AD9244BSTZ-40 Analog Devices Inc, AD9244BSTZ-40 Datasheet - Page 25

• Manufacturer Part Number: AD9244BSTZ-40
• Description: IC ADC 14BIT 40MSPS 48-LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD9244BSTZ-40

• Data Interface: Parallel
• Number Of Bits: 14
• Sampling Rate (per Second): 40M
• Number Of Converters: 1
• Power Dissipation (max): 300mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Resolution (bits): 14bit
• Sampling Rate: 40MSPS
• Input Channel Type: Differential, Single Ended
• Supply Voltage Range - Analog: 4.75V To 5.25V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AD9244-65PCBZ - BOARD EVAL FOR AD9244-65AD9244-40PCBZ - BOARD EVAL FOR AD9244-40
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Reference Decoupling
The VREF pin should be bypassed to the REFGND pin with a
10 μF tantalum capacitor in parallel with a low inductance
0.1 μF ceramic capacitor. It is also necessary to add a capacitor
network to decouple the REFT and REFB pins. Figure 49 shows
the recommended decoupling networks.
CML
The AD9244 has a midsupply reference point. This is used
within the internal architecture of the AD9244 and must be
decoupled with a 0.1 μF capacitor. It sources or sinks a load of
up to 300 μA. If more current is required, the CML pin should
be buffered with an amplifier.
Rev. C | Page 25 of 36
VR
VR is an internal bias point on the AD9244. It must be
decoupled to AGND with a 0.1 μF capacitor.
0.1μF
Figure 63. CML/VR Decoupling
CML
AD9244
VR
0.1μF
AD9244