Datenblatt-pdf.com


AD5930 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD5930
Beschreibung Programmable Frequency Sweep and Output Burst Waveform Generator
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 28 Seiten
AD5930 Datasheet, Funktion
www.DataSheet4U.com
Programmable Frequency Sweep and
Output Burst Waveform Generator
AD5930
FEATURES
Programmable frequency profile
No external components necessary
Output frequency up to 25 MHz
Burst and listen capability
Preprogrammable frequency profile minimizes number of
DSP/µcontroller writes
Sinusoidal/triangular/square wave outputs
Automatic or single pin control of frequency stepping
Waveform starts at known phase
Increments at 0° phase or phase continuously
Power-down mode: 20 µA
Power supply: 2.3 V to 5.5 V
Automotive temperature range: −40°C to +125°C
20-lead pb-free TSSOP
APPLICATIONS
Frequency sweeping/radar
Network/impedance measurements
Incremental frequency stimulus
Sensory applications
Proximity and motion
BFSK
Frequency bursting/pulse trains
GENERAL DESCRIPTION
The AD59301 is a waveform generator with programmable
frequency sweep and output burst capability. Utilizing
embedded digital processing that allows enhanced frequency
control, the device generates synthesized analog or digital
frequency-stepped waveforms. Because frequency profiles
are preprogrammed, continuous write cycles are eliminated
and thereby free up valuable DSP/µcontroller resources.
Waveforms start from a known phase and are incremented
phase continuously, which allows phase shifts to be easily
determined. Consuming only 8 mA, the AD5930 provides a
convenient low power solution to waveform generation.
The AD5930 can be operated in a variety of modes. In
continuous output mode, the device outputs the required
frequency for a defined length of time and then steps to the
next frequency. The length of time the device outputs a
particular frequency is either preprogrammed and the device
increments the frequency automatically, or, alternatively, is
incremented externally via the CTRL pin. In burst mode, the
device outputs its frequency for a length of time and then
returns to midscale for a further predefined length of time
before stepping to the next frequency. When the MSBOUT pin
is enabled, a digital output is generated.
(continued on Page 3)
FUNCTIONAL BLOCK DIAGRAM
INTERRUPT STANDBY
DVDD CAP/2.5V DGND AGND AVDD
MCLK
CTRL
AD5930
REGULATOR
OUTPUT BURST
CONTROLLER
VCC
2.5V
SYNC
BUFFER
DATA
SYNC
INCREMENT
CONTROLLER
DATA
INCR
FREQUENCY
CONTROLLER
24
24-BIT
PIPELINED
DDS CORE
DATA AND CONTROL
SERIAL INTERFACE
CONTROL
REGISTER
ON-BOARD
REFERENCE
BUFFER
10-BIT
DAC
FULL-SCALE
CONTROL
FSYNC SCLK SDATA
1 Protected by US Patent Number 6747583, other patents pending.
Figure 1.
REF FSADJUST
SYNCOUT
DGND O/P
MSBOUT
IOUTB
IOUT
COMP
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice.
No license is granted by implication or otherwise under any patent or patent rights of Analog
Devices.Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.






AD5930 Datasheet, Funktion
AD5930
TIMING CHARACTERISTICS
All input signals are specified with tr = tf = 5 ns (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2.
See Figure 4 to Figure 7. DVDD = 2.3 V to 5.5 V, AGND = DGND = 0 V, all specifications TMIN to TMAX, unless otherwise noted.
Table 2.1
Parameter
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t12
t13
t14
t15
t16
t17
Limit at TMIN, TMAX
20
8
8
25
10
10
5
10
5
3
2 x t1
0
10 x t1
8 x t1
2 x t1
2 x t1
2 x t1
20
Unit
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns typ
ns typ
ns typ
ns typ
ns typ
ns max
Conditions/Comments
MCLK period
MCLK high duration
MCLK low duration
SCLK period
SCLK high time
SCLK low time
FSYNC to SCLK falling edge setup time
FSYNC to SCLK hold time
Data setup time
Data hold time
Minimum CTRL pulse width
CTRL rising edge to MCLK falling edge setup time
CTRL rising edge to IOUT/IOUTB delay (initial pulse, includes initialization)
CTRL rising edge to IOUT/IOUTB delay (initial pulse, includes initialization)
Frequency change to SYNC output, saw sweep, each frequency increment
Frequency change to SYNC output, saw sweep, end of sweep
Frequency change to SYNC output, triangle sweep, end of sweep
MCLK falling edge after 16th clock edge to MSB out
1 Guaranteed by design, not production tested.
MCLK
t1
t2
t3
Figure 3. Master Clock
SCLK
FSYNC
SDATA
t5
t7 t6
t4
t8
D15 D14
t10
t9
D2 D1
D0
Figure 4. Serial Timing
D15 D14
Rev. 0 | Page 6 of 28

6 Page









AD5930 pdf, datenblatt
AD5930
70
TA = 25°C
AVDD = DVDD = 5V
65 fOUT = FMCLK/4096
60
55
50
45
40
0 10M 20M 30M 40M
MCLK FREQUENCY (MHz)
Figure 15. SNR vs. MCLK Frequency
1.25
AVDD = DVDD = 5V
1.23
50M
1.21
1.19
1.17
1.15
–40
–20 0
20 40 60 80
TEMPERATURE (°C)
Figure 16. VREF vs. Temperature
100 120
2.0
1.9 AVDD = DVDD = 2.3V
1.8
1.7 AVDD = DVDD = 5V
1.6
1.5
1.4
1.3
1.2
–40
–20 0
20 40 60 80 100
TEMPERATURE (°C)
Figure 17. Wake-up Time vs. Temperature
120
12
10
8
6
4
2
0
552 554 556 558 560 562 564 566 568 570 572
VOUT PEAK-TO-PEAK (mV)
Figure 18. Histogram of VOUT Peak-to-Peak
12
10
8
6
4
2
0
44.4 44.6 44.8 45.0 45.2 45.4 45.6 45.8 46.0 46.2
VOUT OFFSET (mV)
Figure 19. Histogram of VOUT Offset
0
TA = 25°C
–10
100mV p-p RIPPLE
NO DECOUPLING ON SUPPLIES
AVDD = DVDD = 5V
–20
–30
DVDD (on CAP/2.5V)
–40
–50
–60
–70 AVDD (on IOUT)
–80
10
100 1k 10k 100k
MODULATING FREQUENCY (Hz)
Figure 20. PSSR
1M
Rev. 0 | Page 12 of 28

12 Page





SeitenGesamt 28 Seiten
PDF Download[ AD5930 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
AD5930Programmable Frequency Sweep and Output Burst Waveform GeneratorAnalog Devices
Analog Devices
AD5932Programmable Frequency Scan Waveform GeneratorAnalog Devices
Analog Devices
AD59331 MSPS 12-Bit Impedance ConverterAnalog Devices
Analog Devices
AD593412-Bit Impedance ConverterAnalog Devices
Analog Devices

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche