ADCS7477AIMF/NOPB National Semiconductor, ADCS7477AIMF/NOPB Datasheet - Page 9

• Manufacturer Part Number: ADCS7477AIMF/NOPB
• Description: IC ADC 10BIT 1MSPS SOT-23-6
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of ADCS7477AIMF/NOPB

• Number Of Bits: 10
• Sampling Rate (per Second): 1M
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 17.5mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADCS7477AIMF; ADCS7477AIMFTR

t
t
POWER-UP
Symbol
CONVERT
Timing Test Circuit
ADCS7476/ADCS7477/ADCS7478 Timing Specifications
The following specifications apply for V
other limits T
t
Note 5: Minimum Quiet Time Required Between Bus Relinquish and Start of Next Conversion
Note 6: Measured with the load circuit shown above, and defined as the time taken by the output to cross 1.0V.
Note 7: Measured with the load circuit shown above, and defined as the time taken by the output to cross 1.0V or 2.0V.
Note 8: t
the effects of charging or discharging the 25pF capacitor. This means t
Note 9: All input signals are specified as t
QUIET
t
t
t
t
t
t
t
t
1
2
3
4
5
6
7
8
8
is derived from the time taken by the outputs to change by 0.5V with the loading circuit shown above. The measured number is then adjusted to remove
(Note
Minimum CS Pulse Width
CS to SCLK Setup Time
Delay from CS Until SDATA TRI-STATE
Disabled
Data Access Time after SCLK Falling
Edge(Note
SCLK Low Pulse Width
SCLK High Pulse Width
SCLK to Data Valid Hold Time
SCLK Falling Edge to SDATA High
Impedance
Power-Up Time from Full Power-Down
A
= 25°C, unless otherwise noted.
5)
(Note
7)
(Note
Parameter
6)
8)
r
= t
f
= 5 ns (10% to 90% V
DD
= +2.7V to 5.25V, f
(Note
V
V
V
V
V
V
DD
DD
DD
DD
DD
DD
9)
= +2.7 to +3.6
= +4.75 to +5.25
= +2.7 to +3.6
= +4.75 to +5.25
= +2.7 to +3.6
= +4.75 to +5.25
DD
8
) and timed from 1.6V.
is the true bus relinquish time, independent of the bus loading.
SCLK
9
Conditions
= 20 MHz, Boldface limits apply for T
20057708
16 x t
Typical
1
SCLK
A
0.4 x t
0.4 x t
= −40°C to +85°C: all
Limits
50
10
10
20
40
20
25
25
7
5
6
5
SCLK
SCLK
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ns (max)
ns (max)
ns (max)
ns (max)
ns (max)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
Units
µs