Datasheet
ADS41B29
ADS41B49
SBAS486E – NOVEMBER 2009–REVISED JULY 2012
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ELECTRICAL CHARACTERISTICS: ADS41B29, ADS41B49
Typical values are at +25°C, AVDD = 1.8V, AVDD_BUF = 3.3V, DRVDD = 1.8V, 1.5V
PP
clock amplitude, 50% clock duty
cycle, –1dBFS differential analog input, and DDR LVDS interface, unless otherwise noted. Minimum and maximum values are
across the full temperature range: T
MIN
= –40°C to T
MAX
= +85°C, AVDD = 1.8V, AVDD_BUF = 3.3V, and DRVDD = 1.8V.
ADS41B29 ADS41B49
PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNIT
Resolution 12 14 Bits
f
IN
= 20MHz 68.4 69.7 dBFS
f
IN
= 70MHz 68.3 69.5 dBFS
SNR (signal-to-noise ratio), LVDS f
IN
= 100MHz 68.3 69.5 dBFS
f
IN
= 170MHz 65.5 68 66.5 69.1 dBFS
f
IN
= 300MHz 67.5 68.4 dBFS
f
IN
= 20MHz 68.3 69.5 dBFS
f
IN
= 70MHz 68.1 69.3 dBFS
SINAD
f
IN
= 100MHz 68.2 69.3 dBFS
(signal-to-noise and distortion ratio), LVDS
f
IN
= 170MHz 65 67.8 66 68.8 dBFS
f
IN
= 300MHz 66.5 67.4 dBFS
f
IN
= 20MHz 89 89 dBc
f
IN
= 70MHz 85 85 dBc
Spurious-free dynamic range SFDR f
IN
= 100MHz 87 87 dBc
f
IN
= 170MHz 71 82 72 82 dBc
f
IN
= 300MHz 75 75 dBc
f
IN
= 20MHz 85 85 dBc
f
IN
= 70MHz 82 82 dBc
Total harmonic distortion THD f
IN
= 100MHz 83 83 dBc
f
IN
= 170MHz 68 79.5 69 79.5 dBc
f
IN
= 300MHz 72 72 dBc
f
IN
= 20MHz 93 93 dBc
f
IN
= 70MHz 85 85 dBc
Second-harmonic distortion HD2 f
IN
= 100MHz 87 87 dBc
f
IN
= 170MHz 71 87 72 87 dBc
f
IN
= 300MHz 80 80 dBc
f
IN
= 20MHz 93 93 dBc
f
IN
= 70MHz 88 88 dBc
Third-harmonic distortion HD3 f
IN
= 100MHz 88 88 dBc
f
IN
= 170MHz 71 82 72 82 dBc
f
IN
= 300MHz 75 75 dBc
f
IN
= 20MHz 89 89 dBc
f
IN
= 70MHz 90 90 dBc
Worst spur
f
IN
= 100MHz 90 90 dBc
(other than second and third harmonics)
f
IN
= 170MHz 76 88 77.5 88 dBc
f
IN
= 300MHz 88 88 dBc
Two-tone intermodulation f
1
= 185MHz, f
2
= 190MHz,
IMD –86 –86 dBFS
distortion each tone at –7dBFS
Recovery to within 1% (of final
Clock
Input overload recovery value) for 6dB overload with sine- 1 1
cycles
wave input
For 100mV
PP
signal on AVDD
AC power-supply rejection ratio PSRR > 30 > 30 dB
supply, up to 10MHz
Effective number of bits ENOB f
IN
= 170MHz 11 11.2 LSBs
Integrated nonlinearity INL f
IN
= 170MHz ±1.5 ±3.5 ±2.5 ±5 LSBs
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