- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10711 > ADS1259IPW (Texas Instruments)IC ADC 24BIT 14KSPS LN 20TSSOP PDF資料下載
參數(shù)資料
| 型號： | ADS1259IPW |
| 廠商： | Texas Instruments |
| 文件頁數(shù)： | 10/48頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 24BIT 14KSPS LN 20TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Industrial Automation Overview |
| 標(biāo)準(zhǔn)包裝： | 70 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 14k |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 2 個單端，單極；2 個單端，雙極；1 個差分，單極；1 個差分，雙極 |
| 其它名稱： | 296-27184-5 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁
H
=
H
(f)
H
(f)
=
(f)
sinc
5
N
5
sin
512
f
p
f
CLK
64
sin
8
f
p
f
CLK
sin
512
R
f
p
f
CLK
R
sin
512
f
p
f
CLK
N
Analog
Modulator
sinc
5
Filter
(decimateby64)
sinc Filter
1
f
/512
CLK
ModulatorRate=f
/8
CLK
sinc Filter
2
DR[2:0]RegisterBits
(ProgramDecimation)
Output
DataRate=f
/(R
)
CLK
512
SINC2RegisterBit
(0=sinc )
1
SBAS424D
– JUNE 2009 – REVISED AUGUST 2011
DIGITAL FILTER
The SINC2 register bit selects either the sinc1 or sinc2
filter. The sinc1 filter settles in one conversion cycle
The programmable low-pass digital filter receives the
while the sinc2 filter settles in two conversion cycles.
modulator output and produces a high-resolution
However, the sinc2 filter has the benefit of wider
digital output. By adjusting the amount of filtering,
frequency notches which improve line cycle rejection.
tradeoffs can be made between resolution and data
rate: filter more for higher resolution, filter less for
FREQUENCY RESPONSE
higher data rate.
The low-pass digital filter sets the overall frequency
The filter consists of two sections: a fixed decimation
response of the ADS1259. The filter response is the
sinc5 filter followed by a variable decimation filter,
product of the fixed and programmable filter sections,
configurable as sinc1 or sinc2, as illustrated in
and is given by Equation 5:
and reduces the data rate of the modulator from
fCLK/8 to fCLK/512. The second filter stage receives the
data from the sinc5 filter. The second filter stage has
programmable averaging (or decimation) and can be
configured in either sinc1 or sinc2 mode. The
decimation ratio of this stage sets the final output
data rate. As detailed in Table 3, the DR[2:0] register
bits program the decimation ratio and the final output
data rate. The output data rates are identical for both
where:
sinc1 and sinc2 filters.
N = 1 (sinc1)
Table 3. Decimation Ratio of Final Filter Stage
N = 2 (sinc2)
R = Decimation ratio (refer to Table 3)
(5)
DR[2:0] REGISTER
DECIMATION
BITS
RATIO (R)
DATA RATE (SPS)
The digital filter attenuates noise on the modulator
111
1
14400
output, including noise from within the ADS1259 and
110
4
3600
external noise present within the ADS1259 input
101
12
1200
signal.
Adjusting
the
filtering
by
changing
the
decimation ratio used in the programmable filter
100
36
400
changes the filter bandwidth. With a higher number of
011
240
60
decimation, the bandwidth is reduced and more noise
010
288
50
is attenuated.
001
864
16.6
000
1440
10
Figure 39. Block Diagram of Digital Filter
18
Copyright
2009–2011, Texas Instruments Incorporated
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL83483IBZ-T | TXRX RS-485/422 3.3V LP 8-SOIC |
| VE-B0V-MY-B1 | CONVERTER MOD DC/DC 5.8V 50W |
| 85106JC1418PX50 | CONN PLUG STRAIGHT 18POS W/PIN |
| B37981M1103K051 | CAP CER 10000PF 100V 10% RADIAL |
| VI-J1T-MY-F3 | CONVERTER MINIMOD DC/DC 6.5V 50W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS1259IPW | 制造商:Texas Instruments 功能描述:A/D CONVERTER (A-D) IC |
| ADS1259IPWR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Noise 14kSPS 24B ADC 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 |
| ADS1259QPWRQ1 | 功能描述:24 Bit Analog to Digital Converter 1 Input 1 Sigma-Delta 20-TSSOP 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 位數(shù):24 采樣率（每秒）:14k 輸入數(shù):1 輸入類型:差分，單端 數(shù)據(jù)接口:SPI 配置:ADC 無線電 - S/H:ADC:- A/D 轉(zhuǎn)換器數(shù):1 架構(gòu):三角積分 參考類型:外部 電壓 - 電源，模擬:5V 電壓 - 電源，數(shù)字:2.7 V ~ 5.25 V 特性:PGA 工作溫度:-40°C ~ 105°C 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商器件封裝:20-TSSOP 標(biāo)準(zhǔn)包裝:1 |
| ADS-125MC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter， 12-Bit |
| ADS-126 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。