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AD6645-80-PCB 开发手册 - ADI（亚德诺）
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AD6645-80-PCB数据手册
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REV. B
–3–
AD6645
AC SPECIFICATIONS
1
Test AD6645ASQ-80 AD6645ASQ-105
Parameter (Conditions) Temp Level Min Typ Max Min Typ Max Unit
SNR
Analog Input 15.5 MHz 25°CV 75.0 75.0 dB
@ –1 dBFS 30.5 MHz Full II 72.5 74.5 dB
37.7 MHz 25°CI 72.5 74.5 dB
70.0 MHz Full II 72.0 73.5 72.0 73.5 dB
150.0 MHz 25°CV 73.0 73.0 dB
200.0 MHz 25°CV 72.0 72.0 dB
SINAD
Analog Input 15.5 MHz 25°CV 75.0 75.0 dB
@ –1 dBFS 30.5 MHz Full II 72.5 74.5 dB
37.7 MHz 25°CI 72.5 74.5 dB
70.0 MHz Full V 73.0 73.0 dB
150.0 MHz 25°CV 68.5 67.5 dB
200.0 MHz 25°CV 62.5 62.5 dB
WORST HARMONIC (Second or Third)
Analog Input 15.5 MHz 25°CV 93.0 93.1 dBc
@ –1 dBFS 30.5 MHz Full II 85.0 93.0 dBc
37.7 MHz 25°CI 85.0 93.0 dBc
70.0 MHz Full V 89.0 87.0 dBc
150.0 MHz 25°CV 70.0 70.0 dBc
200.0 MHz 25°CV 63.5 63.5 dBc
WORST HARMONIC (Fourth or Higher)
Analog Input 15.5 MHz 25°CV 96.0 96.0 dBc
@ –1 dBFS 30.5 MHz Full II 85.0 95.0 dBc
37.7 MHz 25°CI 86.0 95.0 dBc
70.0 MHz Full V 90.0 90.0 dBc
150.0 MHz 25°CV 90.0 90.0 dBc
200.0 MHz 25°CV 88.0 88.0 dBc
TWO TONE SFDR @30.5 MHz
2, 3
25°CV 100 98.0 dBFS
55.0 MHz
2, 4
25°CV 100 98.0 dBFS
70.0 MHz
2, 5
25°CV 98.0 dBFS
TWO TONE IMD REJECTION
3, 4
F1, F2 @ –7 dBFS 25°CV 90 90 dBc
ANALOG INPUT BANDWIDTH 25°CV 270 270 MHz
NOTES
1
All ac specifications tested by driving ENCODE and ENCODE differentially.
2
Analog input signal power swept from –10 dBFS to –100 dBFS.
3
F1 = 30.5 MHz, F2 = 31.5 MHz.
4
F1 = 55.25 MHz, F2 = 56.25 MHz.
5
F1 = 69.1 MHz, F2 = 71.1 MHz.
Specifications subject to change without notice.
SWITCHING SPECIFICATIONS
Test AD6645ASQ-80 AD6645ASQ-105
Parameter (Conditions) Temp Level Min Typ Max Min Typ Max Unit
Maximum Conversion Rate Full II 80 105 MSPS
Minimum Conversion Rate Full IV 30 MSPS
ENCODE Pulsewidth High (t
ENCH
)* Full IV 5.625 4.286 30 ns
ENCODE Pulsewidth Low (t
ENCL
)* Full IV 5.625 4.286 ns
*Several timing parameters are a function of t
ENCL
and t
ENCH
.
Specifications subject to change without notice.
(AV
CC
= 5 V, DV
CC
= 3.3 V; ENCODE, ENCODE, T
MIN
and T
MAX
at rated speed grade, unless
otherwise noted.)
(AV
CC
= 5 V, DV
CC
= 3.3 V; ENCODE, ENCODE, T
MIN
and T
MAX
at rated speed grade, unless otherwise noted.)
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