參數(shù)資料
型號(hào)： LTC1594LIS
廠商： LINEAR TECHNOLOGY CORP
元件分類： ADC
英文描述： 4- and 8-Channel, 3V Micropower Sampling 12-Bit Serial I/O A/D Converters
中文描述： 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16
封裝： 0.150 INCH, PLASTIC, SO-16
文件頁(yè)數(shù)： 4/24頁(yè)
文件大?。?/td> 278K
代理商： LTC1594LIS
4
LTC1594L/LTC1598L
SYMBOL
t
SMPL
f
SMPL(MAX)
t
CONV
t
dDO
t
dis
t
en
t
hDO
t
f
t
r
t
ON
t
OFF
t
OPEN
C
IN
PARAMETER
Analog Input Sample Time
Maximum Sampling Frequency
Conversion Time
Delay Time, CLK
↓
to D
OUT
Data Valid
Delay Time, CS
↑
to D
OUT
Hi-Z
Delay Time, CLK
↓
to D
OUT
Enabled
Time Output Data Remains Valid After CLK
↓
D
OUT
Fall Time
D
OUT
Rise Time
Enable Turn-On Time
Enable Turn-Off Time
Break-Before-Make Interval
Input Capacitance
CONDITIONS
See Figure 1 in Applications Information
See Figure 1 in Applications Information
See Figure 1 in Applications Information
See Test Circuits
See Test Circuits
See Test Circuits
C
LOAD
= 100pF
See Test Circuits
See Test Circuits
See Figure 1 in Applications Information
See Figure 2 in Applications Information
MIN
1.5
10.5
TYP
MAX
UNITS
CLK Cycles
G
kHz
12
600
220
180
520
60
80
540
190
350
20
5
5
CLK Cycles
G
1500
600
500
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
pF
pF
G
G
G
180
180
1200
500
G
G
G
G
125
Analog Inputs On-Channel
Off-Channel
Digital Input
AC CHARACTERISTICS
otherwise specifications are at T
A
= 25
°
C.(Note 5)
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
All voltage values are with respect to GND.
Note 3:
These devices are specified at 3V. Consult factory for 5V
specified devices (LTC1594/LTC1598).
Note 4:
Increased leakage currents at elevated temperatures cause the S/H
to droop, therefore it is recommended that f
CLK
≥
200kHz at 85
°
C,
f
CLK
≥
75kHz at 70
°
C and f
CLK
≥
1kHz at 25
°
C.
Note 5:
V
CC
= 2.7V, V
REF
= 2.5V and CLK = 200kHz unless otherwise
specified. CSADC and CSMUX pins are tied together during the test.
Note 6:
Linearity error is specified between the actual end points of the
A/D transfer curve.
Note 7:
Two on-chip diodes are tied to each reference and analog input
which will conduct for reference or analog input voltages one diode drop
below GND or one diode drop above V
CC
. This spec allows 50mV forward
bias of either diode for 2.7V
≤
V
CC
≤
3.6V. This means that as long as the
reference or analog input does not exceed the supply voltage by more than
50mV, the output code will be correct. To achieve an absolute 0V to 3V
input voltage range, it will therefore require a minimum supply voltage of
2.950V over initial tolerance, temperature variations and loading.
Note 8:
Recommended operating condition.
Note 9:
Channel leakage current is measured after the channel selection.
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
Supply Current vs Sample Rate
Reference Current vs Temperature
Supply Current vs Temperature
SAMPLE FREQUENCY (kHz)
0.1
1
S
μ
A
10
100
1000
1
10
100
1594L/98L G01
T
A
= 25
°
C
V
CC
= 2.7V
V
REF
= 2.5V
f
CLK
= 200kHz
TEMPERATURE (
°
C)
–55
60
S
μ
A
100
180
220
260
–15
25
45
125
1594L/98L G02
140
–35
5
65
85 105
T
A
= 25
°
C
V
CC
= 2.7V
V
REF
= 2.5V
f
CLK
= 200kHz
f
SMPL
= 10.5kHz
TEMPERATURE (
°
C)
–55
43
R
μ
A
44
46
47
48
53
50
–15
25
45
125
1594L/98L G03
45
51
52
49
–35
5
65
85 105
V
CC
= 2.7V
V
REF
= 2.5V
f
CLK
= 200kHz
f
SMPL
= 10.5kHz
The
G
denotes the specifications which apply over the full operating temperature range,
相關(guān)PDF資料
PDF描述
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