AD7892AR-3 Analog Devices Inc, AD7892AR-3 Datasheet - Page 4

• Manufacturer Part Number: AD7892AR-3
• Description: IC ADC 12BIT LP 600KSPS 24-SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD7892AR-3

• Rohs Status: RoHS non-compliant
• Number Of Bits: 12
• Sampling Rate (per Second): 600k
• Data Interface: Serial, Parallel
• Number Of Converters: 1
• Power Dissipation (max): 90mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (0.300", 7.50mm Width)

AD7892
TIMING CHARACTERISTICS
Parameter
t
t
Parallel Interface
t
t
t
t
t
t
t
t
t
Serial Interface
t
t
t
t
t
t
t
t
t
NOTES
1
2
3
4
5
Specifications subject to change without notice.
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 AD7892 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.
Sample tested at +25°C to ensure compliance. All input signals are measured with tr = tf = 1 ns (10% to 90% of +5 V) and timed from a voltage level of +1.6 V.
See Figures 2 and 3.
Measured with the load circuit of Figure 1 and defined as the time required for an output to cross 0.8 V or 2.4 V.
These times 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
Assumes CMOS loads on the data bits. With TTL loads, more current is drawn from the data lines and the RD to CONVST time needs to be extended to 400 ns min.
CONV
ACQ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
17A
extrapolated back to remove the effects of charging or discharging the 50 pF capacitor. This means that the times quoted in the timing characteristics are the true bus
relinquish times of the part and as such are independent of external bus loading capacitances.
3
4
3
3
3
4
4
A, B
Versions
1.47
1.6
200
400
35
60
0
0
35
35
5
30
0
200
30
25
25
25
5
25
20
0
30
0
30
1, 2
(V
DD
S
Version
1.68
320
45
60
0
0
45
40
5
40
0
200
35
30
25
25
5
30
30
0
30
0
30
= +5 V
TO
OUTPUT
PIN
50pF
5%, AGND = DGND = 0 V, REF IN = +2.5 V)
Unit
µs max
µs max
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns max
ns min
ns max
ns min
ns min
ns min
ns max
ns min
ns min
ns min
ns max
ns min
ns min
ns max
ns min
ns max
1.6mA
200 A
+1.6V
Test Conditions/Comments
Conversion Time for AD7892-3
Conversion Time for AD7892-1, AD7892-2
Acquisition Time for AD7892-3
Acquisition Time for AD7892-1, AD7892-2
CONVST Pulsewidth
EOC Pulsewidth
EOC Falling Edge to CS Falling Edge Setup Time
CS to RD Setup Time
Read Pulsewidth
Data Access Time After Falling Edge of RD
Bus Relinquish Time After Rising Edge of RD
CS to RD Hold Time
RD to CONVST Setup Time
RFS Low to SCLK Falling Edge Setup Time
RFS Low to Data Valid Delay
SCLK High Pulsewidth
SCLK Low Pulsewidth
SCLK Rising Edge to Data Valid Hold Time
SCLK Rising Edge to Data Valid Delay
RFS to SCLK Falling Edge Hold Time
Bus Relinquish Time after Rising Edge of RFS
Bus Relinquish Time after Rising Edge of SCLK
WARNING!
ESD SENSITIVE DEVICE