AD10226_15 Datasheet, PDF (1/20 Pages) Analog Devices – Dual-Channel, 12-Bit 125 MSPS

a
FEATURES
Two Independent 12-Bit, 125 MSPS ADCs
Channel-to-Channel Isolation, > 80 dB
AC-Coupled Signal Conditioning Included
Gain Flatness up to Nyquist, < 0.1 dB
Input VSWR 1.1:1 to Nyquist
80 dB Spurious-Free Dynamic Range
Two’s Complement Output Format
3.3 V or 5 V CMOS-Compatible Output Levels
1.5 W Per Channel
Single-Ended or Differential Input
350 MHz Input Bandwidth
APPLICATIONS
Wireless and Wired Broadband Communications
Base Stations and “Zero-IF” or Direct IF Sampling
Subsystems
Wireless Local Loop (WLL)
Local Multipoint Distribution Service (LMDS)
Radar and Satellite Subsystems
Dual-Channel, 12-Bit 125 MSPS
IF Sampling A/D Converter
AD10226
PRODUCT DESCRIPTION
The AD10226 offers two complete ADC channels with on-module
signal conditioning for improved dynamic performance. Each wide
dynamic range ADC has a transformer coupled front end
optimized for direct-IF sampling. The AD10226 has on-chip
track-and-hold circuitry and utilizes an innovative architecture to
achieve 12-bit, 125 MSPS performance. The AD10226 uses
innovative high density circuit design to achieve exceptional
performance, while still maintaining excellent isolation and pro-
viding for board area savings.
The AD10226 operates with 5.0 V analog supply and 3.3 V digital
supply. Each channel is completely independent, allowing opera-
tion with independent ENCODE and analog inputs. The AD10226
is available in a 35 mm square 385-lead BGA package.
PRODUCT HIGHLIGHTS
1. Guaranteed sample rate of 125 MSPS
2. Input signal conditioning included with full-power bandwidth
to 350 MHz
3. Industry-leading IF sampling performance
FUNCTIONAL BLOCK DIAGRAM
D0A
(LSB)
D1A
D2A
D3A
D4A
D5A
D6A
D7A
D8A
D9A
D10A
D11A
(MSB)
DFS_A
SFDR_A
A_INA1 A_INA2
A_INB1 A_INB2
T1A
T1B
50⍀
T/H
ADC
AD10226
50⍀
T/H
ADC
12
12
OUTPUT
RESISTORS
TIMING
REF
REF
12
12
OUTPUT
RESISTORS
TIMING
D0B
(LSB)
D1B
D2B
D3B
D4B
D5B
D6B
D7B
D8B
D9B
D10B
D11B
(MSB)
DFS_B
SFDR_B
ENCODEA ENCODEA REF_A_OUT REF_B_OUT ENCODEB ENCODEB
REV. 0
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© Analog Devices, Inc., 2002