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AD6645-80/PCB 数据手册 - ADI（亚德诺）
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AD6645-80/PCB数据手册
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AD6645
Rev. D | Page 4 of 24
DIGITAL SPECIFICATIONS
AV
CC
= 5 V, DV
CC
= 3.3 V; T
MIN
and T
MAX
at rated speed grade, unless otherwise noted.
Table 2.
Test AD6645ASQ-80/AD6645ASV-80 AD6645ASQ-105/AD6645ASV-105
Parameter Temp Level Min Typ Max Min Typ Max Unit
ENCODE INPUTS (ENCODE, ENCODE)
Differential Input Voltage
1
Full IV 0.4 0.4 V p-p
Differential Input Resistance 25°C V 10 10 kΩ
Differential Input Capacitance 25°C V 2.5 2.5 pF
LOGIC OUTPUTS (D13 to D0, DRY, OVR)
Logic Compatibility CMOS CMOS
Logic 1 Voltage (DV
CC
= 3.3 V)
2
Full II 2.85 DV
CC
− 2 2.85 DV
CC
− 2 V
Logic 0 Voltage (DV
CC
= 3.3 V)
2
Full II 0.2 0.5 0.2 0.5 V
Output Coding Twos complement Twos complement
DMID Full V DV
CC
/2 DV
CC
/2 V
1
All ac specifications tested by driving ENCODE and
ENCODE
differentially.
2
Digital output logic levels: DV
CC
= 3.3 V, C
LOAD
= 10 pF. Capacitive loads >10 pF degrades performance.
AC SPECIFICATIONS
All ac specifications tested by driving ENCODE and
ENCODE
differentially. AV
CC
= 5 V, DV
CC
= 3.3 V; ENCODE,
ENCODE
, T
MIN
and
T
MAX
at rated speed grade, unless otherwise noted.
Table 3.
Test
AD6645ASQ-80/
AD6645ASV-80
AD6645ASQ-105/
AD6645ASV-105
Parameter Temp Level Min Typ Max Min Typ Max Unit Conditions
SNR
Analog Input @ −1 dBFS 25°C V 75.0 75.0 dB At 15.5 MHz
Full II 72.5 74.5 dB At 30.5 MHz
25°C I 72.5 74.5 dB At 37.7 MHz
Full II 72.0 73.5 72.0 73.5 dB At 70.0 MHz
25°C V 73.0 73.0 dB At 150.0 MHz
25°C V 72.0 72.0 dB At 200.0 MHz
SINAD
Analog Input @ −1 dBFS 25°C V 75.0 75.0 dB At 15.5 MHz
Full II 72.5 74.5 dB At 30.5 MHz
25°C I 72.5 74.5 dB At 37.7 MHz
Full V 73.0 73.0 dB At 70.0 MHz
25°C V 68.5 67.5 dB At 150.0 MHz
25°C V 62.5 62.5 dB At 200.0 MHz
WORST HARMONIC (SECOND OR THIRD)
Analog Input @ −1 dBFS 25°C V 93.0 93.1 dBc At 15.5 MHz
Full II 85.0 93.0 dBc At 30.5 MHz
25°C I 85.0 93.0 dBc At 37.7 MHz
Full V 89.0 87.0 dBc At 70.0 MHz
25°C V 70.0 70.0 dBc At 150.0 MHz
25°C V 63.5 63.5 dBc At 200.0 MHz
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