LTC1420I データシートの表示（PDF） - Linear Technology
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LTC1420I Datasheet PDF : 20 Pages
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LTC1420
DY A IC ACCURACY The q denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. VDD = 5V, VSS = – 5V, fSAMPLE = 10MHz, VREF = 4.096V. + AIN = – 0.1dBFS single ended input,
– AIN = 0V. (Note 6)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
S/(N + D) Signal-to-Noise Plus Distortion Ratio
1MHz Input Signal
5MHz Input Signal
q 68.5 71.4
dB
q 68
71.0
dB
THD
Total Harmonic Distortion
1MHz Input Signal, First 5 Harmonics
5MHz Input Signal, First 5 Harmonics
q
– 84 – 77
dB
q
– 81 – 73
dB
SFDR Peak Harmonic or Spurious Noise
1MHz Input Signal
5MHz Input Signal
q
– 85 – 78.5
dB
q
– 83 – 75
dB
IMD
Intermodulation Distortion
Full-Power Bandwidth
fIN1 = 29.37kHz, fIN2 = 32.446kHz
– 80
dB
100
MHz
Input Referred Noise
±2.048V Input Range
±1.024V Input Range, 2x Mode (SENSE = GAIN = 0V)
0.22
LSBRMS
0.33
LSBRMS
Overvoltage Recovery Time
1.5x FS Input to 0 (Settling to 1LSB)
15
ns
Full-Scale Step Acquisition Time
Settling to 1LSB
15
ns
UU
U
INTERNAL REFERENCE CHARACTERISTICS
TA = 25°C. Specifications are guaranteed for both dual supply and single supply operation. (Note 5)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VCM Output Voltage
VCM Output Tempco
VCM Line Regulation
VCM Output Resistance
VREF Output Voltage
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
2.475 2.50 2.525
±15
0.6
0.03
8
4.096
2.048
Drive VREF with
External Reference
V
ppm/°C
mV/V
mV/V
Ω
V
V
V
VREF Output Tempco
±15
ppm/°C
DIGITAL I PUTS A D DIGITAL OUTPUTS The q denotes the 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 5)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IIN
Digital Input Current
CIN
Digital Input Capacitance
VOH
High Level Output Voltage
VOL
Low Level Output Voltage
ISOURCE
ISINK
Output Source Current
Output Sink Current
VDD = 5.25V, VSS = 0V
VDD = 5.25V, VSS = – 5V
VDD = 4.75V, VSS = 0V
VDD = 4.75V, VSS = – 5V
VIN = 0V to VDD
0VDD = 4.75V, IO = –10µA
0VDD = 4.75V, IO = –200µA
0VDD = 2.7V, IO = –10µA
0VDD = 2.7V, IO = –200µA
0VDD = 4.75V, IO = 160µA
0VDD = 4.75V, IO = 1.6mA
0VDD = 2.7V, IO = 160µA
0VDD = 2.7V, IO = 1.6mA
VOUT = 0V
VOUT = VDD
q 2.4
V
q 3.5
V
q
0.8
V
q
1
V
q
±10
µA
1.8
pF
4.74
V
q 4.0
4.71
V
2.6
V
q 2.3
V
0.05
V
q
0.10 0.4
V
0.05
V
q
0.10 0.4
V
50
mA
35
mA
3
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