AD9215-65 Analog Devices, AD9215-65 Datasheet
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AD9215-65
Manufacturer Part Number
AD9215-65
Description
10-Bit, 65/80/105 MSPS 3.3 V A/D Converter
Manufacturer
Analog Devices
Datasheet
1.AD9215-65.pdf
(13 pages)
a
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 result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
PRODUCT DESCRIPTION
The AD9215 is a family of monolithic, single 3 V supply, 10-bit,
65/80/105 MSPS analog-to-digital converters. This family
features a high performance sample-and-hold amplifier and
voltage reference. The AD9215 uses a multistage differential
pipelined architecture with output error correction logic to
provide 10-bit accuracy at 105 MSPS data rates and guarantee
no missing codes over the full operating temperature range.
The wide bandwidth, truly differential SHA allows for a variety
of user-selectable input ranges and offsets including single-ended
applications. It is suitable for multiplexed systems that switch
full-scale voltage levels in successive channels and for sampling
single-channel inputs at frequencies well beyond the Nyquist rate.
Combined with power and cost savings over previously available
analog-to-digital converters, the AD9215 is suitable for applica-
tions in communications, imaging and medical ultrasound.
A single-ended clock input is used to control all internal conversion
cycles. A duty cycle stabilizer compensates for wide variations in
the cock duty cycle while maintaining excellent performance.
The digital output data is presented in straight binary or two’s
complement formats. An out-of-range signal indicates an over-
flow condition, which can be used with the most significant bit
to determine low or high overflow.
Fabricated on an advanced CMOS process, the AD9215 is avail-
able in both a 28-lead surface-mount plastic package and a
32-lead chip scale package, and is specified over the industrial
temperature range (–40°C to +85°C).
REV. PrA
FEATURES
Single 3 V Supply Operation (2.7 V to 3.6 V)
SNR = 58 dBc (to Nyquist)
SFDR = 78 dBc (to Nyquist)
Low Power: 75 mW at 65 MSPS
Differential Input with 400 MHz Bandwidth
On-Chip Reference and SHA
DNL =
Flexible Analog Input: 1 V p-p to 2 V p-p Range
Offset Binary or Two’s Complement Data Format
Clock Duty Cycle Stabilizer
APPLICATIONS
Ultrasound Equipment
IF Sampling in Communications Receivers:
Battery-Powered Instruments
Hand-Held Scopemeters
Low Cost Digital Oscilloscopes
0.25 LSB
PRODUCT HIGHLIGHTS
1. The AD9215 operates from a single 3 V power supply, and
2. Operating at 105 MSPS, the AD9215 consumes a low 120 mW.
3. The patented SHA input maintains excellent performance
4. The AD9215 is pin compatible with the AD9235, a 12-bit,
5. The clock duty cycle stabilizer maintains performance over a
6. The OR output bit indicates when the signal is beyond the
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Fax: 781/326-8703
SENSE
REFB
VREF
REFT
VIN+
VIN–
features a separate digital output driver supply to accommo-
date 2.5 V and 3.3 V logic families.
for input frequencies up to 200 MHz, and can be configured
for single-ended or differential operation.
20/40/65 MSPS A/D converter. This allows a simplified
upgrade from 10 to 12 bits for systems up to 65 MSPS.
wide range of clock pulsewidths.
selected input range.
SELECT
REF
FUNCTIONAL BLOCK DIAGRAM
AD9215
SHA
10-Bit, 65/80/105 MSPS
AVDD
AGND
0.5V
DUTY CYCLE
STABLIZER
CLOCK
3 V A/D Converter
CLOCK
1 1/2-BIT PIPELINE
CORRECTION LOGIC
OUTPUT BUFFERS
7-STAGE
PDWN
14
10
© Analog Devices, Inc., 2002
DRVDD
SELECT
MODE
MODE
AD9215
www.analog.com
A/D
DRGND
3
OR
D9 (MSB)
D0