Datasheet
6
ADC081S021
SNAS308G –APRIL 2005–REVISED MAY 2016
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Electrical Characteristics (continued)
Typical values correspond to T
A
= 25°C, and minimum and maximum limits apply over –40°C to 85°C operating temperature
range (unless otherwise noted). V
A
= 2.7 V to 5.25 V, f
SCLK
= 1 MHz to 4 MHz, f
SAMPLE
= 50 ksps to 200 ksps, and C
L
= 15 pF
(unless otherwise noted).
(1)
PARAMETER TEST CONDITIONS MIN
(2)
TYP MAX
(2)
UNIT
(3) This is the frequency range over which the electrical performance is ensured. The device is functional over a wider range which is
specified under Operating Ratings.
(4) Minimum quiet time required by bus relinquish and the start of the next conversion.
FPBW –3 dB full power bandwidth
V
A
= 5 V 11 MHz
V
A
= 3 V 8 MHz
ANALOG INPUT CHARACTERISTICS
V
IN
Input range 0 to V
A
V
I
DCL
DC leakage current ±1 µA
C
INA
Input capacitance
Track mode 30 pF
Hold mode 4 pF
DIGITAL INPUT CHARACTERISTICS
V
IH
Input high voltage
V
A
= 5.25 V 2.4 V
V
A
= 3.6 V 2.1 V
V
IL
Input low voltage
V
A
= 5 V 0.8 V
V
A
= 3 V 0.4 V
I
IN
Input current V
IN
= 0 V or V
A
±0.1 ±1 µA
C
IND
Digital input capacitance 2 4 pF
DIGITAL OUTPUT CHARACTERISTICS
V
OH
Output high voltage
I
SOURCE
= 200 µA V
A
– 0.2 V
A
– 0.07 V
I
SOURCE
= 1 mA V
A
– 0.1 V
V
OL
Output low voltage
I
SINK
= 200 µA 0.03 0.4 V
I
SINK
= 1 mA 0.1 V
I
OZH
, I
OZL
TRI-STATE leakage current ±0.1 ±10 µA
C
OUT
TRI-STATE output capacitance 2 4 pF
Output coding Straight (natural) binary
POWER SUPPLY CHARACTERISTICS
V
A
Supply voltage 2.7 5.25 V
I
A
Supply current, normal mode
(operational, CS low)
V
A
= 5.25 V, f
SAMPLE
= 200 ksps 1.47 2.2 mA
V
A
= 3.6 V, f
SAMPLE
= 200 ksps 0.36 0.9 mA
Supply current, shutdown
(CS high)
f
SCLK
= 0 MHz, V
A
= 5.25 V, f
SAMPLE
= 0 ksps 500 nA
V
A
= 5.25 V, f
SCLK
= 4 MHz, f
SAMPLE
= 0 ksps 60 µA
P
D
Power consumption, normal
mode
(operational, CS low)
V
A
= 5.25 V 7.7 11.6 mW
V
A
= 3.6 V 1.3 3.24 mW
Power consumption, shutdown
(CS high)
f
SCLK
= 0 MHz, V
A
= 5.25 V, f
SAMPLE
= 0 ksps 2.6 µW
f
SCLK
= 4 MHz, V
A
= 5.25 V, f
SAMPLE
= 0 ksps 315 µW
AC ELECTRICAL CHARACTERISTICS
f
SCLK
Clock frequency See
(3)
1 4 MHz
f
S
Sample rate See
(3)
50 200 ksps
t
HOLD
Hold time, falling edge 13 SCLK
DC SCLK duty cycle f
SCLK
= 4 MHz 40% 50% 60%
t
ACQ
Minimum time required for
acquisition
350 ns
t
QUIET
Quiet time See
(4)
50 ns
t
AD
Aperture delay 3 ns
t
AJ
Aperture jitter 30 ps