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LTC2428I Datasheet(PDF) 3 Page - Linear Technology

Part # LTC2428I
Description  4-/8-Channel 20-Bit uPower No Latency ADCs
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2428I Datasheet(HTML) 3 Page - Linear Technology

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3
LTC2424/LTC2428
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Input Voltage Range
(Note 14)
q
– 0.125 • VREF
1.125 • VREF
V
VREF
Reference Voltage Range
q
0.1
VCC
V
CS(IN)
Input Sampling Capacitance
1
pF
CS(REF)
Reference Sampling Capacitance
1.5
pF
IIN(LEAK)
Input Leakage Current
CS = VCC
q
–100
1
100
nA
IREF(LEAK)
Reference Leakage Current
VREF = 2.5V, CS = VCC
q
– 100
1
100
nA
IIN(MUX)
On Channel Leakage Current
VS = 2.5V (Note 15)
q
±20
nA
RON
MUX On-Resistance
IOUT = 1mA, VCC = 2.7V
q
250
300
IOUT = 1mA, VCC = 5V
q
120
250
MUX
∆RON vs Temperature
0.5
%/
°C
∆RON vs VS (Note 15)
20
%
IS(OFF)
MUX Off Input Leakage
Channel Off, VS = 2.5V
q
±20
nA
ID(OFF)
MUX Off Output Leakage
Channel Off, VD = 2.5V
q
±20
nA
tOPEN
MUX Break-Before-Make Interval
290
ns
tON
Enable Turn-On Time
VS = 1.5V, RL = 3.4k, CL = 15pF
490
ns
tOFF
Enable Turn-Off Time
VS = 1.5V, RL = 3.4k, CL = 15pF
190
ns
QIRR
MUX Off Isolation
VIN = 2VP-P, RL = 1k, f = 100kHz
70
dB
QINJ
Charge Injection
RS = 0Ω, CL = 1000pF, VS = 1V
±1pC
CS(OFF)
Input Off Capacitance (MUX)
10
pF
CD(OFF)
Output Off Capacitance (MUX)
10
pF
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
A ALOG I PUT A D REFERE CE
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Total Unadjusted Error
VREF = 2.5V
8
ppm of VREF
VREF = 5V
16
ppm of VREF
Output Noise
VIN = 0V, VREF = 5V (Note 13)
6
µVRMS
Output Noise (Fast Mode)
VREF = 5V, 100 Samples/Second, fO = 2.048MHz
20
µVRMS
Normal Mode Rejection 60Hz
±2%
(Note 7)
q
110
130
dB
Normal Mode Rejection 50Hz
±2%
(Note 8)
q
110
130
dB
Power Supply Rejection, DC
VREF = 2.5V, VIN = 0V
100
dB
Power Supply Rejection, 60Hz
±2% VREF = 2.5V, VIN = 0V, (Notes 7, 16)
110
dB
Power Supply Rejection, 50Hz
±2% VREF = 2.5V, VIN = 0V, (Notes 8, 16)
110
dB
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Notes 3, 4)
CONVERTER CHARACTERISTICS


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