Datasheet

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DIGITAL CHARACTERISTICS
ADS5500
SBAS303F – DECEMBER 2003 – REVISED FEBRUARY 2007
ELECTRICAL CHARACTERISTICS (continued)
Typ values given at T
A
= 25 ° C, min and max specified over the full recommended operating temperature range, AVDD =
DRV
DD
= 3.3 V, sampling rate = 125 Msps, 50% clock duty cycle, DLL On, 3-V
PP
differential clock, and –1-dBFS differential
input, unless otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
25 ° C 80 85
f
IN
= 10 MHz
Full temp range 78 83
f
IN
= 30 MHz 82
f
IN
= 55 MHz 77
THD Total harmonic distortion 25 ° C 77.5 81 dBc
f
IN
= 70 MHz
Full temp range 76 79.5
f
IN
= 100 MHz 79
f
IN
= 150 MHz 75
f
IN
= 225 MHz 71.8
ENOB Effective number of bits f
IN
= 70 MHz 11.3 Bits
f = 10.1 MHz, 15.1 MHz
95
(–7 dBFS each tone)
f = 30.1 MHz, 35.1 MHz
IMD Two-tone intermodulation distortion 94 dBFS
(–7 dBFS each tone)
f = 50.1 MHz, 55.1 MHz
94
(–7 dBFS each tone)
ACPSRR AC power supply rejection ratio Supply noise frequency ≤ 100 MHz 35 dB
POWER SUPPLY
I
CC
Total supply current f
IN
= 70 MHz 236 265 mA
I
AVDD
Analog supply current f
IN
= 70 MHz 175 190 mA
f
IN
= 70 MHz, 10-pF load from
I
DRVDD
Output buffer supply current 61 75 mA
digital outputs to ground
Analog only 578 627 mW
Power dissipation
Output buffer power with 10-pF
202 248 mW
load on digital output to ground
Standby power With clocks running 181 250 mW
Valid over the full recommended operating temperature range, AV
DD
= DRV
DD
= 3.3 V, unless otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DIGITAL INPUTS
High-level input voltage 2.4 V
Low-level input voltage 0.8 V
High-level input current 10 µ A
Low-level input current –10 µ A
Input current for RESET –20 µ A
Input capacitance 4 pF
DIGITAL OUTPUTS
Low-level output voltage C
LOAD
= 10 pF 0.3 V
High-level output voltage C
LOAD
= 10 pF 2.8 3 V
Output capacitance 3 pF
5
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