Datasheet

AD9627
Rev. B | Page 8 of 76
ADC AC SPECIFICATIONS—AD9627-125/AD9627-150
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 4.
Parameter
1
Temperature
AD9627-125 AD9627-150
Unit Min Typ Max Min Typ Max
SIGNAL-TO-NOISE RATIO (SNR)
f
IN
= 2.3 MHz 25°C 69.5 69.4 dB
f
IN
= 70 MHz 25°C 69.4 69.2 dB
Full 68.1 67.1 dB
f
IN
= 140 MHz 25°C 69.1 68.8 dB
f
IN
= 220 MHz 25°C 68.8 68.2 dB
SIGNAL-TO-NOISE AND DISTORTION (SINAD)
f
IN
= 2.3 MHz 25°C 69.4 69.3 dB
f
IN
= 70 MHz 25°C 69.3 69.1 dB
Full 67.9 65.9 dB
f
IN
= 140 MHz 25°C 69.0 68.7 dB
f
IN
= 220 MHz 25°C 68.3 67.8 dB
EFFECTIVE NUMBER OF BITS (ENOB)
f
IN
= 2.3 MHz 25°C 11.4 11.4 Bits
f
IN
= 70 MHz 25°C 11.4 11.4 Bits
f
IN
= 140 MHz 25°C 11.3 11.3 Bits
f
IN
= 220 MHz 25°C 11.3 11.2 Bits
WORST SECOND OR THIRD HARMONIC
f
IN
= 2.3 MHz 25°C −86.5 −86.5 dBc
f
IN
= 70 MHz 25°C −85 −84 dBc
Full −74 −73 dBc
f
IN
= 140 MHz 25°C −84 −83.5 dBc
f
IN
= 220 MHz 25°C −83 −77 dBc
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
f
IN
= 2.3 MHz 25°C 86.5 86.5 dBc
f
IN
= 70 MHz 25°C 85 84 dBc
Full 74 73 dBc
f
IN
= 140 MHz 25°C 84 83.5 dBc
f
IN
= 220 MHz 25°C 83 77 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 −81 −80 dBc
f
IN
= 140 MHz 25°C −89 −88 dBc
f
IN
= 220 MHz 25°C −89 −88 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.