Datasheet
ADC141S626
www.ti.com
SNAS434B –NOVEMBER 2007–REVISED MARCH 2013
ADC141S626 Converter Electrical Characteristics
(1)
(continued)
The following specifications apply for V
A
= V
IO
= V
REF
= +2.7V to 5.5V and f
SCLK
= 0.9 to 3.6 MHz or V
A
= V
IO
= V
REF
= +4.5V
to 5.5V and f
SCLK
= 3.6 to 4.5 MHz; f
IN
= 20 kHz and C
L
= 25 pF, unless otherwise noted. Boldface limits apply for T
A
= T
MIN
to T
MAX
; all other limits are at T
A
= 25°C.
Symbol Parameter Conditions Typical Limits Units
POWER SUPPLY CHARACTERISTICS
2.7 V (min)
V
A
Analog Supply Voltage Range
5.5 V (max)
2.7 V (min)
V
IO
Digital Input/Output Supply Voltage Range See
(2)
5.5 V (max)
1.0 V (min)
V
REF
Reference Voltage Range
V
A
V (max)
f
SCLK
= 3.6 MHz, V
A
= 3V, f
S
= 200
540 760 µA (max)
kSPS, f
IN
= 20 kHz
I
VA
Analog Supply Current, Conversion Mode
(Conv)
f
SCLK
= 4.5 MHz, V
A
= 5V, f
S
= 250
740 970 µA (max)
kSPS, f
IN
= 20 kHz
f
SCLK
= 3.6 MHz, V
A
= 3V, f
S
= 200
90 190 µA (max)
kSPS, f
IN
= 20 kHz
I
VIO
Digital I/O Supply Current, Conversion
(Conv) Mode
f
SCLK
= 4.5 MHz, V
A
= 5V, f
S
= 250
170 260 µA (max)
kSPS, f
IN
= 20 kHz
f
SCLK
= 3.6 MHz, V
A
= 3V, f
S
= 200
25 60 µA (max)
kSPS, f
IN
= 20 kHz
I
VREF
Reference Current, Conversion Mode
(Conv)
f
SCLK
= 4.5 MHz, V
A
= 5V, f
S
= 250
45 80 µA (max)
kSPS, f
IN
= 20 kHz
f
SCLK
= 4.5 MHz, V
A
= 5V 8 µA
Analog Supply Current, Power Down
I
VA
(PD)
Mode (CS high)
f
SCLK
= 0
(3)
2 3 µA (max)
f
SCLK
= 4.5 MHz, V
A
= 5V 3 µA
Digital I/O Supply Current, Power Down
I
VIO
(PD)
Mode (CS high)
f
SCLK
= 0
(3)
0.1 0.3 µA (max)
f
SCLK
= 4.5 MHz, V
A
= 5V 0.1 µA
I
VREF
Reference Current, Power Down Mode
(PD) (CS high)
f
SCLK
= 0
(3)
0.1 0.2 µA (max)
f
SCLK
= 3.6 MHz, f
S
= 200 kSPS, f
IN
= 20
2.0 3.0 mW
kHz, V
A
= V
IO
= V
REF
= 3.0V
PWR
Power Consumption, Conversion Mode
(Conv)
f
SCLK
= 4.5 MHz, f
S
= 250 kSPS, f
IN
= 20
4.8 6.5 mW
kHz, V
A
= V
IO
= V
REF
= 5.0V
f
SCLK
= 0, V
A
= V
IO
= V
REF
= 3.0V
(3)
3 4 µW (max)
PWR Power Consumption, Power Down Mode
(PD) (CS high)
f
SCLK
= 0, V
A
= V
IO
= V
REF
= 5.0V
(3)
13 17 µW (max)
See the Specification Definitions for the
PSRR Power Supply Rejection Ratio −85 dB
test condition.
AC ELECTRICAL CHARACTERISTICS
f
SCLK
Maximum Clock Frequency V
A
= V
IO
= V
REF
= +2.7V to 5.5V 4.8 4.5 MHz (min)
f
SCLK
Minimum Clock Frequency 0.9 MHz (max)
f
S
Maximum Sample Rate
(4)
250 kSPS (min)
t
ACQ
Acquisition/Track Time 667 ns (min)
t
CONV
Conversion/Hold Time 15 SCLK cycles
t
AD
Aperture Delay See the Specification Definitions. 6 ns
(2) The value of V
IO
is independent of the value of V
A
. For example, V
IO
could be operating at 5V while V
A
is operating at 3V or V
IO
could
be operating at 3V while V
A
is operating at 5V.
(3) This parameter is guaranteed by design and/or characterization and is not tested in production.
(4) While the maximum sample rate is f
SCLK
/18, the actual sample rate may be lower than this by having the CS rate slower than f
SCLK
/18.
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