参数资料
型号: DC1783A-G
厂商: Linear Technology
文件页数: 19/24页
文件大小: 0K
描述: BOARD SAR ADC LTC2377-18
软件下载: QuikEval II System
设计资源: DC1783A Design Files
DC1783A Schematic
标准包装: 1
系列: QuikEval™
ADC 的数量: 1
位数: 18
采样率(每秒): 500k
数据接口: 串行,SPI?
输入范围: ±VREF
在以下条件下的电源(标准): 6.8mW @ 500kSPS
工作温度: 0°C ~ 70°C
已用 IC / 零件: LTC2377-18
已供物品:
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LTC2377-18
4
237718f
ADC TIMING CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
fSMPL
Maximum Sampling Frequency
l
500
ksps
tCONV
Conversion Time
l
1
1.5
μs
tACQ
Acquisition Time
tACQ = tCYC – tHOLD (Note 10)
l
1.460
μs
tHOLD
Maximum Time Between Acquisitions
l
540
ns
tCYC
Time Between Conversions
l
2μs
tCNVH
CNV High Time
l
20
ns
tBUSYLH
CNV
↑ to BUSY Delay
CL = 20pF
l
13
ns
tCNVL
Minimum Low Time for CNV
(Note 11)
l
20
ns
tQUIET
SCK Quiet Time from CNV
(Note 10)
l
20
ns
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 4)
POWER REQUIREMENTS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VDD
Supply Voltage
l
2.375
2.5
2.625
V
OVDD
Supply Voltage
l
1.71
5.25
V
IVDD
IOVDD
IPD
Supply Current
Power Down Mode
500ksps Sample Rate
500ksps Sample Rate (CL = 20pF)
Conversion Done (IVDD + IOVDD + IREF)
Conversion Done (IVDD + IOVDD + IREF, H-Grade)
l
2.7
0.1
0.9
3.2
90
140
mA
μA
PD
Power Dissipation
Power Down Mode
500ksps Sample Rate
Conversion Done (IVDD + IOVDD + IREF)
Conversion Done (IVDD + IOVDD + IREF, H-Grade)
6.75
2.25
8
225
315
mW
μW
The
l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 4)
REFERENCE INPUT
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VREF
Reference Voltage
(Note 5)
l
2.5
5.1
V
IREF
Reference Input Current
(Note 9)
l
0.32
0.4
mA
VIHDGC
High Level Input Voltage REF/DGC Pin
l
0.8VREF
V
VILDGC
Low Level Input Voltage REF/DGC Pin
l
0.2VREF
V
The
l denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at TA = 25°C. (Note 4)
DIGITAL INPUTS AND DIGITAL OUTPUTS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage
l 0.8 OVDD
V
VIL
Low Level Input Voltage
l
0.2 OVDD
V
IIN
Digital Input Current
VIN = 0V to OVDD
l
–10
10
μA
CIN
Digital Input Capacitance
5pF
VOH
High Level Output Voltage
IO = –500μA
l OVDD – 0.2
V
VOL
Low Level Output Voltage
IO = 500μA
l
0.2
V
IOZ
Hi-Z Output Leakage Current
VOUT = 0V to OVDD
l
–10
10
μA
ISOURCE
Output Source Current
VOUT = 0V
–10
mA
ISINK
Output Sink Current
VOUT = OVDD
10
mA
The
l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)
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