3
LTC1420
1420fa
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCM Output Voltage
IOUT = 0
2.475
2.50
2.525
V
VCM Output Tempco
IOUT = 0
±15
ppm/°C
VCM Line Regulation
4.75V ≤ VDD ≤ 5.25V
0.6
mV/V
– 5.25V ≤ VSS ≤ –4.75V
0.03
mV/V
VCM Output Resistance
0.1mA ≤ IOUT ≤ 0.1mA
8
VREF Output Voltage
SENSE = GND, IOUT = 0
4.096
V
SENSE = VREF, IOUT = 0
2.048
V
SENSE = VDD
Drive VREF with
V
External Reference
VREF Output Tempco
±15
ppm/°C
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
S/(N + D)
Signal-to-Noise Plus Distortion Ratio
1MHz Input Signal
68.5
71.4
dB
5MHz Input Signal
68
71.0
dB
THD
Total Harmonic Distortion
1MHz Input Signal, First 5 Harmonics
–84
– 77
dB
5MHz Input Signal, First 5 Harmonics
–81
– 73
dB
SFDR
Peak Harmonic or Spurious Noise
1MHz Input Signal
– 85
– 78.5
dB
5MHz Input Signal
–83
– 75
dB
IMD
Intermodulation Distortion
fIN1 = 29.37kHz, fIN2 = 32.446kHz
– 80
dB
Full-Power Bandwidth
100
MHz
Input Referred Noise
±2.048V Input Range
0.22
LSBRMS
±1.024V Input Range, 2x Mode (SENSE = GAIN = 0V)
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
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage (Clock Pin)
VDD = 5.25V, VSS = 0V
2.4
V
VDD = 5.25V, VSS = – 5V
3.5
V
VIL
Low Level Input Voltage (Clock Pin)
VDD = 4.75V, VSS = 0V
0.8
V
VDD = 4.75V, VSS = – 5V
1V
IIN
Digital Input Current
VIN = 0V to VDD
±10
A
CIN
Digital Input Capacitance
1.8
pF
VOH
High Level Output Voltage
0VDD = 4.75V, IO = –10A
4.74
V
0VDD = 4.75V, IO = –200A
4.0
4.71
V
0VDD = 2.7V, IO = –10A
2.6
V
0VDD = 2.7V, IO = –200A
2.3
V
VOL
Low Level Output Voltage
0VDD = 4.75V, IO = 160A
0.05
V
0VDD = 4.75V, IO = 1.6mA
0.10
0.4
V
0VDD = 2.7V, IO = 160A
0.05
V
0VDD = 2.7V, IO = 1.6mA
0.10
0.4
V
ISOURCE
Output Source Current
VOUT = 0V
50
mA
ISINK
Output Sink Current
VOUT = VDD
35
mA
The
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)
TA = 25°C. Specifications are guaranteed for both dual supply and single supply operation. (Note 5)
The
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)
DY A IC ACCURACY
U
W
INTERNAL REFERENCE CHARACTERISTICS
UU
U
DIGITAL I PUTS A D DIGITAL OUTPUTS
U
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