Datasheet

AD9627
Rev. B | Page 7 of 76
ADC AC SPECIFICATIONS—AD9627-80/AD9627-105
AVDD = 1.8 V, DVDD = 1.8 V, DRVDD = 3.3 V, maximum sample rate, VIN = −1.0 dBFS differential input, 1.0 V internal reference, DCS
enabled, fast detect output pins disabled, and signal monitor disabled, unless otherwise noted.
Table 3.
Parameter
1
Temperature
AD9627-80 AD9627-105
Unit Min Typ Max Min Typ Max
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 2.3 MHz 25°C 69.7 69.6 dB
f
IN
= 70 MHz 25°C 69.5 69.4 dB
Full 68.1 68.6 dB
f
IN
= 140 MHz 25°C 69.2 69.1 dB
f
IN
= 220 MHz 25°C 68.5 68.4 dB
SIGNAL-TO-NOISE AND DISTORTION (SINAD)
f
IN
= 2.3 MHz 25°C 69.6 69.5 dB
f
IN
= 70 MHz 25°C 69.4 69.3 dB
Full 67.4 68.0 dB
f
IN
= 140 MHz 25°C 69.0 69.0 dB
f
IN
= 220 MHz 25°C 68.3 68.1 dB
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 2.3 MHz 25°C 11.5 11.4 Bits
f
IN
= 70 MHz 25°C 11.4 11.4 Bits
f
IN
= 140 MHz 25°C 11.4 11.4 Bits
f
IN
= 220 MHz 25°C 11.3 11.2 Bits
WORST SECOND OR THIRD HARMONIC
f
IN
= 2.3 MHz 25°C −87 −87 dBc
f
IN
= 70 MHz 25°C −85 −85 dBc
Full −74 −74 dBc
f
IN
= 140 MHz 25°C −84 −84 dBc
f
IN
= 220 MHz 25°C −83 −83 dBc
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 2.3 MHz 25°C 87 87 dBc
f
IN
= 70 MHz 25°C 85 85 dBc
Full 74 74 dBc
f
IN
= 140 MHz 25°C 84 84 dBc
f
IN
= 220 MHz 25°C 83 83 dBc
WORST OTHER HARMONIC OR SPUR
f
IN
= 2.3 MHz 25°C −92 −92 dBc
f
IN
= 70 MHz 25°C −89 −88 dBc
Full −82 −82 dBc
f
IN
= 140 MHz 25°C −89 −87 dBc
f
IN
= 220 MHz 25°C −89 −86 dBc
TWO-TONE SFDR
f
IN
= 29.1 MHz, 32.1 MHz (−7 dBFS ) 25°C 85 85 dBc
f
IN
= 169.1 MHz, 172.1 MHz (−7 dBFS ) 25°C 82 82 dBc
CROSSTALK
2
Full −95 −95 dB
ANALOG INPUT BANDWIDTH 25°C 650 650 MHz
1
See Application Note AN-835, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions.
2
Crosstalk is measured at 100 MHz with −1 dBFS on one channel and with no input on the alternate channel.