LTC2175-12_15 Datasheet, PDF (4/34 Pages) Linear Technology – 12-Bit, 125Msps/105Msps/ 80Msps Low Power Quad ADCs

LTC2175-12/
LTC2174-12/LTC2173-12
Dynamic Accuracy The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T_A = 25°C. A_IN = –1dBFS. (Note 5)
LTC2175-12
LTC2174-12
LTC2173-12
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
SNR
Signal-to-Noise Ratio
5MHz Input
70.6
70.6
70.6
dBFS
70MHz Input
l 69.3 70.6
69.2 70.5
69.3 70.5
dBFS
140MHz Input
70.3
70.3
70.3
dBFS
SFDR Spurious Free Dynamic Range 5MHz Input
88
88
88
dBFS
2nd or 3rd Harmonic
70MHz Input
l 74 85
74 85
76 85
dBFS
140MHz Input
82
82
82
dBFS
Spurious Free Dynamic Range 5MHz Input
90
90
90
dBFS
4th Harmonic or Higher
70MHz Input
l 84 90
84 90
85 90
dBFS
140MHz Input
90
90
90
dBFS
S/(N+D) Signal-to-Noise Plus
5MHz Input
70.6
70.6
70.6
dBFS
Distortion Ratio
70MHz Input
l 68.6 70.4
68.7 70.4
68.9 70.4
dBFS
140MHz Input
70
70
70
dBFS
Crosstalk, Near Channel
10MHz Input (Note 12)
–90
–90
–90
dBc
Crosstalk, Far Channel
10MHz Input (Note 12)
–105
–105
–105
dBc
Internal Reference Characteristics The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T_A = 25°C. A_IN = –1dBFS. (Note 5)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V_CM Output Voltage
V_CM Output Temperature Drift
V_CM Output Resistance
I_OUT = 0
–600µA < I_OUT < 1mA
0.5 • V_DD – 25mV
0.5 • V_DD
±25
4
0.5 • V_DD + 25mV
V
ppm/°C
Ω
V_REF Output Voltage
I_OUT = 0
1.225
1.250
1.275
V
V_REF Output Temperature Drift
V_REF Output Resistance
V_REF Line Regulation
–400µA < I_OUT < 1mA
1.7V < V_DD < 1.9V
±25
ppm/°C
7
Ω
0.6
mV/V
4
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