LTC1740I Ver la hoja de datos (PDF) - Linear Technology
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LTC1740I Datasheet PDF : 16 Pages
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LTC1740
A ALOG I PUT The q denotes specifications which apply over the full operating temperature range, otherwise
specifications are at TA = 25°C. Specifications are guaranteed for both dual supply and single supply operation. (Note 4)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN
Analog Input Range
IIN
Analog Input Leakage Current
CIN
Analog Input Capacitance
VREF = 4.5V (SENSE = 0V)
VREF = 2.25V (SENSE Tied to VREF)
External VREF (SENSE = 5V)
Between Conversions
During Conversions
q
± 2.50
V
q
±1.25
V
q
±VREF/1.8
V
q
±10
µA
12
pF
4
pF
tACQ
tAP
tjitter
CMRR
Sample-and-Hold Acquisition Time
Sample-and-Hold Aperture Delay Time
Sample-and-Hold Aperture Delay Time Jitter
Analog Input Common Mode Rejection Ratio
VSS < (–AIN = +AIN) < VDD
67
– 900
0.6
75
ns
ps
psRMS
dB
DY A IC ACCURACY VDD = OVDD = 5V, VSS = 0V, VREF = 4.5V, AIN = – 0.1dBFS, AC coupled differential input.
SYMBOL PARAMETER
S/(N + D) Signal-to-Noise Plus Distortion Ratio
THD
Total Harmonic Distortion
SFDR Spurious Free Dynamic Range
Full-Power Bandwidth
Input Referred Noise
CONDITIONS
1MHz Input Signal
2.5MHz Input Signal
1MHz Input Signal, First 5 Harmonics
2.5MHz Input Signal, First 5 Harmonics
1MHz Input Signal
2.5MHz Input Signal
MIN TYP MAX UNITS
79.1
dB
79.0
dB
– 90
dB
– 89
dB
92
dB
91
dB
80
MHz
0.45
LSBRMS
UU
U
I TER AL REFERE CE CHARACTERISTICS
TA = 25°C. Specifications are guaranteed for both dual supply and single supply operation. (Note 4)
PARAMETER
VCM Output Voltage
VCM Output Tempco
VCM Line Regulation
VCM Output Resistance
VREF Output Voltage
VREF Output Tempco
CONDITIONS
IOUT = 0
IOUT = 0
4.75V ≤ VDD ≤ 5.25V
– 5.25V ≤ VSS ≤ – 4.75V
0.1mA ≤ IOUT ≤ 0.1mA
SENSE = GND, IOUT = 0
SENSE = VREF, IOUT = 0
SENSE = VDD
MIN TYP MAX
2.475 2.500 2.525
±15
0.6
0.03
8
4.500
2.250
Drive VREF with
External Reference
±15
UNITS
V
ppm/°C
mV/V
mV/V
Ω
V
V
V
ppm/°C
1740f
3
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