數(shù)描述
ADS1601IPFBTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 1.25MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1602EVM 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 ADS1602EVM Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
ADS1602IPFBR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 2.5MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1602IPFBRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 2.5MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1602IPFBT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 2.5MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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