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LTC2408I 데이터시트 PDF




Linear Technology에서 제조한 전자 부품 LTC2408I은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 LTC2408I 자료 제공

부품번호 LTC2408I 기능
기능 4-/8-Channel 24-Bit uPower No Latency ADCs
제조업체 Linear Technology
로고 Linear Technology 로고


LTC2408I 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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LTC2408I 데이터시트, 핀배열, 회로
FEATURES
s Pin Compatible 4-/8-Channel 24-Bit ADCs
s Single Conversion Digital Filter Settling Time
Simplifies Multiplexing
s 4ppm INL, No Missing Codes
s 4ppm Full-Scale Error
s 0.5ppm Offset
s 0.3ppm Noise
s Internal Oscillator—No External Components
Required
s 110dB Min, 50Hz/60Hz Notch Filter
s Reference Input Voltage: 0.1V to VCC
s Live Zero—Extended Input Range Accommodates
12.5% Overrange and Underrange
s Single Supply 2.7V to 5.5V Operation
s Low Supply Current (200µA) and Auto Shutdown
U
APPLICATIO S
s Weight Scales
s Direct Temperature Measurement
s Gas Analyzers
s Strain-Gage Transducers
s Instrumentation
s Data Acquisition
s Industrial Process Control
s 6-Digit DVMs
LTC2404/LTC2408
4-/8-Channel 24-Bit µPower
No Latency ∆ΣTM ADCs
DESCRIPTIO
The LTC®2404/LTC2408 are 4-/8-channel 2.7V to 5.5V
micropower 24-bit A/D converters with an integrated
oscillator, 4ppm INL and 0.3ppm RMS noise. They use
delta-sigma technology and provide single cycle digital
filter settling time (no latency delay) for multiplexed
applications. The first conversion after the channel is
changed is always valid. Through a single pin the LTC2404/
LTC2408 can be configured for better than 110dB rejec-
tion at 50Hz or 60Hz ±2%, or can be driven by an external
oscillator for a user defined rejection frequency in the
range 1Hz to 120Hz. The internal oscillator requires no
external frequency setting components.
The converters accept any external reference voltage from
0.1V to VCC. With their extended input conversion range of
–12.5% VREF to 112.5% VREF the LTC2404/LTC2408
smoothly resolve the offset and overrange problems of
preceding sensors or signal conditioning circuits.
The LTC2404/LTC2408 communicate through a flexible
4-wire digital interface which is compatible with SPI and
MICROWIRETM protocols.
, LTC and LT are registered trademarks of Linear Technology Corporation.
No Latency ∆Σ is a trademark of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
TYPICAL APPLICATIO
0.1V TO VCC
2.7V TO 5.5V
ANALOG
INPUTS
–0.12VREF TO
1.12VREF
74
3 2, 8
MUXOUT
9 CH0
10 CH1
11 CH2
12 CH3
4-/8-CHANNEL
13 CH4*
MUX
14 CH5*
15 CH6*
17 CH7*
6 COM
ADCIN VREF VCC
24-BIT
+ ∆∑ ADC
CSADC
CSMUX
SCK
CLK
DIN
SDO
23
20
19
25
21
24
LTC2404/LTC2408
GND
26
FO
1, 5, 16, 18, 22, 27, 28
2404/08 TA01
*THESE PINS ARE NO CONNECTS ON THE LTC2404
1µF
SERIAL DATA LINK
MICROWIRE AND
SPI COMPATABLE
MPU
VCC
= INTERNAL OSC/50Hz REJECTION
= EXTERNAL CLOCK SOURCE
= INTERNAL OSC/60Hz REJECTION
Total Unadjusted Error vs Output Code
10
8
VDD = 5V
VREF = 5V
6 TA = 25°C
FO = LOW
4
2
0
–2
–4
–6
–8
–10
0
8,338,608
OUTPUT CODE (DECIMAL)
16,777,215
2404/08 TA02
1




LTC2408I pdf, 반도체, 판매, 대치품
LTC2404/LTC2408
DIGITAL I PUTS A D DIGITAL OUTPUTS The q denotes specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIH High Level Input Voltage
CS, FO
VIL Low Level Input Voltage
CS, FO
VIH High Level Input Voltage
SCK
VIL Low Level Input Voltage
SCK
IIN Digital Input Current
CS, FO
IIN Digital Input Current
SCK
2.7V VCC 5.5V
2.7V VCC 3.3V
4.5V VCC 5.5V
2.7V VCC 5.5V
2.7V VCC 5.5V (Note 9)
2.7V VCC 3.3V (Note 9)
4.5V VCC 5.5V (Note 9)
2.7V VCC 5.5V (Note 9)
0V VIN VCC
0V VIN VCC (Note 9)
q 2.5
2.0
q
q 2.5
2.0
q
q –10
q –10
V
V
0.8 V
0.6 V
V
V
0.8 V
0.6 V
10 µA
10 µA
CIN Digital Input Capacitance
CS, FO
CIN Digital Input Capacitance
SCK
(Note 9)
10 pF
10 pF
VOH High Level Output Voltage
SDO
IO = – 800µA
q VCC – 0.5V
V
VOL Low Level Output Voltage
SDO
IO = 1.6mA
q
0.4V V
VOH High Level Output Voltage
SCK
IO = – 800µA (Note 10)
q VCC – 0.5V
V
VOL Low Level Output Voltage
SCK
IO = 1.6mA (Note 10)
q
0.4V V
IOZ
VIN HMUX
VIN LMUX
High-Z Output Leakage
SDO
MUX High Level Input Voltage
MUX Low Level Input Voltage
V+ = 3V
V+ = 2.4V
q –10
q2
q
10 µA
V
0.8 V
POWER REQUIRE E TS The q denotes specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. (Note 3)
SYMBOL
VCC
ICC
ICC(MUX)
PARAMETER
Supply Voltage
Supply Current
Conversion Mode
Sleep Mode
Multiplexer Supply Current
CONDITIONS
CS = 0V (Note 12)
CS = VCC (Note 12)
All Logic Inputs Tied Together
VIN = 0V or 5V
MIN
q 2.7
q
q
q
TYP MAX UNITS
5.5 V
200 300
20 30
15 40
µA
µA
µA
4

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LTC2408I 전자부품, 판매, 대치품
TYPICAL PERFOR A CE CHARACTERISTICS
RMS Noise vs Reference Voltage
20
VCC = 5V
TA = 25°C
15
Offset Error vs VCC
5.0
VREF = 2.5V
TA = 25°C
2.5
10 0
5 – 2.5
0
01 2 345
REFERENCE VOLTAGE (V)
24048 G10
Noise Histogram
1500
VCC = 5V
VREF = 5V
VIN = 0V
1000
500
– 5.0
2.7 3.2 3.7 4.2 4.7
VCC
RMS Noise vs CODE OUT
1.00
VCC = 5V
VREF = 5V
VIN = – 0.3V TO 5.3V
0.75 TA = 25°C
5.2
24048 G11
0.50
0.25
0
–1.0
– 0.5 0
0.5 1.0
OUTPUT CODE (ppm)
1.5
24048 G13
Full-Scale Error vs Temperature
5.0
VCC = 5V
VREF = 5V
VIN = 5V
2.5
0
0
7FFFFF
CODE OUT (HEX)
FFFFFF
24048 G14
Full-Scale Error
vs Reference Voltage
10.0
VCC = 5V
VIN = VREF
7.5
0 5.0
– 2.5 2.5
– 5.0
– 50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
24048 G16
0
01 2 345
REFERENCE VOLTAGE (V)
24048 G17
LTC2404/LTC2408
RMS Noise vs VCC
5.0
VREF = 2.5V
TA = 25°C
2.5
0
2.7 3.2 3.7 4.2 4.7 5.2
VCC
24048 G12
Offset Error vs Temperature
5.0
VCC = 5V
VREF = 5V
VIN = 0V
2.5
0
– 2.5
– 5.0
– 50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
24048 G15
Full-Scale Error vs VCC
6
5
4
3
2
1 VREF = 2.5V
VIN = 2.5V
TA = 25°C
0
2.7 3.2 3.7 4.2 4.7 5.2
VCC
24048 G18
7

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