DIGITAL SPECIFICATIONS
Table 4.
Parameter
TIMING INFORMATION
Chip Enabled to Regulator
Ready
Chip Enabled to Tx Mode
TCXO Reference
XTAL
Chip Enabled to Rx Mode
TCXO Reference
XTAL
Tx-to-Rx Turnaround Time
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
/I
INH
INL
Input Capacitance, C
IN
Control Clock Input
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
CLKOUT Rise/Fall Time
CLKOUT Load
Min
Typ
50
1
2
1.2
2.2
AGC settling +
(5 × t
)
BIT
0.7 × V
DD
VDD2 − 0.4
Rev. 0 | Page 9 of 60
Max
Unit
Test Conditions/Comments
μs
CREG[1:4] = 100 nF
32-bit register write time = 50 μs
ms
Depends on VCO settling
ms
Depends on VCO settling
32-bit register write time = 50 μs, IF filter coarse
calibration only
ms
Depends on VCO settling
ms
Depends on VCO settling
ms
Time to synchronized data output; includes AGC
settling (three AGC levels) and CDR synchronization;
t
= data bit period; AFC settling not included
BIT
V
0.2 × V
V
DD
±1
μA
10
pF
50
MHz
V
I
= 500 μA
OH
0.4
V
I
= 500 μA
OL
5
ns
10
pF
ADF7021-V
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