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LTC1598 数据表(PDF) 3 Page - Linear Technology

部件名 LTC1598
功能描述  8-Channel, Micropower Sampling 12-Bit Serial I/O A/D Converter
PDF  12 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1598 数据表(HTML) 3 Page - Linear Technology

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3
LTC1598
(Note 5) fSMPL = 16.8kHz
DYNAMIC ACCURACY
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
S/(N + D)
Signal-to-Noise Plus Distortion Ratio
1kHz Input Signal
71
dB
THD
Total Harmonic Distortion (Up to 5th Harmonic)
1kHz Input Signal
– 78
dB
SFDR
Spurious-Free Dynamic Range
1kHz Input Signal
80
dB
Peak Harmonic or Spurious Noise
1kHz Input Signal
– 80
dB
(Note 5)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tSMPL
Analog Input Sample Time
See Operating Sequence 1
1.5
CLK Cycles
fSMPL(MAX)
Maximum Sampling Frequency
See Operating Sequence 1
q
16.8
kHz
tCONV
Conversion Time
See Operating Sequence 1
12
CLK Cycles
tdDO
Delay Time, CLK
↓ to DOUT Data Valid
See Test Circuits
q
250
600
ns
tdis
Delay Time, CS
↑ to DOUT Hi-Z
See Test Circuits
q
135
300
ns
ten
Delay Time, CLK
↓ to DOUT Enabled
See Test Circuits
q
75
200
ns
thDO
Time Output Data Remains Valid After CLK
↓
CLOAD = 100pF
230
ns
tf
DOUT Fall Time
See Test Circuits
q
50
150
ns
tr
DOUT Rise Time
See Test Circuits
q
50
150
ns
tON
Enable Turn-On Time
See Operating Sequence 1
q
260
700
ns
tOFF
Enable Turn-Off Time
See Operating Sequence 2
q
100
300
ns
tOPEN
Break-Before-Make Interval
q
35
160
ns
CIN
Input Capacitance
Analog Inputs On-Channel
20
pF
Off-Channel
5
pF
Digital Input
5
pF
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
AC CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage
VCC = 5.25V
q
2.6
V
VIL
Low Level Input Voltage
VCC = 4.75V
q
0.8
V
IIH
High Level Input Current
VIN = VCC
q
2.5
µA
IIL
Low Level Input Current
VIN = 0V
q
– 2.5
µA
VOH
High Level Output Voltage
VCC = 4.75V, IO = 10µA
q
4.0
4.64
V
VCC = 4.75V, IO = 360µA
q
2.4
4.62
V
VOL
Low Level Output Voltage
VCC = 4.75V, IO = 1.6mA
q
0.4
V
IOZ
Hi-Z Output Leakage
CS = High
q
±3
µA
ISOURCE
Output Source Current
VOUT = 0V
– 25
mA
ISINK
Output Sink Current
VOUT = VCC
45
mA
RREF
Reference Input Resistance
CS = VIH
5000
M
Ω
CS = VIL
55
k
Ω
IREF
Reference Current
CS = VCC
q
0.001
2.5
µA
tCYC ≥ 760µs, fCLK ≤ 25kHz
90
µA
tCYC ≥ 60µs, fCLK ≤ 320kHz
q
90
140
µA
ICC
Supply Current
CS = VCC, CLK = VCC, DIN = VCC
q
0.001
±5
µA
tCYC ≥ 760µs, fCLK ≤ 25kHz
320
µA
tCYC ≥ 60µs, fCLK ≤ 320kHz
q
320
640
µA
(Note 5)



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