LTC2265-14_15 Datasheet, PDF (4/32 Pages) Linear Technology – 14-Bit, 65Msps/40Msps/ 25Msps Low Power Dual ADCs

LTC2265-14/
LTC2264-14/LTC2263-14
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)
LTC2265-14
LTC2264-14
LTC2263-14
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
SNR
Signal-to-Noise Ratio
5MHz Input
73.7
73.5
72.9
dBFS
30MHz Input
l 72.3 73.7
72 73.4
71.4 72.9
dBFS
70MHz Input
73.5
73.4
72.8
dBFS
140MHz Input
73
72.8
72.3
dBFS
SFDR Spurious Free Dynamic Range 5MHz Input
90
90
90
dBFS
2^nd or 3^rd Harmonic
30MHz Input
l 78 90
79 90
79 90
dBFS
70MHz Input
89
89
89
dBFS
140MHz Input
84
84
84
dBFS
Spurious Free Dynamic Range 5MHz Input
90
90
90
dBFS
4^th Harmonic or Higher
30MHz Input
l 85 90
85 90
85 90
dBFS
70MHz Input
90
90
90
dBFS
140MHz Input
90
90
90
dBFS
S/(N+D) Signal-to-Noise Plus
5MHz Input
73.6
73.3
72.8
dBFS
Distortion Ratio
30MHz Input
l 71.5 73.5
71.6 73.2
70.9 72.7
dBFS
70MHz Input
73.2
73.1
72.5
dBFS
140MHz Input
72.5
72.3
71.9
dBFS
Crosstalk
10MHz Input
–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
I_OUT = 0
0.5 • V_DD – 25mV
0.5 • V_DD
0.5 • V_DD + 25mV
V
V_CM Output Temperature Drift
±25
ppm/°C
V_CM Output Resistance
V_REF Output Voltage
V_REF Output Temperature Drift
V_REF Output Resistance
V_REF Line Regulation
–600µA < I_OUT < 1mA
I_OUT = 0
–400µA < I_OUT < 1mA
1.7V < V_DD < 1.9V
1.225
4
1.250
±25
7
0.6
1.275
Ω
V
ppm/°C
Ω
mV/V
DIGITAL INPUTS AND OUTPUTS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. (Note 5)
SYMBOL PARAMETER
ENCODE INPUTS (ENC⁺, ENC^– )
Differential Encode Mode (ENC^– Not Tied to GND)
CONDITIONS
MIN
TYP
MAX UNITS
V_ID
Differential Input Voltage
V_ICM
Common Mode Input Voltage
V_IN
Input Voltage Range
R_IN
Input Resistance
C_IN
Input Capacitance
(Note 8)
Internally Set
Externally Set (Note 8)
ENC⁺, ENC^– to GND
(See Figure 10)
l
0.2
V
1.2
V
l
1.1
1.6
V
l
0.2
3.6
V
10
kΩ
3.5
pF
4
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