AD9216 10-Bit, 65/80/105 MSPS Dual Analog to Digital Converter Data Handbook Manual

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10-Bit, 65/80/105 MSPS Dual A/D Converter

Preliminary Technical Data AD9216

specified over the industrial temperature range (–40°C to

FEATURES

Integrated Dual 10-Bit A-to-D Converters

AVDD AGND

Single 3 V Supply Operation (2.7 V to 3.3 V) SNR = 58 d Bc (to Nyquist, AD9216-105) OTR_A

VIN+_A

SFDR = 75 d Bc (to Nyquist, AD9216-105) SHA ADC D9A-D0A

VIN- _A

OEB_A

Low Power: 280m W at 105MSPS Differential Input with 500 MHz 3 d B Bandwidth REFT_A MUX_SELECT

REFB_A Clock CLK_A

Exceptional Cross Talk Immunity > 75d B

Duty Cycle CLK_B

Flexible Analog Input: 1 V p-p to 2 V p-p Range Stabilizer DCSSENSE

Offset Binary or Twos Complement Data Format SHARED_REF

AGND 0.5V Mode PWDN_A

Clock Duty Cycle Stabilizer

Control PWDN_B

REFT_B

APPLICATIONS REFB_B

OTR_B

Ultrasound Equipment VIN+_B

SHA ADC D10B-D0B10

IF Sampling in Communications Receivers: VIN-_B

OEB_B

3G, Radio Point-to-Point, LMDS, MMDS AD9216 Battery-Powered Instruments

DRVDD DRGND

Hand-Held Scopemeters

Figure 1. Functional Block Diagram

Low Cost Digital Oscilloscopes

PRODUCT HIGHLIGHTS

GENERAL DESCRIPTION

1. Pin compatible with AD9238, dual 12-bit

The AD9216 is a dual, 3 V, 10-bit, 65/80/105 MSPS analog-to-

20/40/65MSPS ADC and AD9248, dual 14-bit

digital converter. It features dual high performance sample-and

20/40/65MSPS ADC.

hold amplifiers and an integrated voltage reference. The

AD9216 uses a multistage differential pipelined architecture 2. Speed grade options off 105 MSPS, 80 MSPS, and with output error correction logic to provide 10-bit accuracy 65 MSPS allow flexibility between power, cost, and and guarantee no missing codes over the full operating performance to suit an application.

temperature range at up to 105 MSPS data rates. The wide Ou tp ut ux

Ou tp ut ux

3. Low power consumption: Bu ffe rs

bandwidth, differential SHA allows for a variety of user Bu ffe rs

selectable input ranges and offsets including single-ended AD9216-105: 105 MSPS = 280 m W applications. It is suitable for various applications including AD9216-80: 80 MSPS = 238 m W multiplexed systems that switch full-scale voltage levels in AD9216-65: 65 MSPS = 215m W successive channels and for sampling inputs at frequencies well

4. The patented SHA input maintains excellent

beyond the Nyquist rate.

performance for input frequencies up to 100 MHz and can be configured for single-ended or differential

Dual single-ended clock inputs are used to control all internal

operation.

conversion cycles. A duty cycle stabilizer is available on the AD9216 (all speed grades) and can compensate for wide

5. Typical channel isolation of 75 d B @ f IN = 10 MHz.

variations in the clock duty cycle, allowing the converters to maintain excellent performance. The digital output data is 6. The clock duty cycle stabilizer maintains performance presented in either straight binary or twos complement format. over a wide range of clock duty cycles. Out-of-range signals indicate an overflow condition, which can be used with the most significant bit to determine low or high overflow.

Fabricated on an advanced CMOS process, the AD9216 is available in a space saving 64-lead LFCSP (9x9) and is

Rev. Pr D_6/15/2004 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may

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result from its use. Specifications subject to change without notice. No license

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