LTC2270 Datasheet, PDF (7/36 Pages) Linear Technology – 16-Bit, 20Msps Low Noise Dual ADC

LTC2270
POWER REQUIREMENTS The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T_A = 25°C. (Note 9)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
CMOS Output Modes: Full Data Rate and Double Data Rate
V_DD
OV_DD
I_VDD
Analog Supply Voltage
Output Supply Voltage
Analog Supply Current
(Note 10)
(Note 10)
DC Input
Sine Wave Input
l 1.7 1.8 1.9
V
l 1.1 1.8 1.9
V
l
89 100
mA
89.5
mA
I_OVDD
P_DISS
Digital Supply Current
Power Dissipation
LVDS Output Mode
Sine Wave Input, OV_DD = 1.2V
DC Input
Sine Wave Input, OV_DD = 1.2V
2
mA
l
160 180 mW
164
mW
V_DD
OV_DD
I_VDD
Analog Supply Voltage
Output Supply Voltage
Analog Supply Current
(Note 10)
(Note 10)
Sine Input, 1.75mA Mode
Sine Input, 3.5mA Mode
l 1.7 1.8 1.9
V
l 1.7 1.8 1.9
V
91
mA
l
93 105
mA
I_OVDD
P_DISS
Digital Supply Current
(0V_DD = 1.8V)
Power Dissipation
Sine Input, 1.75mA Mode
Sine Input, 3.5mA Mode
Sine Input, 1.75mA Mode
Sine Input, 3.5mA Mode
38
mA
l
73 82
mA
232
mW
l
299 337 mW
All Output Modes
P_SLEEP
P_NAP
P_DIFFCLK
Sleep Mode Power
Nap Mode Power
Power Increase with Differential Encode Mode Enabled
(No increase for Nap or Sleep Modes)
0.5
mW
12
mW
20
mW
TIMING CHARACTERISTICS 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
CONDITIONS
MIN TYP MAX UNITS
f_S
Sampling Frequency
t_L
ENC Low Time (Note 8)
(Note 10)
Duty Cycle Stabilizer Off
Duty Cycle Stabilizer On
l1
20
MHz
l 23.5 25 500
ns
l 2 25 500
ns
t_H
ENC High Time (Note 8)
Duty Cycle Stabilizer Off
Duty Cycle Stabilizer On
l 23.5 25 500
ns
l 2 25 500
ns
t_AP
Sample-and-Hold Acquisition Delay Time
0
ns
SYMBOL PARAMETER
CONDITIONS
Digital Data Outputs (CMOS Modes: Full Data Rate and Double Data Rate)
t_D
ENC to Data Delay
t_C
ENC to CLKOUT Delay
C_L = 5pF (Note 8)
C_L = 5pF (Note 8)
t_SKEW
DATA to CLKOUT Skew
Pipeline Latency
t_D – t_C (Note 8)
Full Data Rate Mode
Double Data Rate Mode
MIN
TYP
MAX
UNITS
l
1.1
1.7
3.1
ns
l
1
1.4
2.6
ns
l
0
0.3
0.6
ns
6
6
Cycles
6.5
6.5
Cycles
2270f
7