Datasheet

AD9838
Rev. A | Page 3 of 32
SPECIFICATIONS
AVDD = DVDD = 2.3 V to 5.5 V, AGND = DGND = 0 V, T
A
= T
MIN
to T
MAX
, R
SET
= 6.8 kΩ, R
LOAD
= 200 Ω for IOUT and IOUTB, unless
otherwise noted.
Table 1.
Parameter
1
Min Typ Max Unit Test Conditions/Comments
SIGNAL DAC SPECIFICATIONS
Resolution 10 Bits
Update Rate
A Grade 5 MSPS
B Grade 16 MSPS
I
OUT
Full Scale
2
3.0 mA
V
OUT
Maximum 0.6 V
V
OUT
Minimum 30 mV
Output Compliance
3
0.8 V
DC Accuracy
Integral Nonlinearity (INL) ±1 LSB
Differential Nonlinearity (DNL) ±0.5 LSB
DDS SPECIFICATIONS
Dynamic Specifications
Signal-to-Noise Ratio (SNR)
A Grade −63 dB f
MCLK
= 5 MHz, f
OUT
= f
MCLK
/4096
B Grade −64 dB f
MCLK
= 16 MHz, f
OUT
= f
MCLK
/4096
Total Harmonic Distortion (THD)
A Grade −64 dBc f
MCLK
= 5 MHz, f
OUT
= f
MCLK
/4096
B Grade −64 dBc f
MCLK
= 16 MHz, f
OUT
= f
MCLK
/4096
Spurious-Free Dynamic Range (SFDR)
Wideband (0 to Nyquist)
A Grade −68 dBc f
MCLK
= 5 MHz, f
OUT
= f
MCLK
/50
B Grade −66 dBc f
MCLK
= 16 MHz, f
OUT
= f
MCLK
/50
Narrow-Band (±200 kHz)
A Grade −97 dBc f
MCLK
= 5 MHz, f
OUT
= f
MCLK
/50
B Grade −92 dBc f
MCLK
= 16 MHz, f
OUT
= f
MCLK
/50
Clock Feedthrough
A Grade −68 dBc f
MCLK
= 5 MHz, f
OUT
= reset
B Grade −65 dBc f
MCLK
= 16 MHz, f
OUT
= reset
Wake-Up Time 1 ms
COMPARATOR
Input Voltage Range 1 V p-p AC-coupled internally
Input Capacitance 10 pF
Input High-Pass Cutoff Frequency 3 MHz
Input DC Resistance 5 MΩ
Input Leakage Current 10 μA
OUTPUT BUFFER
Output Rise/Fall Time 12 ns Using a 15 pF load
Output Jitter 120 ps rms 3 MHz sine wave 0.6 V p-p
VOLTAGE REFERENCE
Internal Reference 1.11 1.18 1.24 V
REFOUT Output Impedance
4
1 kΩ
Reference TC 100 ppm/°C
FSADJUST Voltage 1.14 V