Datasheet

Data Sheet AD9837
Rev. A | Page 3 of 28
SPECIFICATIONS
VDD = 2.3 V to 5.5 V, AGND = DGND = 0 V, T
A
= T
MIN
to T
MAX
, 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
V
OUT
Maximum 0.645 V
V
OUT
Minimum
37
mV
V
p-p
0.610 V
V
OUT
TC 200 ppm/°C
DC Accuracy
Integral Nonlinearity (INL) ±1.0 LSB
Differential Nonlinearity (DNL) ±0.5 LSB
DDS SPECIFICATIONS
Dynamic Specifications
Signal-to-Noise Ratio (SNR)
A Grade
−64
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 −68 dBc f
MCLK
= 5 MHz, f
OUT
= f
MCLK
/4096
B Grade −68 dBc f
MCLK
= 16 MHz, f
OUT
= f
MCLK
/4096
Spurious-Free Dynamic Range (SFDR)
Wideband (0 to Nyquist)
A Grade −65 dBc f
MCLK
= 5 MHz, f
OUT
= f
MCLK
/50
B Grade −65 dBc f
MCLK
= 16 MHz, f
OUT
= f
MCLK
/50
Narrow-Band (±200 kHz)
A Grade −94 dBc f
MCLK
= 5 MHz, f
OUT
= f
MCLK
/50
B Grade
−97
dBc
f
MCLK
= 16 MHz, f
OUT
= f
MCLK
/50
Clock Feedthrough −67 dBc
Wake-Up Time 1 ms
LOGIC INPUTS
Input High Voltage, V
INH
1.7 V 2.3 V to 2.7 V power supply
2.0 V 2.7 V to 3.6 V power supply
2.8 V 4.5 V to 5.5 V power supply
Input Low Voltage, V
INL
0.5 V 2.3 V to 2.7 V power supply
0.7
V
2.7 V to 3.6 V power supply
0.8 V 4.5 V to 5.5 V power supply
Input Current, I
INH
/I
INL
10 µA
Input Capacitance, C
IN
3 pF
POWER SUPPLIES f
MCLK
= 16 MHz, f
OUT
= f
MCLK
/4096
VDD 2.3 5.5 V
I
DD
A Grade 3.7 5.0 mA I
DD
code dependent; see Figure 6
B Grade 4.5 5.5 mA I
DD
code dependent; see Figure 7
Low Power Sleep Mode
0.5
0.8
mA
DAC powered down (SLEEP1 and
SLEEP12 bits = 11; see Table 15)
1
Operating temperature range is −40°C to +125°C; typical specifications are at 25°C.