Datasheet

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DIGITAL CHARACTERISTICS
ADS5542
SBAS308D – MAY 2004 – REVISED FEBRUARY 2007
ELECTRICAL CHARACTERISTICS (continued)
Typical values given at T
A
= 25 ° C, min and max specified over the full recommended operating temperature range, AV
DD
=
DRV
DD
= 3.3 V, sampling rate = 80 MSPS, 50% clock duty cycle, 3-V
PP
differential clock, and –1dBFS differential input,
unless otherwise noted
PARAMETER CONDITIONS MIN TYP MAX UNIT
25 ° C 78 90
f
IN
= 10 MHz
Full temp range 76 88
f
IN
= 55 MHz 83.4
25 ° C 78 86
Total harmonic distortion, THD f
IN
= 70 MHz dBc
Full temp range 76 84
f
IN
= 100 MHz 83.4
f
IN
= 150 MHz 81.2
f
IN
= 220 MHz 75.8
Effective number of bits, ENOB f
IN
= 70 MHz 11.9 Bits
f = 10.1 MHz, 15.1 MHz (–7dBFS each tone) 93.8
f = 50.1 MHz, 55.1 MHz (–7dBFS each tone) 92.4
Two-tone intermodulation distortion, IMD dBFS
f = 148.1 MHz, 153.1 MHz (–7dBFS each
92.6
tone)
AC power supply rejection ratio, ACPSRR Supply noise frequency ≤ 100 MHz 35 dB
Power Supply
Total supply current, I
CC
f
IN
= 70 MHz 204 230 mA
Analog supply current, IAV
DD
f
IN
= 70 MHz 165 180 mA
Output buffer supply current, IDRV
DD
f
IN
= 70 MHz 39 50 mA
Analog only 545 594
Power dissipation mW
Output buffer power with 10-pF load on
129 165
digital output to ground
Standby power With Clocks running 180 250 mW
Valid over full recommended operating temperature range, AV
DD
= DRV
DD
= 3.3 V, unless otherwise noted
PARAMETER CONDITIONS MIN TYP MAX UNIT
Digital Inputs
V
IH
High-level input voltage 2.4 V
V
IL
Low-level input voltage 0.8 V
I
IH
High-level input current 10 µ A
I
IL
Low-level input current –10 µ A
Input current for RESET –20 µ A
Input capacitance 4 pF
Digital Outputs
V
OL
Low-level output voltage C
LOAD
= 10 pF 0.3 0.4 V
V
OH
High-level output voltage C
LOAD
= 10 pF 2.4 3 V
Output capacitance 3 pF
5
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