Datasheet

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ELECTRICAL CHARACTERISTICS
ADS5500
SBAS303F – DECEMBER 2003 – REVISED FEBRUARY 2007
RECOMMENDED OPERATING CONDITIONS (continued)
MIN NOM MAX UNIT
Clock duty cycle (see Figure 49 for more information) 50%
0 70
Open free-air temperature range ° C
–40 85
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
Resolution 14 Bits
ANALOG INPUTS
Differential input range 2.3 V
PP
Differential input impedance See Figure 41 6.6 Ω
Differential input capacitance See Figure 41 4 pF
Analog input common-mode current (per
300 µ A
input)
Analog input bandwidth Source impedance = 50 Ω 750 MHz
Clock
Voltage overload recovery time 4
Cycles
INTERNAL REFERENCE VOLTAGES
V
REFM
Reference bottom voltage 0.97 V
V
REFP
Reference top voltage 2.11 V
Reference error – 4% ± 0.9% 4%
V
CM
Common-mode voltage output 1.55 ± 0.05 V
DYNAMIC DC CHARACTERISTICS AND ACCURACY
No missing codes Tested
DNL Differential linearity error f
IN
= 10 MHz –0.9 ± 0.75 1.1 LSB
INL Integral linearity error f
IN
= 10 MHz –5 ± 2.5 5 LSB
Offset error –11 ± 1.5 11 mV
Offset temperature coefficient 0.02 mV/ ° C
∆ offset error/ ∆ AV
DD
from AV
DD
= 3
DC power supply rejection ratio, DC PSRR 0.25 mV/V
V to AV
DD
= 3.6 V
Gain error
(1)
–2 ± 0.45 2 %FS
Gain temperature coefficient 0.01 ∆ %/ ° C
DYNAMIC AC CHARACTERISTICS
25 ° C to T
MAX
71.5 73.2
f
IN
= 10 MHz
Full temp range 70.5 72.8
f
IN
= 30 MHz 72.7
f
IN
= 55 MHz 71.9
SNR Signal-to-noise ratio 25 ° C to T
MAX
70.8 72.3 dBFS
f
IN
= 70 MHz
Full temp range 69.8 72
f
IN
= 100 MHz 71.2
f
IN
= 150 MHz 70.1
f
IN
= 225 MHz 69.1
RMS output noise Input tied to common-mode 1.1 LSB
(1) Gain error is specified by design and characterization; it is not tested in production.
3
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