AD9834 Analog Devices, AD9834 Datasheet - Page 3

• Manufacturer Part Number: AD9834
• Description: +2.5V to +5.5V, 50MHz, Low Power (25mW) Complete DDS With on Board Comparator in 20-pin Tssop Package
• Manufacturer: Analog Devices

TIMING CHARACTERISTICS
Parameter
t
t
t
t
t
t
t
t
t
t
t
t
1
*See Pin Description Section.
1
2
3
4
5
6
7
8
9
10
11
11A
Guaranteed by design, not production tested.
REV PrL
*
Limit at T
20
8
8
25
10
10
5
10
t
5
3
8
8
4
- 5
Figure 2. Master Clock
FSYNC
SDATA
SCLK
MCLK
MIN
100nF
PRELIMINARY TECHNICAL DATA
t
2
to T
t
1
t
3
Figure 1. Test Circuit With which Specifications are tested.
MAX
REGULATOR
1
t
7
(V
D15
CAP/2.5V
DD
= +2.3 V to +5.5 V; AGND = DGND = 0 V, unless otherwise noted)
Units
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns max
ns min
ns min
ns min
ns min
D14
t
REFERENCE
12
6
ON-BOARD
t
5
ROM
Figure 4. Serial Timing
10nF
REFOUT
SIN
Test Conditions/Comments
MCLK Period
MCLK High Duration
MCLK Low Duration
SCLK Period
SCLK High Duration
SCLK Low Duration
FSYNC to SCLK Falling Edge Setup Time
FSYNC to SCLK Hold Time
Data Setup Time
Data Hold Time
FSELECT, PSELECT Setup Time Before MCLK Rising Edge
FSELECT, PSELECT Setup Time After MCLK Rising Edge
FSELECT,
PSELECT
t
4
MCLK
FULL-SCALE
–3–
D2
CONTROL
10-BIT DAC
AD9834
VALID DATA
FS
ADJUST
t
9
R
6.8 K
D1
SET
t
10
COMP
IOUT
Figure 3. Control Timing
D0
t
11
t
AVDD
8
VALID DATA
200R
10nF
20pF
t
11A
VALID DATA
D15
D14
AD9834