LTC1745 Datasheet, PDF (3/20 Pages) Linear Technology – Low Noise,12-Bit, 25Msps ADC

LTC1745
DY A IC ACCURACY The q indicates specifications which apply over the full operating temperature range,
otherwise specifications are at T_A = 25°C. A_IN = –1dBFS. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
SNR
Signal-to-Noise Ratio
5MHz Input Signal (2V Range)
5MHz Input Signal (3.2V Range)
q 71
30MHz Input Signal (2V Range)
30MHz Input Signal (3.2V Range)
70MHz Input Signal (2V Range)
70MHz Input Signal (3.2V Range)
SFDR Spurious Free Dynamic Range
5MHz Input Signal (2V Range)
5MHz Input Signal (3.2V Range)
q 78
30MHz Input Signal (2V Range)
30MHz Input Signal (3.2V Range)
70MHz Input Signal (2V Range)
70MHz Input Signal (3.2V Range)
S/(N + D) Signal-to-(Noise + Distortion) Ratio 5MHz Input Signal (2V Range)
5MHz Input Signal (3.2V Range)
q 71
30MHz Input Signal (2V Range)
30MHz Input Signal (3.2V Range)
70MHz Input Signal (2V Range)
70MHz Input Signal (3.2V Range)
THD
Total Harmonic Distortion
5MHz Input Signal, First 5 Harmonics (2V Range)
5MHz Input Signal, First 5 Harmonics (3.2V Range)
30MHz Input Signal, First 5 Harmonics (2V Range)
30MHz Input Signal, First 5 Harmonics (3.2V Range)
70MHz Input Signal, First 5 Harmonics (2V Range)
70MHz Input Signal, First 5 Harmonics (3.2V Range)
IMD
Intermodulation Distortion
Sample-and-Hold Bandwidth
f_IN1 = 4MHz, f_IN2 = 5.1MHz (2V Range)
f_IN1 = 4MHz, f_IN2 = 5.1MHz (3.2V Range)
R_SOURCE = 50Ω
TYP
71
72.5
71
72
70
71.5
96
91
93.5
87
79
70.5
71
72.5
71
72
69.5
68.5
– 92
– 90
– 91.5
– 86.5
–77.5
–70
85
84
240
MAX UNITS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dB
dB
dB
dB
dB
dB
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dB
dB
dB
dB
dB
dB
dBc
dBc
MHz
UU
U
I TER AL REFERE CE CHARACTERISTICS (Note 5)
PARAMETER
V_CM Output Voltage
V_CM Output Tempco
V_CM Line Regulation
V_CM Output Resistance
CONDITIONS
I_OUT = 0
I_OUT = 0
4.75V ≤ V_DD ≤ 5.25V
1mA ≤ I_OUT ≤ 1mA
MIN
TYP
MAX UNITS
2.29
2.35
2.41
V
± 30
ppm/°C
3
mV/V
4
Ω
1745f
3