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| LTC2424_09 Datasheet, PDF (3/36 Pages) Linear Technology – 4-/8-Channel 20-Bit mPower No Latency DSTM ADCs | |||
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LTC2424/LTC2428
CONVERTER CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Notes 3, 4)
PARAMETER
Total Unadjusted Error
Output Noise
Output Noise (Fast Mode)
Normal Mode Rejection 60Hz ±2%
Normal Mode Rejection 50Hz ±2%
Power Supply Rejection, DC
Power Supply Rejection, 60Hz ±2%
Power Supply Rejection, 50Hz ±2%
CONDITIONS
VREF = 2.5V
VREF = 5V
VIN = 0V, VREF = 5V (Note 13)
VREF = 5V, 100 Samples/Second, fO = 2.051MHz
(Note 7)
(Note 8)
VREF = 2.5V, VIN = 0V
VREF = 2.5V, VIN = 0V, (Notes 7, 16)
VREF = 2.5V, VIN = 0V, (Notes 8, 16)
MIN
q 110
q 110
TYP MAX
8
16
6
20
130
130
100
110
110
UNITS
ppm of VREF
ppm of VREF
µVRMS
µVRMS
dB
dB
dB
dB
dB
A ALOG I PUT A D REFERE CE The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 3)
SYMBOL
VIN
VREF
CS(IN)
CS(REF)
IIN(LEAK)
IREF(LEAK)
IIN(MUX)
RON
IS(OFF)
ID(OFF)
tOPEN
tON
tOFF
CS(OFF)
CD(OFF)
PARAMETER
Input Voltage Range
Reference Voltage Range
Input Sampling Capacitance
Reference Sampling Capacitance
Input Leakage Current
Reference Leakage Current
On Channel Leakage Current
MUX On-Resistance
MUX âRON vs Temperature
âRON vs VS (Note 15)
MUX Off Input Leakage
MUX Off Output Leakage
MUX Break-Before-Make Interval
Enable Turn-On Time
Enable Turn-Off Time
Input Off Capacitance (MUX)
Output Off Capacitance (MUX)
MUX OFF Isolation Channel-to-Channel
CONDITIONS
(Note 14)
CS = VCC
VREF = 2.5V, CS = VCC
VS = 2.5V (Note 15)
IOUT = 1mA, VCC = 2.7V
IOUT = 1mA, VCC = 5V
Channel Off, VS = 2.5V
Channel Off, VD = 2.5V
VS = 1.5V, RL = 3.4k, CL = 15pF
VS = 1.5V, RL = 3.4k, CL = 15pF
DC
at 1Hz
at fS = 15,360Hz
MIN
q â 0.125 ⢠VREF
q
0.1
q
â 100
q
â 100
q
q
q
q
q
TYP
MAX
UNITS
1.125 ⢠VREF
V
VCC
V
1
pF
1.5
pF
1
100
nA
1
100
nA
±20
nA
250
300
â¦
120
250
â¦
0.5
%/°C
20
%
±20
nA
±20
nA
290
ns
490
ns
190
ns
10
pF
10
pF
120
dB
120
dB
120
dB
3
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