参数资料
型号: DC951A
厂商: Linear Technology
文件页数: 2/40页
文件大小: 0K
描述: BOARD DELTA SIGMA ADC LTC2481
软件下载: QuikEval System
设计资源: DC951A Design File
DC951A Schematic
标准包装: 1
系列: Easy Drive™, QuikEval™
ADC 的数量: 1
位数: 16
采样率(每秒): 7.5
数据接口: I²C,串行,SPI?
工作温度: 0°C ~ 70°C
已用 IC / 零件: LTC2481
已供物品:
相关产品: LTC2481HDD#TRPBF-ND - IC ADC DELTA SIGMA 16BIT 10DFN
LTC2481HDD#PBF-ND - IC ADC 16BIT I2C 7.5SPS 10DFN
LTC2481CDD#TRPBF-ND - IC ADC 16BIT I2C 10-DFN
LTC2481IDD#TRPBF-ND - IC ADC 16BIT I2C 10-DFN
LTC2481IDD#PBF-ND - IC ADC 16BIT I2C 10-DFN
LTC2481CDD#PBF-ND - IC ADC 16BIT I2C 10-DFN
LTC2481
10
2481fc
PIN FUNCTIONS
REF+ (Pin 1), REF(Pin 3): Differential Reference Input.
The voltage on these pins can have any value between
GND and VCC as long as the reference positive input,
REF+, is more positive than the reference negative input,
REF, by at least 0.1V.
VCC (Pin 2): Positive Supply Voltage. Bypass to GND
(Pin 8) with a 1μF tantalum capacitor in parallel with 0.1μF
ceramic capacitor as close to the part as possible.
IN+ (Pin 4), IN(Pin 5):
Differential Analog Input. The
voltage on these pins can have any value between GND
– 0.3V and VCC + 0.3V. Within these limits the converter
bipolar input range (VIN = IN+ – IN) extends from –0.5
VREF /GAIN to 0.5 VREF/GAIN. Outside this input
range the converter produces unique overrange and
underrange output codes.
TYPICAL PERFORMANCE CHARACTERISTICS
PSRR vs Frequency at VCC
(2x Speed Mode)
PSRR vs Frequency at VCC
(2x Speed Mode)
Offset Error vs VCC
(2x Speed Mode)
Offset Error vs VREF
(2x Speed Mode)
PSRR vs Frequency at VCC
(2x Speed Mode)
VCC (V)
2.7
0
OFFSET
ERROR
V)
100
250
3
4
4.5
2481 G36
50
200
150
3.5
5
5.5
VREF = 2.5V
VIN = 0V
VIN(CM) = GND
TA = 25°C
VREF (V)
0
OFFSET
ERROR
V)
190
200
210
3
5
2481 G37
180
170
160
12
4
220
230
240
VCC = 5V
VIN = 0V
VIN(CM) = GND
TA = 25°C
FREQUENCY AT VCC (Hz)
1
0
–20
–40
–60
–80
–100
–120
–140
1k
100k
2481 G38
10
100
10k
1M
REJECTION
(dB)
VCC = 4.1V DC
REF+ = 2.5V
REF= GND
IN+ = GND
IN= GND
TA = 25°C
FREQUENCY AT VCC (Hz)
0
–140
RREJECTION
(dB)
–120
–80
–60
–40
0
20
100
140
2481 G39
–100
–20
80
180
220
200
40 60
120
160
VCC = 4.1V DC ±1.4V
REF+ = 2.5V
REF= GND
IN+ = GND
IN= GND
TA = 25°C
FREQUENCY AT VCC (Hz)
30600
–60
–40
0
30750
2481 G40
–80
–100
30650
30700
30800
–120
–140
–20
REJECTION
(dB)
VCC = 4.1V DC ±0.7V
REF+ = 2.5V
REF= GND
IN+ = GND
IN= GND
TA = 25°C
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