參數(shù)資料
型號： LTC2440IGN
廠商： Linear Technology
文件頁數(shù)： 1/28頁
文件大小： 0K
描述： IC ADC DIFFER 24-BIT HS 16-SSOP
標(biāo)準(zhǔn)包裝： 100
位數(shù)： 24
采樣率（每秒）： 3.5k
數(shù)據(jù)接口： MICROWIRE?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 2
功率耗散（最大）： 40mW
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-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 16-SSOP
包裝： 管件
輸入數(shù)目和類型： 1 個差分，雙極
配用： DC570A-ND - BOARD DELTA SIGMA ADC LTC2440
LTC2440
1
2440fd
2440 TA01
REFERENCE VOLTAGE
0.1V TO VCC
ANALOG INPUT
–0.5VREF TO 0.5VREF
3-WIRE
SPI INTERFACE
6.9Hz, 200nV NOISE,
50/60Hz REJECTION
880Hz OUTPUT RATE,
2μV NOISE
10-SPEED SERIAL
PROGRAMMABLE
VCC
4.5V TO 5.5V
4
VCC
BUSY
fO
REF+
SCK
IN+
IN–
SDO
GND
CS
EXT
SDI
LTC2440
REF–
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
24-Bit High Speed
Differential Δ∑ ADC with
Selectable Speed/Resolution
The LTC2440 is a high speed 24-bit No Latency Δ∑TM
ADC with 5ppm INL and 5μV offset. It uses proprietary
delta-sigma architecture enabling variable speed and reso-
lution with no latency. Ten speed/resolution combinations
(6.9Hz/200nVRMS to 3.5kHz/25μVRMS) are programmed
through a simple serial interface. Alternatively, by tying a
single pin HIGH or LOW, a fast (880Hz/2μVRMS) or ultralow
noise (6.9Hz, 200nVRMS, 50/60Hz rejection) speed/reso-
lution combination can be easily selected. The accuracy
(offset, full-scale, linearity, drift) and power dissipation
are independent of the speed selected. Since there is no
latency, a speed/resolution change may be made between
conversions with no degradation in performance.
Following each conversion cycle, the LTC2440 automati-
cally enters a low power sleep state. Power dissipation
may be reduced by increasing the duration of this sleep
state. For example, running at the 3.5kHz conversion speed
but reading data at a 100Hz rate draws 240μA average
current (1.1mW) while reading data at a 7Hz output rate
draws only 25μA (125μW).The LTC2440 communicates
through a exible 3-wire or 4-wire digital interface that is
compatible with the LTC2410 and is available in a narrow
16-lead SSOP package.
Simple 24-Bit 2-Speed Acquisition System
n Up to 3.5kHz Output Rate
n Selectable Speed/Resolution
n 2μVRMS Noise at 880Hz Output Rate
n 200nVRMS Noise at 6.9Hz Output Rate with
Simultaneous 50/60Hz Rejection
n 0.0005% INL, No Missing Codes
n Autosleep Enables 20μA Operation at 6.9Hz
n <5μV Offset (4.5V < VCC < 5.5V, –40°C to 85°C)
n Differential Input and Differential Reference with
GND to VCC Common Mode Range
n No Latency, Each Conversion is Accurate Even After
an Input Step
n Internal Oscillator—No External Components
n Pin Compatible with the LTC2410
n 24-Bit ADC in Narrow 16-Lead SSOP Package
n High Speed Multiplexing
n Weight Scales
n Auto Ranging 6-Digit DVMs
n Direct Temperature Measurement
n High Speed Data Acquisition
Speed vs RMS Noise
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
No Latency Δ∑ is a trademark of Linear Technology Corporation. All other trademarks are
the property of their respective owners.
CONVERSION RATE (Hz)
1
0.1
RMS
NOISE
(μV)
1
10
100
10
100
2440 TA02
1000
10000
VCC = 5V
VREF = 5V
VIN
+ = VIN– = 0V
2μV AT 880Hz
200nV AT 6.9Hz
(50/60Hz REJECTION)
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參數(shù)描述
LTC2440IGN#PBF 功能描述:IC ADC DIFFER 24-BIT HS 16-SSOP 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 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
LTC2440IGN#PBF 制造商:Linear Technology 功能描述:A/D Converter (A-D) IC 制造商:Linear Technology 功能描述:IC, ADC, 24BIT, 3.5KHZ, SSOP-16
LTC2440IGN#TR 功能描述:IC CONV A/D 24-BIT DIFF 16-SSOP 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 個單端，單極
LTC2440IGN#TRPBF 功能描述:IC ADC DIFFER 24-BIT HS 16-SSOP 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 個單端，單極
LTC2440IGNPBF 制造商:Linear Technology 功能描述:24-Bit Diff. ADC Speed/Resolution SSOP16
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