AD9146 Analog Devices, AD9146 Datasheet - Page 36

• Manufacturer Part Number: AD9146
• Description: Dual, 16-Bit, 1230 MSPS, TxDAC+® Digital-to-Analog Converter
• Manufacturer: Analog Devices

Specifications of AD9146

• Resolution (bits): 16bit
• Dac Update Rate: 1.23GSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: Byte,LVDS,Nibble

AD9146
INVERSE SINC FILTER
The inverse sinc (sinc
response of the sinc
is shown in Figure 46. The composite response has a pass-band
ripple of less than ±0.05 dB up to a frequency of 0.4 × f
provide the necessary peaking at the upper end of the pass band,
the inverse sinc filters shown have an intrinsic insertion loss of
about 3.2 dB. Figure 46 shows the composite frequency response.
The sinc
the bypass sinc
−1
filter is disabled by default. It can be enabled by setting
−1
bit to 0 (Register 0x1B, Bit 6).
−1
−1
filter and the sin(x)/x response of the DAC
) filter is a nine-tap FIR filter. The composite
DACCLK
Rev. A | Page 36 of 56
. To
–3.0
–3.2
–3.4
–3.6
–3.8
–4.0
Figure 46. Sample Composite Responses of the Sinc
0
0.1
with sin(x)/x Roll-Off
0.2
f
OUT
/
f
DAC
0.3
Data Sheet
0.4
−1
Filter
0.5