
Data Sheet
AD1939
Rev. E | Page 7 of 32
Parameter
Condition
Comments
Min
Max
Unit
SPI PORT
tCCH
CCLK high
35
ns
tCCL
CCLK low
35
ns
fCCLK
CCLK frequency
10
MHz
tCDS
CIN setup
To CCLK rising
10
ns
tCDH
CIN hold
From CCLK rising
10
ns
tCLS
CLATCH setup
To CCLK rising
10
ns
tCLH
CLATCH hold
From CCLK falling
10
ns
tCLHIGH
CLATCH high
10
ns
tCOE
COUT enable
From CCLK falling
30
ns
tCOD
COUT delay
From CCLK falling
30
ns
tCOH
COUT hold
30
ns
tCOTS
COUT tristate
From CCLK falling
30
ns
DAC SERIAL PORT
tDBH
DBCLK high
Slave mode
10
ns
tDBL
DBCLK low
Slave mode
10
ns
tDLS
DLRCLK setup
To DBCLK rising, slave mode
10
ns
tDLH
DLRCLK hold
From DBCLK rising, slave mode
5
ns
tDLS
DLRCLK skew
From DBCLK falling, master mode
8
+8
ns
tDDS
DSDATA setup
To DBCLK rising
10
ns
tDDH
DSDATA hold
From DBCLK rising
5
ns
ADC SERIAL PORT
tABH
ABCLK high
Slave mode
10
ns
tABL
ABCLK low
Slave mode
10
ns
tALS
ALRCLK setup
To ABCLK rising, slave mode
10
ns
tALH
ALRCLK hold
From ABCLK rising, slave mode
5
ns
tALS
ALRCLK skew
From ABCLK falling, master mode
8
+8
ns
tABDD
ASDATA delay
From ABCLK falling
18
ns
AUXILIARY INTERFACE
tAXDS
AAUXDATA setup
To AUXBCLK rising
10
ns
tAXDH
AAUXDATA hold
From AUXBCLK rising
5
ns
tDXDD
DAUXDATA delay
From AUXBCLK falling
18
ns
tXBH
AUXBCLK high
10
ns
tXBL
AUXBCLK low
10
ns
tDLS
AUXLRCLK setup
To AUXBCLK rising
10
ns
tDLH
AUXLRCLK hold
From AUXBCLK rising
5
ns