APPLICATIONS IN
參數(shù)資料
型號(hào)： LTC1594IS#TR
廠商： Linear Technology
文件頁(yè)數(shù)： 6/24頁(yè)
文件大?。?/td> 0K
描述： IC ADC 12BIT 5V 4CH SAMPL 16SOIC
標(biāo)準(zhǔn)包裝： 2,500
位數(shù)： 12
采樣率（每秒）： 16.8k
數(shù)據(jù)接口： MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 1.6mW
電壓電源： 單電源
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 16-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 16-SOIC
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 8 個(gè)單端，單極
14
LTC1594/LTC1598
15948fb
APPLICATIONS INFORMATION
WU
U
CLK
EN
D1
D2
CSMUX
CSADC
B5
B6
B7
B8
B9
B10
B11
DOUT
CH0 TO
CH7
DIN
tCONV
tsuCS
NULL
BIT
D0
B4
B3
B2
B1
B0
EN
D1
tSMPL
tON
B5
B6
B7
B8
B9
B10
B11
tCONV
tsuCS
NULL
BIT
D0
D2
EN
D1
D0
D2
B4
B3
B2
B1
B0
tSMPL
ADCIN =
MUXOUT
COM = GND
1594/98 F05
B4
B3
B2
B1
B0
DON’T CARE
MUXOUT/ADCIN Loop Economizes
Signal Conditioning
The MUXOUT and ADCIN pins of the LTC1594/LTC1598
form a very flexible external loop that allows Program-
mable Gain Amplifier (PGA) and/or processing analog
input signals prior to conversion. This loop is also a cost
effective way to perform the conditioning, because only
one circuit is needed instead of one for each channel.
In the Typical Applications section, there are a few
examples illustrating how to use the MUXOUT/ADCIN loop
to form a PGA and to antialias filter several analog inputs.
ACHIEVING MICROPOWER PERFORMANCE
With typical operating currents of 320
μA and automatic
shutdown between conversions, the LTC1594/LTC1598
achieve extremely low power consumption over a wide
range of sample rates (see Figure 6). The auto shutdown
allows the supply current to drop with reduced sample
rate. Several things must be taken into account to achieve
such a low power consumption.
Shutdown
The LTC1594/LTC1598 are equipped with automatic shut-
down features. They draw power when the CS pin is low.
The bias circuits and comparator of the ADC powers down
and the reference input becomes high impedance at the
end of each conversion leaving the CLK running to clock
out the LSB first data or zeroes (see Figures 1 and 2). When
the CS pin is high, the ADC powers down completely
leaving the CLK running to clock the input data word into
MUX. If the CS, DIN and CLK are not running rail-to-rail, the
input logic buffers will draw currents. These currents may
be large compared to the typical supply current. To obtain
the lowest supply current, run the CS, DIN and CLK pins
rail-to-rail.
DOUT Loading
Capacitive loading on the digital output can increase
power consumption. A 100pF capacitor on the DOUT pin
can add more than 80mA to the supply current at a
320kHz clock frequency. An extra 80mA or so of current
goes into charging and discharging the load capacitor.
The same goes for digital lines driven at a high frequency
by any logic. The (C)(V)(f) currents must be evaluated
and the troublesome ones minimized.
Figure 5. Use Separate Chip Selects to Maximize Sample Rate
SAMPLE FREQUENCY (kHz)
0.1
1
SUPPLY
CURRENT
(
μ
A)
10
100
1000
1
10
100
1594/98 F06
TA = 25°C
VCC = 5V
VREF = 5V
fCLK = 320kHz
Figure 6. Automatic Power Shutdown Between Conversions
Allows Power Consumption to Drop with Sample Rate
相關(guān)PDF資料
PDF描述
VI-26D-CU-S CONVERTER MOD DC/DC 85V 200W
VE-2N3-IU-S CONVERTER MOD DC/DC 24V 200W
VI-260-CU-S CONVERTER MOD DC/DC 5V 200W
VI-BNZ-MY CONVERTER MOD DC/DC 2V 20W
VI-21Z-MV-S CONVERTER MOD DC/DC 2V 60W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1594LCS 功能描述:IC A/D CONV 12BIT SRL 4CH 16SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極
LTC1594LCS#PBF 功能描述:IC A/D CONV 12BIT SRL 4CH 16SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極
LTC1594LCS#TR 功能描述:IC ADC 12BIT 3V 4CH SAMPL 16SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極
LTC1594LCS#TRPBF 功能描述:IC A/D CONV 12BIT SRL 4CH 16SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極
LTC1594LCSPBF 制造商:Linear Technology 功能描述:LTC1594LCSPBF
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*