LTC2442_15 Datasheet, PDF (3/32 Pages) Linear Technology – 24-Bit High Speed 4-Channel ADC with Integrated Amplifier

LTC2442
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. (Notes 3, 4, 15)
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
Resolution (No Missing Codes)
0.1V ≤ V_REF ≤ V_CC, –0.5 • V_REF ≤ V_IN ≤ 0.5 • V_REF (Note 5)
l 24
Bits
Integral Nonlinearity
Offset Error
Offset Error Drift
Positive Full-Scale Error
Positive Full-Scale Error Drift
VRV^CC_E^CC_F+^{===55VV4.,,0RR9EE6FFV++}_,
= 5V, REF^– =
= 2.5V, REF^–
REF^– = GND,
GND, V_INCM = 2.5V (Note 6, 14)
= GND, V_INCM = 1.25V (Note 6, 14)
V_INCM = 2.048V (Note 6, 14)
l
l
2.5V
GND
≤
≤
REF⁺
SEL⁺
≤
=
VS_CECL,–R≤EVF^–CC=(GNNoDte,
12)
l
2.5V
GND
≤
≤
REF⁺
SEL⁺
≤
=
VS_CECL,–R≤EVF^–CC=
GND,
REF⁺ = 5V, REF^– = GND, SEL⁺ = 3.75V, SEL^– = 1.25V
l
REF⁺ = 2.5V, REF^– = GND, SEL⁺ = 1.875V, SEL^– = 0.625V
l
2.5V
SEL⁺
≤
=
REF⁺
0.75
•^≤RVECF^{C+,,RSEEFL––=}=^G0^N.2^D5^,
•
REF⁺
2
10
2
7
1
2.5 5
ppm of V_REF
ppm of V_REF
ppm of V_REF
µV
20
nV/°C
10 50
10 50
ppm of V_REF
ppm of V_REF
0.2
ppm of V_REF/°C
Negative Full-Scale Error
REF⁺ = 5V, REF^– = GND, SEL⁺ = 1.25V, SEL^– = 3.75V
l
REF⁺ = 2.5V, REF^– = GND, SEL⁺ = 0.625V, SEL^– = 1.875V
l
Negative Full-Scale Error Drift
2.5V
SEL⁺
≤
=
REF⁺
0.25
•^≤RVECF^{C+,,RSEEFL––=}=^G0^N.7^D5^,
•
REF⁺
10 50
10 50
ppm of V_REF
ppm of V_REF
0.2
ppm of V_REF/°C
Total Unadjusted Error
Input Common Mode Rejection DC
55RVVEF≤≤₊VV=_{CCC2C.≤5≤V55,.5.R5VVE, ,FR–REE=FF}⁺_G+=N=2D5.5,VVV,,_{INRRCEEMFF––===1GG.2NN5DDV,, (VVNIINoNCtCeMM6==)} 12.2.55VV _((NNoottee
6)
6)
2.5V
GND
≤
≤
REF⁺
SEL^–
≤
=
VS_CECL,+R≤EVF^–CC=
GND,
12
ppm of V_REF
12
ppm of V_REF
12
ppm of V_REF
120
dB
analog input and referenc e The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. (Notes 3, 15)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
SEL⁺
Absolute/Common Mode SEL⁺ Voltage SEL⁺ is the Positive Selected
l GND – 0.3
Input Channel, see Table 3
SEL^–
Absolute/Common Mode SEL^– Voltage SEL^– is the Negative Selected
l GND – 0.3
Input Channel, see Table 3
V_CC + 0.3
V
V_CC + 0.3
V
V_IN
Input Differential Voltage Range
(SEL⁺ – SEL^–)
REF⁺
Absolute/Common Mode REF⁺ Voltage
REF^–
Absolute/Common Mode REF^– Voltage
l –V_REF/2
l
0.1
l GND
V_REF/2
V
V_CC
V
V_CC – 0.1
V
V_REF
Reference Differential Voltage Range
(REF⁺ – REF^–)
l
0.1
V_CC
V
C_S(ADCINA)
ADCINA Sampling Capacitance
2
pF
C_S(ADCINB)
ADCINB Sampling Capacitance
2
C_S(REF⁺₎
REF⁺ Sampling Capacitance
2
C_S(REF^–₎
REF^– Sampling Capacitance
2
I_{DC_LEAK(SEL}⁺_{, SEL}^–_,
REF⁺, REF^–)
Leakage Current, Inputs and Reference
G^CSND=,VR^CE^CF, ^+S=EL5+V=,
GND, SEL^– =
REF^– = GND
l
–15
1
t_OPEN
MUX Break-Before-Make
50
pF
pF
pF
15
nA
ns
QIRR
MUX Off Isolation
V_IN = 2V_P-P DC to 1.8MHz
120
dB
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