AD9830 Просмотр технического описания (PDF) - Analog Devices
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AD9830 Datasheet PDF : 16 Pages
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AD9830–SPECIFICATIONS1 (VDD = +5 V ؎ 5%; AGND = DGND = 0 V; TA = TMIN to TMAX; REFIN = REFOUT;
RSET = 1 k⍀; RLOAD = 51 ⍀ for IOUT and IOUT unless otherwise noted)
Parameter
AD9830A
Units
Test Conditions/Comments
SIGNAL DAC SPECIFICATIONS
Resolution
10
Update Rate (fMAX)
50
IOUT Full Scale
20
Output Compliance
1
DC Accuracy
Integral Nonlinearity
±1
Differential Nonlinearity
± 0.5
DDS SPECIFICATIONS2
Dynamic Specifications
Signal-to-Noise Ratio
50
Total Harmonic Distortion
–53
Spurious Free Dynamic Range (SFDR)3
Narrow Band
(± 50 kHz)
–72
(± 200 kHz)
–68
Wide Band (± 2 MHz)
–50
Clock Feedthrough
–55
Wake Up Time
1
Power-Down Option
Yes
Bits
MSPS max
mA max
V max
LSB typ
LSB typ
dB min
dBc max
dBc min
dBc min
dBc min
dBc typ
ms typ
fMCLK = fMAX , fOUT = 2 MHz
fMCLK = fMAX , fOUT = 2 MHz
fMCLK = 6.25 MHz, fOUT = 2.11 MHz
VOLTAGE REFERENCE
Internal Reference @ +25°C
TMIN to TMAX
REFIN Input Impedance
Reference TC
REFOUT Impedance
1.21
1.21 ± 7%
10
100
300
Volts typ
Volts min/max
MΩ typ
ppm/°C typ
Ω typ
LOGIC INPUTS
VINH, Input High Voltage
VINL, Input Low Voltage
IINH, Input Current
CIN, Input Capacitance
POWER SUPPLIES
AVDD
DVDD
IAA
IDD
IAA + IDD4
Low Power Sleep Mode5
VDD–0.9
0.9
10
10
4.75/5.25
4.75/5.25
25
6 + 0.5/MHz
60
0.25
1
V min
V max
µA max
pF max
V min/V max
V min/V max
mA max
mA typ
mA max
mA typ
mA max
fOUT = 2 MHz
1 MΩ Resistor Tied Between
REFOUT and AGND
NOTES
1Operating temperature range is as follows: A Version: –40°C to +85°C.
2All dynamic specifications are measured using IOUT. 100% production tested.
3fMCLK = 6.25 MHz, Frequency Word = 5671C71C HEX, fOUT = 2.11 MHz.
4Measured with the digital inputs static and equal to 0 V or DVDD.
5The Low Power Sleep Mode current is 2 mA typically when a 1 MΩ resistor is
not tied from REFOUT to AGND.
The AD9830 is tested with a capacitive load of 50 pF. The part can be operated
with higher capacitive loads, but the magnitude of the analog output will be attenu-
ated. For example, a 10 MHz output signal will be attenuated by 3 dB when the
load capacitance equals 250 pF.
Specifications subject to change without notice.
10nF
RSET
1kΩ
REFOUT
REFIN
FS
ADJUST
ON-BOARD
REFERENCE
FULL-SCALE
CONTROL
COMP
AVDD
10nF
12
SIN
ROM
10-BIT
DAC
IOUT
IOUT 51Ω
51Ω
50pF
50pF
Figure 1. Test Circuit with Which Specifications Are
Tested
–2–
REV. A
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