LTC1273(Rev0) Просмотр технического описания (PDF) - Linear Technology
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LTC1273 Datasheet PDF : 24 Pages
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LTC1273
LTC1275/LTC1276
DY A IC ACCURACY (Note 5)
SYMBOL PARAMETER
S/(N + D) Signal-to-Noise Plus Distortion Ratio
THD
Total Harmonic Distortion
Up to 5th Harmonic
Peak Harmonic or Spurious Noise
IMD
Intermodulation Distortion
Full Power Bandwidth
Full Linear Bandwidth (S/(N + D) ≥ 68dB)
CONDITIONS
50kHz/150kHz Input Signal
50kHz/150kHz Input Signal
50kHz/150kHz Input Signal
fIN1 = 29.37kHz, fIN2 = 32.446kHz
LTC1273A/ LTC1275A/ LTC1276A
LTC1273B/ LTC1275B/ LTC1276B
MIN
TYP
MAX
72/70
– 83/– 74
UNITS
dB
dB
– 85/– 76
dB
– 80
dB
4.5
MHz
200
kHz
A ALOG I PUT (Note 5)
SYMBOL PARAMETER
CONDITIONS
VIN
Analog Input Range (Note 9)
4.95V ≤ VDD ≤ 5.25V (LTC1273)
4.75V ≤ VDD ≤ 5.25V, – 5.25V ≤ VSS ≤ – 2.45V (LTC1275)
4.95V ≤ VDD ≤ 5.25V, – 5.25V ≤ VSS ≤ – 4.95V (LTC1276)
IIN
Analog Input Leakage Current CS = High
CIN
Analog Input Capacitance
Between Conversions (Sample Mode)
During Conversions (Hold Mode)
tACQ
Sample-and-Hold
Commercial
Acquisition Time
Military
UU
U
I TER AL REFERE CE CHARACTERISTICS (Note 5)
LTC1273A/LTC1275A/LTC1276A
LTC1273B/LTC1275B/LTC1276B
MIN TYP MAX UNITS
q
0 to 5
V
q
±2.5
V
q
±5
V
q
±1
µA
50
pF
5
pF
q
600
ns
q
1000
ns
PARAMETER
CONDITIONS
LTC1273A/LTC1275A/LTC1276A
MIN
TYP
MAX
VREF Output Voltage
IOUT = 0
2.400
2.420 2.440
VREF Output Tempco
IOUT = 0
q
±5
±25
VREF Line Regulation
4.95V ≤ VDD ≤ 5.25V
0.01
– 5.25V ≤ VSS ≤ – 4.95V
0.01
VREF Load Regulation
0V ≤ |IOUT| ≤ 1mA
2
U
U
DIGITAL I PUTS A D DIGITAL OUTPUTS (Note 5)
LTC1273B/LTC1275B/LTC1276B
MIN
TYP
MAX
2.400 2.420 2.440
±10
±45
0.01
0.01
2
UNITS
V
ppm/°C
LSB/V
LSB/V
LSB/mA
SYMBOL
VIH
VIL
IIN
CIN
VOH
PARAMETER
High Level Input Voltage
Low Level Input Voltage
Digital Input Current
Digital Input Capacitance
High Level Output Voltage
CONDITIONS
VDD = 5.25V
VDD = 4.95V
VIN = 0V to VDD
VDD = 4.95V
IO = – 10µA
IO = – 200µA
LTC1273A/LTC1275A/LTC1276A
LTC1273B/LTC1275B/LTC1276B
MIN TYP MAX UNITS
q
2.4
V
q
0.8
V
q
±10
µA
5
pF
4.7
V
q
4.0
V
3
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