参数资料
型号: LTC2440IGN#PBF
厂商: Linear Technology
文件页数: 26/28页
文件大小: 0K
描述: IC ADC DIFFER 24-BIT HS 16-SSOP
标准包装: 100
位数: 24
采样率(每秒): 3.5k
数据接口: MICROWIRE?,串行,SPI?
转换器数目: 2
功率耗散(最大): 40mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-SSOP
包装: 管件
输入数目和类型: 1 个差分,双极
产品目录页面: 1348 (CN2011-ZH PDF)
配用: DC570A-ND - BOARD DELTA SIGMA ADC LTC2440
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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