Datasheet

ADC084S021
www.ti.com SNAS279E –APRIL 2005–REVISED MARCH 2013
ADC084S021 Converter Electrical Characteristics
(1)
(continued)
The following specifications apply for V
A
= +2.7V to 5.25V, GND = 0V, f
SCLK
= 0.8 MHz to 3.2 MHz, f
SAMPLE
= 50 ksps to 200
ksps, C
L
= 50 pF, unless otherwise noted. Boldface limits apply for T
A
= T
MIN
to T
MAX
: all other limits T
A
= 25°C.
Symbol Parameter Conditions Typical Limits
(2)
Units
POWER SUPPLY CHARACTERISTICS (C
L
= 10 pF)
2.7 V (min)
V
A
Supply Voltage
5.25 V (max)
V
A
= +5.25V,
1.1 1.7 mA (max)
f
SAMPLE
= 200 ksps, f
IN
= 40 kHz
Supply Current, Normal Mode
(Operational, CS low)
V
A
= +3.6V,
0.45 0.8 mA (max)
f
SAMPLE
= 200 ksps, f
IN
= 40 kHz
I
A
V
A
= +5.25V,
200 nA
f
SAMPLE
= 0 ksps
Supply Current, Shutdown (CS high)
V
A
= +3.6V,
200 nA
f
SAMPLE
= 0 ksps
V
A
= +5.25V 5.8 8.9 mW (max)
Power Consumption, Normal Mode
(Operational, CS low)
V
A
= +3.6V 1.6 2.9 mW (max)
P
D
V
A
= +5.25V 1.05 µW
Power Consumption, Shutdown (CS
high)
V
A
= +3.6V 0.72 µW
AC ELECTRICAL CHARACTERISTICS
0.8 MHz (min)
f
SCLK
Clock Frequency
(3)
3.2 MHz (max)
50 ksps (min)
f
S
Sample Rate
(3)
200 ksps (max)
t
CONV
Conversion Time 13 SCLK cycles
30 % (min)
DC SCLK Duty Cycle f
SCLK
= 3.2 MHz 50
70 % (max)
t
ACQ
Track/Hold Acquisition Time Full-Scale Step Input 3 SCLK cycles
Throughput Time Acquisition Time + Conversion Time 16 SCLK cycles
(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.
Copyright © 2005–2013, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: ADC084S021