AD9649BCPZ-20 Analog Devices Inc, AD9649BCPZ-20 Datasheet - Page 29

• Manufacturer Part Number: AD9649BCPZ-20
• Description: IC ADC 14BIT 20MSPS 32LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD9649BCPZ-20

• Data Interface: Serial, SPI™
• Number Of Bits: 14
• Sampling Rate (per Second): 20M
• Number Of Converters: 1
• Power Dissipation (max): 51.8mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN, CSP Exposed Pad
• Resolution (bits): 14bit
• Sampling Rate: 20MSPS
• Input Channel Type: Differential
• Supply Voltage Range - Analog: 1.7V To 1.9V
• Supply Voltage Range - Digital: 1.7V To 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MEMORY MAP REGISTER DESCRIPTIONS
For additional information about functions controlled in
Register 0x00 to Register 0xFF, see the AN-877 Application
Note, Interfacing to High Speed ADCs via SPI.
USR2 (Register 0x101)
Bit 3—Enable GCLK Detect
Normally set high, Bit 3 enables a circuit that detects encode
rates below ~5 MSPS. When a low encode rate is detected, an
internal oscillator, GCLK, is enabled, ensuring the proper oper-
ation of several circuits. If set low, the detector is disabled.
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Bit 2—Run GCLK
Bit 2 enables the GCLK oscillator. For some applications with
encode rates below 10 MSPS, it may be preferable to set this bit
high to supersede the GCLK detector.
Bit 0—Disable SDIO Pull-Down
Bit 0 can be set high to disable the internal 30 kΩ pull-down on
the SDIO pin, which can be used to limit the loading when many
devices are connected to the SPI bus.
AD9649