EVAL-AD7866CB AD [Analog Devices], EVAL-AD7866CB Datasheet - Page 4

• Manufacturer Part Number: EVAL-AD7866CB
• Description: Dual 1 MSPS, 12-Bit, 2-Channel SAR ADC with Serial Interface
• Manufacturer: AD [Analog Devices]

AD7866
TIMING SPECIFICATIONS
Parameter
f
t
t
t
t
t
t
t
t
t
t
NOTES
1
2
3
4
ABSOLUTE MAXIMUM RATINGS
(T
AV
DV
V
V
AV
AGND to DGND . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
Analog Input Voltage to AGND . . . . –0.3 V to AV
Digital Input Voltage to DGND . . . . . . . . . . . –0.3 V to +7 V
V
Digital Output Voltage to DGND . . –0.3 V to V
Input Current to Any Pin Except Supplies
Operating Temperature Range
Commercial (A, B Versions) . . . . . . . . . . . . . –40
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the AD7866 features proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
SCLK
CONVERT
QUIET
2
3
4
5
6
7
8
9
Sample tested at 25°C to ensure compliance. All input signals are specified with tr = tf = 5 ns (10% to 90% of V
Mark/Space ratio for the CLK input is 40/60 to 60/40.
Measured with the load circuit of Figure 1 and defined as the time required for the output to cross 0.8 V or 2.0 V.
t
back to remove the effects of charging or discharging the 50 pF capacitor. This means that the times t
relinquish times of the part and are independent of the bus loading.
Specifications subject to change without notice.
8,
3
3
4
4
DRIVE
DRIVE
REF
A
t
DD
DD
9
= 25
DD
are derived from the measured time taken by the data outputs to change 0.5 V when loaded with the circuit of Figure 1. The measured number is then extrapolated
to AGND . . . . . . . . . . . . . . . . . –0.3 V to AV
2
to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
to DV
to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
o
to DGND . . . . . . . . . . . . . . . –0.3 V to DV
to AGND . . . . . . . . . . . . . . . . –0.3 V to AV
C unless otherwise noted)
DD
. . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
Limit at
T
10
20
16 × t
800
50
10
25
40
0.4 t
0.4 t
10
25
10
50
MIN
SCLK
SCLK
, T
SCLK
MAX
Unit
kHz min
MHz max
ns max
ns max
ns max
ns min
ns max
ns max
ns min
ns min
ns min
ns max
ns min
ns max
1
1
(V
DD
2
= 2.7 V to 5.25 V, V
. . . . . . . . ± 10 mA
OUTPUT
PIN
TO
DRIVE
o
C to +85
Description
t
f
Minimum Time Between End of Serial Read and Next Falling Edge of CS
CS to SCLK Setup Time
Delay from CS Until D
Data Access Time After SCLK Falling Edge. V
V
SCLK Low Pulsewidth
SCLK High Pulsewidth
SCLK to Data Valid Hold Time
CS Rising Edge to D
SCLK Falling Edge to D
SCLK Falling Edge to D
SCLK
SCLK
DD
DD
DD
DD
DRIVE
50pF
C
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
L
= 20 MHz
= 1/f
< 3 V, C
200 A
200 A
o
DRIVE
C
SCLK
= 2.7 V to 5.25 V, V
L
Storage Temperature Range . . . . . . . . . . . . –65
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150
TSSOP Package, Power Dissipation . . . . . . . . . . . . . 450 mW
ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 kV
NOTES
1
2
I
I
OL
OH
Lead Temperature, Soldering
Stresses above those listed under Absolute Maximum Ratings may cause permanent
damage to the device. This is a stress rating only; functional operation of the device
at these or any other conditions above those listed in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Transient currents of up to 100 mA will not cause SCR latch up.
= 25 pF
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
JA
JC
OUT
Thermal Impedance . . . . . . . . . . . . 143°C/W (TSSOP)
Thermal Impedance . . . . . . . . . . . . . 45°C/W (TSSOP)
OUT
A, D
OUT
OUT
A and D
1.6V
A, D
A, D
OUT
8
REF
and t
B, High Impedance
= 2.5 V; T
OUT
OUT
9
OUT
quoted in the timing characteristics are the true bus
B, High Impedance
B, High Impedance
DRIVE
B Three-State Disabled
A
) and timed from a voltage level of 1.6 V.
= T
MIN
DRIVE
to T
WARNING!
MAX
, unless otherwise noted.)
3 V, C
ESD SENSITIVE DEVICE
L
= 50 pF;
o
C to +150
o
o
C
C