LTC1277 Просмотр технического описания (PDF) - Linear Technology
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LTC1277 Datasheet PDF : 20 Pages
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LTC1274/LTC1277
A ALOG I PUT (Note 5)
SYMBOL PARAMETER
VIN
Analog Input Range (Note 10)
IIN
Analog Input Leakage Current
CIN
Analog Input Capacitance
CONDITIONS
4.75V ≤ VDD ≤ 5.25V (Unipolar)
4.75V ≤ VDD ≤ 5.25V, – 5.25V ≤ VSS ≤ – 2.45V (Bipolar)
CS = High
Between Conversions (Sample Mode)
During Conversions (Hold Mode)
DY A IC ACCURACY (Notes 5, 9)
SYMBOL PARAMETER
CONDITIONS
S/(N + D) Signal-to-Noise
Plus Distortion Ratio
50kHz Input Signal
100kHz Input Signal
THD
Total Harmonic Distortion
Up to 5th Harmonic
50kHz Input Signal
100kHz Input Signal
Peak Harmonic or
Spurious Noise
50kHz Input Signal
100kHz Input Signal
IMD
Intermodulation Distortion
fa = 96.95kHz, fb = 97.68kHz
2nd Order Terms
3rd Order Terms
Full Power Bandwidth
Full Linear Bandwidth
[S/(N + D) ≥ 68dB]
UU
U
I TER AL REFERE CE CHARACTERISTICS (Note 5)
PARAMETER
CONDITIONS
VREF Output Voltage
IOUT = 0
VREF Output Tempco
IOUT = 0
VREF Line Regulation
4.75V ≤ VDD ≤ 5.25V
– 5.25V ≤ VSS ≤ – 4.75V
VREF Load Regulation
– 5mA ≤ IOUT ≤ 70µA
U
U
DIGITAL I PUTS A D DIGITAL OUTPUTS
(Note 5)
SYMBOL PARAMETER
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IIN
Digital Input Current
CIN
Digital Input Capacitance
VOH
High Level Output Voltage, All Logic Outputs
VOL
Low Level Output Voltage,
All Logic Outputs
CONDITIONS
VDD = 5.25V
VDD = 4.75V
VIN = 0V to VDD
VDD = 4.75V
IO = – 10µA
IO = – 200µA
VLOGIC = 2.7V (LTC1277)
IO = – 10µA
IO = – 200µA
VDD = 4.75V
IO = 160µA
IO = 1.6mA
VLOGIC =2.7V (LTC1277)
IO = 160µA
IO = 1.6mA
MIN TYP MAX
●
0 to 4.096
●
± 2.048
●
±1
45
5
UNITS
V
V
µA
pF
pF
MIN TYP MAX UNITS
73
dB
● 70
72.5
dB
– 84
dB
●
– 82 – 76
dB
– 84
dB
●
– 82 – 76
dB
– 78
dB
– 81
dB
2
MHz
350
kHz
MIN
2.400
●
TYP
2.420
±10
0.01
0.01
2
MAX
2.440
±45
UNITS
V
ppm/°C
LSB/V
LSB/V
LSB/mA
MIN TYP MAX UNITS
● 2.4
V
●
0.8
V
●
±10
µA
5
pF
4.70
V
● 4.0
V
2.65
V
2.60
V
0.05
V
●
0.10 0.4
V
0.05
V
0.10
V
3
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