參數(shù)資料
型號： DC570A
廠商： Linear Technology
文件頁數(shù)： 26/28頁
文件大小： 0K
描述： BOARD DELTA SIGMA ADC LTC2440
軟件下載： QuikEval System
設(shè)計資源： DC570A Design File
DC570A Schematic
標(biāo)準(zhǔn)包裝： 1
系列： QuikEval™
ADC 的數(shù)量： 2
位數(shù)： 24
采樣率（每秒）： 3.5k
數(shù)據(jù)接口： MICROWIRE?，串行，SPI?
工作溫度： 0°C ~ 70°C
已用 IC / 零件： LTC2440
已供物品： 板
相關(guān)產(chǎn)品： LTC2440CGN#TRPBF-ND - IC ADC DIFFER 24-BIT HS 16-SSOP
LTC2440IGN#TRPBF-ND - IC ADC DIFFER 24-BIT HS 16-SSOP
LTC2440IGN#PBF-ND - IC ADC DIFFER 24-BIT HS 16-SSOP
LTC2440CGN#PBF-ND - IC ADC DIFFER 24-BIT HS 16-SSOP
LTC2440IGN#TR-ND - IC CONV A/D 24-BIT DIFF 16-SSOP
LTC2440CGN#TR-ND - IC CONV A/D 24-BIT DIFF 16-SSOP
LTC2440IGN-ND - IC ADC DIFFER 24-BIT HS 16-SSOP
LTC2440CGN-ND - IC ADC DIFFER 24-BIT HS 16-SSOP
LTC2440
7
2440fd
TYPICAL PERFORMANCE CHARACTERISTICS
Negative Full-Scale Error
vs Temperature
Positive Full-Scale Error
vs Temperature
Offset Error vs VCC
Offset Error vs Conversion Rate
Offset Error vs VINCM
RMS Noise vs Temperature
Offset Error vs Temperature
INL vs Output Rate
(OSR = 128) External Clock Sweep
10MHz to 20MHz
RMS Noise vs Output Rate
(OSR = 128) External Clock
Sweep 10MHz to 20MHz
TEMPERATURE (°C)
–55
FULL-SCALE
ERROR
(ppm
OF
V
REF
)
5
10
15
125
2440 G19
–5
–20
–25
5
35
65
95
20
0
–10
–15
4.5V
5V
5.5V
VCC = 4.5V
VREF = 4.5V
VREF
+ = 4.5V
VREF
– = GND
VINCM = 2.25V
OSR = 32768
fO = GND
VCC = 5.5V, 5V
VREF = 5V
VREF
+ = 5V
VREF
– = GND
VINCM = 2.5V
OSR = 32768
fO = GND
TEMPERATURE (°C)
–55
FULL-SCALE
ERROR
(ppm
OF
V
REF
)
5
10
15
125
2440 G20
–5
–20
–25
5
35
65
95
20
0
–10
–15
4.5V
5V
5.5V
VCC = 4.5V
VREF = 4.5V
VREF
+ = 4.5V
VREF
– = GND
VINCM = 2.25V
OSR = 32768
fO = GND
VCC = 5.5V, 5V
VREF = 5V
VREF
+ = 5V
VREF
– = GND
VINCM = 2.5V
OSR = 32768
fO = GND
VCC (V)
4.5
OFFSET
ERROR
(ppm
OF
V
REF
)
0
2.5
5.3
2440 G21
–2.5
–5.0
4.7
4.9
5.1
5.5
5.0
VREF = 2.5V
VREF
+ = 2.5V
VREF
– = GND
VIN
+ = VIN– = GND
OSR = 32768
fO = GND
TA = 25°C
CONVERSION RATE (Hz)
0
–5.0
OFFSET
ERROR
(ppm
OF
V
REF
)
–2.5
0
2.5
5.0
500
1000 1500 2000
2440 G22
2500 3000 3500
VCC = 5V
VREF = 5V
VREF
+ = 5V
VREF
– = GND
VIN
+ = VIN– = GND
fO = GND
TA = 25°C
VINCM (V)
0
OFFSET
ERROR
(ppm
OF
V
REF
)
0
2.5
4
2440 G23
–2.5
–5.0
1
2
3
5
5.0
VCC = 5V
VREF = 5V
VREF
+ = 5V
VREF
– = GND
VIN
+ = VIN– = VINCM
OSR = 32768
fO = GND
TA = 25°C
TEMPERATURE (°C)
–55
0.5
RMS
NOISE
(μV)
1.0
1.5
2.0
2.5
3.5
–25
535
65
2440 G24
95
125
3.0
VCC = 4.5V
VREF = 2.5V
VREF
+ = 2.5V
VREF
– = GND
VIN
+ = VIN– = GND
OSR = 256
fO = GND
VCC = 5.5V, 5V
VREF = 5V
VREF
+ = 5V
VREF
– = GND
VIN
+ = VIN– = GND
OSR = 256
fO = GND
VCC = 5V
VCC = 5.5V
VCC = 4.5V
TEMPERATURE (°C)
–55
–5.0
OFFSET
ERROR
(μV)
–2.5
0
2.5
5.0
–25
535
65
2440 G25
95
125
VCC = 4.5V
VREF = 2.5V
VREF
+ = 2.5V
VREF
– = GND
VIN
+ = VIN– = GND
OSR = 256
fO = GND
VCC = 5.5V, 5V
VREF = 5V
VREF
+ = 5V
VREF
– = GND
VIN
+ = VIN– = GND
OSR = 256
fO = GND
VCC = 5V
VCC = 5.5V
VCC = 4.5V
OUTPUT RATE (Hz)
2000
2500
3000
3500
4000
LINEARITY
(BITS)
2440 G26
20
18
16
14
12
10
8
6
4
2
0
EXTERNAL CLOCK 10MHz
(OR INTERNAL OSCILLATOR)
VREF = VCC = 5V
TEMP = 25°C
SWEEP (VIN – VREF/2) TO VREF/2
EXTERNAL
CLOCK 20MHz
OUTPUT RATE (Hz)
2000
2500
3000
3500
4000
RMS
NOISE
(μV)
2440 G27
5
4
3
2
1
0
VREF = VCC = 5V
TEMP = 25°C
VIN ±VREF/2
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