Datasheet

Data Sheet AD9832
Rev. E | Page 3 of 28
SPECIFICATIONS
V
DD
= +5 V ± 5%; AGND = DGND = 0 V; T
A
= T
MIN
to T
MAX
; REFIN = REFOUT; R
SET
= 3.9 kΩ; R
LOAD
= 300 Ω for IOUT, unless otherwise
noted. Also, see Figure 2.
Table 1.
Parameter
1
AD9832B Unit Test Conditions/Comments
SIGNAL DAC SPECIFICATIONS
Resolution 10 Bits
Update Rate (f
MAX
) 25 MSPS nom
IOUT Full Scale 4 mA nom
4.5 mA max
Output Compliance
1.35
V max
3 V power supply
DC Accuracy
Integral Nonlinearity ±1 LSB typ
Differential Nonlinearity ±0.5 LSB typ
DDS SPECIFICATIONS
2
Dynamic Specifications
Signal-to-Noise Ratio 50 dB min f
MCLK
= 25 MHz, f
OUT
= 1 MHz
Total Harmonic Distortion −53 dBc max f
MCLK
= 25 MHz, f
OUT
= 1 MHz
Spurious-Free Dynamic Range (SFDR)
3
f
MCLK
= 6.25 MHz, f
OUT
= 2.11 MHz
Narrow Band (±50 kHz)
−72
dBc min
5 V power supply
−70 dBc min 3 V power supply
Wideband (±2 MHz) −50 dBc min
Clock Feedthrough −60 dBc typ
Wake-Up Time
4
1 ms typ
Power-Down Option
Yes
VOLTAGE REFERENCE
Internal Reference @ 25°C 1.21 V typ
T
MIN
to T
MAX
1.21 ± 7% V min/V max
REFIN Input Impedance 10 MΩ typ
Reference Temperature Coefficient (TC) 100 ppm/°C typ
REFOUT Output Impedance 300 Ω typ
LOGIC INPUTS
Input High Voltage, V
INH
V
DD
− 0.9 V min
Input Low Voltage, V
INL
0.9 V max
Input Current, I
INH
10 µA max
Input Capacitance, C
IN
10 pF max
POWER SUPPLIES
AVDD 2.97/5.5 V min/V max
DVDD 2.97/5.5 V min/V max
I
AA
5 mA max 5 V power supply
I
DD
2.5 + 0.4/MHz mA typ 5 V power supply
I
AA
+ I
DD
5
15 mA max 3 V power supply
24 mA max 5 V power supply
Low Power Sleep Mode 350 µA max
1
Operating temperature range is −40°C to +85°C.
2
100% production tested.
3
f
MCLK
= 6.25 MHz, frequency word = 0x5671C71C, and f
OUT
= 2.11 MHz.
4
See Figure 13. To reduce the wake-up time at low power supplies and low temperature, the use of an external reference is suggested.
5
Measured with the digital inputs static and equal to 0 V or DVDD. The AD9832 is tested with a capacitive load of 50 pF. The part can operate with higher capacitive
loads, but the magnitude of the analog output will be attenuated. For example, a 5 MHz output signal is attenuated by 3 dB when the load capacitance equals 85 pF.