参数资料
型号: DC939A
厂商: Linear Technology
文件页数: 2/42页
文件大小: 0K
描述: BOARD DELTA SIGMA ADC LTC2484
软件下载: QuikEval System
设计资源: DC939A Design File
DC939A Schematic
标准包装: 1
系列: Easy Drive™, QuikEval™
ADC 的数量: 1
位数: 24
采样率(每秒): 6.8
数据接口: MICROWIRE?,串行,SPI?
工作温度: 0°C ~ 70°C
已用 IC / 零件: LTC2484
已供物品:
相关产品: LTC2484CDD#TRPBF-ND - IC ADC 24BIT 10-DFN
LTC2484IDD#TRPBF-ND - IC ADC 24BIT 10-DFN
LTC2484IDD#PBF-ND - IC ADC 24BIT 10-DFN
LTC2484CDD#PBF-ND - IC ADC 24BIT 10-DFN
LTC2484
10
2484fd
TYPICAL PERFORMANCE CHARACTERISTICS
Offset Error vs VCC
(2x Speed Mode)
Offset Error vs VREF
(2x Speed Mode)
PSRR vs Frequency at VCC
(2x Speed Mode)
PSRR vs Frequency at VCC
(2x Speed Mode)
PSRR vs Frequency at VCC
(2x Speed Mode)
VCC (V)
2
2.5
0
OFFSET
ERROR
(μV)
100
250
3
4
4.5
2484 G36
50
200
150
3.5
5
5.5
VREF = 2.5V
VIN = 0V
VIN(CM) = GND
fO = GND
TA = 25°C
VREF (V)
0
OFFSET
ERROR
(μV)
190
200
210
3
5
2484 G37
180
170
160
12
4
220
230
240
VCC = 5V
VIN = 0V
VIN(CM) = GND
fO = GND
TA = 25°C
FREQUENCY AT VCC (Hz)
1
0
–20
–40
–60
–80
–100
–120
–140
1k
100k
2484 G38
10
100
10k
1M
REJECTION
(dB)
VCC = 4.1V DC
REF+ = 2.5V
REF= GND
IN+ = GND
IN= GND
fO = GND
TA = 25°C
FREQUENCY AT VCC (Hz)
0
–140
REJECTION
(dB)
–120
–80
–60
–40
0
20
100
140
2484 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
fO = GND
TA = 25°C
FREQUENCY AT VCC (Hz)
30600
–60
–40
0
30750
2484 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
fO = GND
TA = 25°C
PIN FUNCTIONS
SDI (Pin 1): Serial Data Input. This pin is used to select
the line frequency rejection, input, temperature sensor
and 2x speed mode. Data is shifted into the SDI pin on
the rising edge of serial clock (SCK).
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.
VREF (Pin 3): Positive Reference Input. The voltage on
this pin can have any value between 0.1V and VCC. The
negative reference input is GND (Pin 8).
IN+ (Pin 4), IN(Pin 5):
Differential Analog Inputs. The volt-
age 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 to
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