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ADS58J89
SBAS659 –NOVEMBER 2014
ADS58J89 Quad Channel 14-Bit 250/500 MSPS Receiver and Feedback IC
1 Features
3 Description
The ADS58J89 is a high-linearity, quad-channel, 14-
bit, 250/500-MSPS IF (intermediate frequency)
receiver. The four channels contain 500MSPS 14-bit
ADCs followed by signal processing for wireless
infrastructure systems. The channels can be
configured in various modes depending on
bandwidth, resolution and sample time requirements.
The signal processing block contains selectable
modes for decimation filters, SNR Boost filters,
resolution versus time and time-division duplex (TDD)
burst mode. Designed for high antenna count
systems, the 4 channels provides high bandwidth and
linearity to multi-channel receivers in a small footprint.
The device can be dual function as traffic receiver
and power amplifier linearization feedback path in
TDD systems.
1
•
4-Ch, 14-Bit 500MSPS With Digital Signal
Processing
•
Power Amplifier Linearization (Feedback) Modes
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14-Bits Every Other Sample at 250MSPS
Programmable Resolution vs Duty Cycle
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Duty Cycle 3:2 (60% 11-Bit, 40% 9-Bit)
Duty Cycle 2:3 (40% 12-Bit, 60% 9-Bit)
Duty Cycle 1:3 (25% 14-Bit, 75% 9-Bit)
•
Traffic Receiver Modes
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–
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14-Bit 250MSPS: Decimate by 2 Filter,
High/Low Pass
9-Bit SNR-Boost Filter (150-MHz Max
Bandwidth)
Key Specifications:
9-to-14-Bit TDD Burst (200-MHz Max
Bandwidth)
•
•
•
•
•
Power Dissipation: 875 mW/ch
Input Bandwidth (3dB): 900 MHz
Aperture Jitter: 98 fs rms
Channel Isolation: 85 dB
Performance at ƒin = 170 MHz at 1.25 Vpp,
–1 dBFS
•
•
Flexible Input Clock Buffer With Divide by 1/2/4
JESD204B Digital Interface up to 5.0Gbps
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1 or 2 Lanes per Channel, With Subclass 1
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64-Pin VQFN Package (9 × 9 mm)
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–
SNR: 65.8 dBFS
SFDR: 85 dBc HD2,3; 95 dBFS non-HD2,3
2 Applications
•
Multi-Carrier, Multi-Mode, Multi-Band Cellular
Receivers
Device Information(1)
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–
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TDD-LTE
PART NUMBER
ADS58J89
PACKAGE
MAX OUTPUT RATE
FDD-LTE
VQFN (64)
500 MSPS
CDMA, WCMDA, CMDA2k
GSM
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
•
RF and Microwave Backhaul
Simplified Schematic
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–
Point-to-Point Backhaul
OVRA
Point-to-Multi-Point Backhaul
2x Dec
14-bit
ADC
Burst Mode
SNR Boost
JESD204B
JESD204B
INAP/M
INBP/M
DA[0,1]P/M
•
•
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Wireless Repeaters
Distributed Antenna Systems (DAS)
Broadband Wireless
2x Dec
Burst Mode
SNR Boost
14-bit
ADC
DB[0,1]P/M
OVRB
SYSREFABP/M
CLKINP/M
SYNCbAB
SYNCbCD
Divide by
1, 2, 4
PLL
x10/x20
SYSREFCDP/M
OVRC
2x Dec
Burst Mode
SNR Boost
14-bit
ADC
JESD204B
JESD204B
DC[0,1]P/M
INCP/M
2x Dec
Burst Mode
SNR Boost
14-bit
ADC
INDP/M
VCM
DD[0,1]P/M
OVRD
Common
Mode
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.