aDual Channel, 14-Bit, 65 MSPS A/D Converter
with Analog Input Signal Conditioning
AD13465
FEATURES
state-of-the-art high-density circuit design and laser-trimmed
thin-film resistor networks to achieve exceptional channel
matching and impedance control, and provide for significant
board area savings.
Dual, 65 MSPS Minimum Sample Rate
Channel-to-Channel Matching, ؎1% Gain Error
90 dB Channel-to-Channel Isolation
DC-Coupled Signal Conditioning
85 dB Spurious-Free Dynamic Range
Selectable Bipolar Inputs
Multiple options are provided for driving the analog input, includ-
ing single-ended, differential, and optional series filtering. The
AD13465 also offers the user a choice of analog input signal
ranges to further minimize additional external signal condition-
ing, while remaining general-purpose. The AD13465 operates
with 5.0 V for the analog signal conditioning, 5.0 V supply for
the analog-to-digital conversion, and 3.3 V digital supply for
the output stage. Each channel is completely independent, allow-
ing operation with independent Encode and Analog Inputs, while
maintaining minimal crosstalk and interference.
(؎1 V and ؎0.5 V Ranges)
Integral Two-Pole Low-Pass Nyquist Filter
Two’s Complement Output Format
3.3 V Compatible Outputs
1.8 W per Channel
Industrial and Military Grade
APPLICATIONS
Radar Processing
Optimized for I/Q Baseband Operation
Phased Array Receivers
Multichannel, Multimode Receivers
GPS Antijamming Receivers
Communications Receivers
The AD13465 is packaged in a 68-lead ceramic gull wing
package. Manufacturing is done on Analog Devices’ MIL-
38534 Qualified Manufacturers Line (QML) and components
are available up to Class-H (–40°C to +85°C). The components
are manufactured using Analog Devices’ high-speed comple-
mentary bipolar process (XFCB).
PRODUCT DESCRIPTION
PRODUCT HIGHLIGHTS
The AD13465 is a complete dual channel signal processing
solution including on-board amplifiers, references, ADCs,
and output termination components to provide optimized
system performance. The AD13465 has on-chip track-and-hold
circuitry and utilizes an innovative multipass architecture to
achieve 14-bit, 65 MSPS performance. The AD13465 uses
1. Guaranteed sample rate of 65 MSPS.
2. Input signal conditioning included; gain and impedance
matching.
3. Single-ended, differential, or off-module filter options.
4. Fully tested/characterized full channel performance
5. Pin compatible with 12-bit AD13280 product family.
FUNCTIONAL BLOCK DIAGRAM
AMP-IN-B-1
AMP-IN-A-1
AMP-IN-A-2
AMP-IN-B-2
AMP-OUT-B
AMP-OUT-A
A–IN
B+IN
B–IN
A+IN
DROUTA
(LSB) D0A
DROUTB
AD13465
D1A
ENC
D2A
D3A
D4A
TIMING
ENC
VREF
DROUT
VREF
D5A
D13B (MSB)
D12B
DROUT
D6A
14
14
D7A
D8A
5
11
100⍀ OUTPUTTERMINATORS
D11B
100⍀ OUTPUTTERMINATORS
D10B
9
D9A
3
TIMING
D9B
D10A
D8B
D7B
ENC
D0B D1B D2B D3B D4B D5B D6B
(LSB)
ENC
D11A D12A D13A
(MSB)
REV. 0
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reliable. However, no responsibility is assumed by Analog Devices for its
use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
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Tel: 781/329-4700
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© Analog Devices, Inc., 2001