AD7879 View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
AD7879 Datasheet PDF : 40 Pages
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AD7879/AD7889
Data Sheet
Parameter
POWER REQUIREMENTS
VCC
ICC
Converting Mode
Static
Shutdown Mode
Min
Typ
Max
Unit
Test Conditions/Comments
1.6
2.6
3.6
V
Specified performance
Digital inputs = 0 V or VCC
480
650
μA
ADC on, PM = 10
406
μA
ADC and temperature sensor are off; the ref-
erence and oscillator are on; PM = 01 or 11
0.5
6
μA
PM = 00
1 See the Terminology section.
2 Guaranteed by characterization; not production tested.
3 Sample tested at 25°C to ensure compliance.
SPI TIMING SPECIFICATIONS (AD7879/AD7889)
VCC = 1.6 V to 3.6 V, TA = −40°C to +85°C, unless otherwise noted. Sample tested at 25°C to ensure compliance. All input signals are
specified with tR = tF = 5 ns (10% to 90% of VCC) and timed from a voltage level of 1.4 V.
Table 2.
Parameter1
fSCL
t1
t2
t3
t4
t5
t6
t7
t8
Limit
5
5
20
20
15
15
20
16
15
Unit
MHz max
ns min
ns min
ns min
ns min
ns min
ns max
ns max
ns min
Description
CS falling edge to first SCL falling edge
SCL high pulse width
SCL low pulse width
DIN setup time
DIN hold time
DOUT access time after SCL falling edge
CS rising edge to DOUT high impedance
SCL rising edge to CS high
1 Guaranteed by design; not production tested.
CS
SCL
DIN
DOUT
t1
t2
1
t4
t5
MSB
t3
2
3
15
16
1
t8
2
15
16
LSB
t6
MSB
Figure 2. Detailed SPI Timing Diagram
t7
LSB
Rev. D | Page 4 of 40
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