参数资料
型号: DC742A
厂商: Linear Technology
文件页数: 23/28页
文件大小: 0K
描述: BOARD DELTA SIGMA ADC LTC2449
软件下载: QuikEval System
设计资源: DC742A Design File
DC742A Schematic
标准包装: 1
系列: QuikEval™
ADC 的数量: 1
位数: 24
采样率(每秒): 8k
数据接口: MICROWIRE?,串行,SPI?
已用 IC / 零件: LTC2449
已供物品:
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LTC2444/LTC2445/
LTC2448/LTC2449
4
2444589fb
TI I G CHARACTERISTICS
U
W
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Supply Voltage
4.5
5.5
V
ICC
Supply Current
Conversion Mode
CS = 0V (Note 7)
811
mA
Sleep Mode
CS = VCC (Note 7)
830
A
The
denotes specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. (Note 3)
POWER REQUIRE E TS
W
U
The
denotes specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage
4.5V
≤ VCC ≤ 5.5V
2.5
V
CS, FO
VIL
Low Level Input Voltage
4.5V
≤ VCC ≤ 5.5V
0.8
V
CS, FO
VIH
High Level Input Voltage
4.5V
≤ VCC ≤ 5.5V (Note 8)
2.5
V
SCK
VIL
Low Level Input Voltage
4.5V
≤ VCC ≤ 5.5V (Note 8)
0.8
V
SCK
IIN
Digital Input Current
0V
≤ VIN ≤ VCC
–10
10
A
CS, FO, EXT, SOI
IIN
Digital Input Current
0V
≤ VIN ≤ VCC (Note 8)
–10
10
A
SCK
CIN
Digital Input Capacitance
10
pF
CS, FO
CIN
Digital Input Capacitance
(Note 8)
10
pF
SCK
VOH
High Level Output Voltage
IO = –800A
VCC – 0.5V
V
SDO, BUSY
VOL
Low Level Output Voltage
IO = 1.6mA
0.4V
V
SDO, BUSY
VOH
High Level Output Voltage
IO = –800A (Note 9)
VCC – 0.5V
V
SCK
VOL
Low Level Output Voltage
IO = 1.6mA (Note 9)
0.4V
V
SCK
IOZ
Hi-Z Output Leakage
–10
10
A
SDO
DIGITAL I PUTS A D DIGITAL OUTPUTS
UU
The
denotes specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
fEOSC
External Oscillator Frequency Range
0.1
20
MHz
tHEO
External Oscillator High Period
25
10000
ns
tLEO
External Oscillator Low Period
25
10000
ns
tCONV
Conversion Time
OSR = 256 (SDI = 0)
0.99
1.13
1.33
ms
OSR = 32768 (SDI = 1)
126
145
170
ms
External Oscillator (Notes 10, 13)
40 OSR +170
fEOSC (kHz)
ms
fISCK
Internal SCK Frequency
Internal Oscillator (Note 9)
0.8
0.9
1
MHz
External Oscillator (Notes 9, 10)
fEOSC/10
Hz
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