Datasheet

ADCS7476, ADCS7477, ADCS7478
SNAS192F –APRIL 2003–REVISED MARCH 2013 www.ti.com
ADCS7476/ADCS7477/ADCS7478 Specifications
(1)
ADCS7476 Converter Electrical Characteristics (continued)
The following specifications apply for V
DD
= +2.7V to 5.25V, f
SCLK
= 20 MHz, f
SAMPLE
= 1 MSPS unless otherwise noted.
Boldface limits apply for T
A
= −40°C to +85°C: all other limits T
A
= 25°C, unless otherwise noted.
Symbol Parameter Conditions Typical Limits Units
V
DD
= +4.75V to +5.25V,
2 mA
SCLK On or Off
Normal Mode (Static)
V
DD
= +2.7V to +3.6V,
1 mA
SCLK On or Off
V
DD
= +4.75V to +5.25V,
2.0 3.5 mA (max)
I
DD
f
SAMPLE
= 1 MSPS
Normal Mode (Operational)
V
DD
= +2.7V to +3.6V,
0.6 1.6 mA (max)
f
SAMPLE
= 1 MSPS
V
DD
= +5V, SCLK Off 0.5 µA
Shutdown Mode
V
DD
= +5V, SCLK On 60 µA
V
DD
= +5V, f
SAMPLE
= 1 MSPS 10 17.5 mW (max)
Power Consumption, Normal Mode
(Operational)
V
DD
= +3V, f
SAMPLE
= 1 MSPS 2 4.8 mW (max)
P
D
V
DD
= +5V, SCLK Off 2.5 µW
Power Consumption, Shutdown Mode
V
DD
= +3V, SCLK Off 1.5 µW
ANALOG INPUT CHARACTERISTICS
V
IN
Input Range 0 to V
DD
V
I
DCL
DC Leakage Current ±1 µA (max)
C
INA
Analog Input Capacitance 30 pF
DIGITAL INPUT CHARACTERISTICS
V
IH
Input High Voltage 2.4 V (min)
V
DD
= +5V 0.8 V (max)
V
IL
Input Low Voltage
V
DD
= +3V 0.4 V (max)
I
IN
Input Current V
IN
= 0V or V
DD
±10 nA ±1 µA (max)
C
IND
Digital Input Capacitance 2 4 pF (max)
DIGITAL OUTPUT CHARACTERISTICS
I
SOURCE
= 200 µA,
V
OH
Output High Voltage V
DD
−0.2 V (min)
V
DD
= +2.7V to +5.25V
V
OL
Output Low Voltage I
SINK
= 200 µA 0.4 V (max)
I
OL
TRI-STATE Leakage Current ±10 µA (max)
C
OUT
TRI-STATE Output Capacitance 2 4 pF (max)
Output Coding Straight (Natural) Binary
AC ELECTRICAL CHARACTERISTICS
f
SCLK
Clock Frequency −40°C ≤ T
A
≤ 125°C 20 MHz (max)
40 % (min)
DC SCLK Duty Cycle
60 % (max)
t
TH
Track/Hold Acquisition Time 400 ns (max)
f
RATE
Throughput Rate See USING THE ADCS7476/77/78 1 MSPS (max)
t
AD
Aperture Delay 3 ns
t
AJ
Aperture Jitter 30 ps
ADCS7476/ADCS7477/ADCS7478 Specifications
(1)
ADCS7477 Converter Electrical
Characteristics
The following specifications apply for V
DD
= +2.7V to 5.25V, f
SCLK
= 20 MHz, f
SAMPLE
= 1 MSPS unless otherwise noted.
Boldface limits apply for T
A
= −40°C to +85°C: all other limits T
A
= 25°C, unless otherwise noted.
Symbol Parameter Conditions Typical Limits Units
STATIC CONVERTER CHARACTERISTICS
(1) Data sheet min/max specification limits are ensured by design, test, or statistical analysis.
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