Datasheet
ADS8365
www.ti.com
.................................................................................................................................................... SBAS362C – AUGUST 2006 – REVISED MARCH 2008
ELECTRICAL CHARACTERISTICS: 250kSPS (continued)
Over recommended operating free-air temperature range at – 40 ° C to +85 ° C, AV
DD
= 5V, BV
DD
= 3V, V
REF
= internal +2.5V, f
CLK
= 5MHz, and
f
SAMPLE
= 250kSPS, unless otherwise noted
ADS8365
PARAMETER TEST CONDITIONS MIN TYP
(1)
MAX UNIT
VOLTAGE REFERENCE OUTPUT
Reference voltage output V
OUT
2.475 2.5 2.525 V
Initial accuracy ± 1 %
Output voltage temperature drift dV
OUT
/dT ± 20 ppm/ ° C
f = 0.1Hz to 10Hz, C
L
= 10 µ F 40 µ V
PP
Output voltage noise
f = 10Hz to 10kHz, C
L
= 10 µ F 8 µ Vrms
Power-supply rejection ratio PSRR 60 dB
Output impedance R
OUT
2 k Ω
Short-circuit current I
SC
1.25 mA
Turn-on settling time to 0.1% at C
L
= 0pF 100 µ s
VOLTAGE REFERENCE INPUT
Reference voltage input V
IN
1.5 2.5 2.6 V
Reference input resistance 100 M Ω
Reference input capacitance 5 pF
Reference input current 1 µA
DIGITAL INPUTS
(2)
Logic family CMOS
High-level input voltage V
IH
0.7 × BV
DD
BV
DD
+ 0.3 V
Low-level input voltage V
IL
– 0.3 0.3 × BV
DD
V
Input current I
IN
V
I
= BV
DD
or GND ± 50 nA
Input capacitance C
I
5 pF
DIGITAL OUTPUTS
(2)
Logic family CMOS
High-level output voltage V
OH
BV
DD
= 4.5V, I
OH
= – 100 µ A 4.44 V
Low-level output voltage V
OL
BV
DD
= 4.5V, I
OL
= 100 µ A 0.5 V
High-impedance state output current I
OZ
CS = BV
DD
, V
I
= BV
DD
or GND ± 50 nA
Output capacitance C
O
5 pF
Load capacitance C
L
30 pF
DIGITAL INPUTS
(3)
Logic family LVCMOS
High-level input voltage V
IH
BV
DD
= 3.6V 2 BV
DD
+ 0.3 V
Low-level input voltage V
IL
BV
DD
= 2.7V – 0.3 0.8 V
Input current I
IN
V
I
= BV
DD
or GND ± 50 nA
Input capacitance C
I
5 pF
DIGITAL OUTPUTS
(3)
Logic family LVCMOS
High-level output voltage V
OH
BV
DD
= 2.7V, I
OH
= – 100 µ A BVDD – 0.2 V
Low-level output voltage V
OL
BV
DD
= 2.7V, I
OL
= 100 µ A 0.2 V
High-impedance state output current I
OZ
CS = BV
DD
, V
I
= BV
DD
or GND ± 50 nA
Output capacitance C
O
5 pF
Load capacitance C
L
30 pF
(2) Applies for 5.0V nominal supply: BV
DD
(min) = 4.5V and BV
DD
(max) = 5.5V.
(3) Applies for 3.0V nominal supply: BV
DD
(min) = 2.7V and BV
DD
(max) = 3.6V.
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