ADC12DJ4000RF
SLVSEO0 – AUGUST 2021
ADC12DJ4000RF 8-GSPS Single-Channel or 4-GSPS Dual-Channel, 12-bit, RF-
Sampling Analog-to-Digital Converter (ADC)
1 Features
3 Description
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ADC core:
The ADC12DJ4000RF device is an RF-sampling,
giga-sample, analog-to-digital converter (ADC) that
can directly sample input frequencies from DC to
above 10 GHz. ADC12DJ4000RF can be configured
as a dual-channel, 4 GSPS ADC or single-channel,
8 GSPS ADC. Support of a useable input frequency
range of up to 10 GHz enables direct RF sampling
of L-band, S-band, C-band, and X-band for frequency
agile systems.
– 12-bit resolution
– Up to 8 GSPS in single-channel mode
– Up to 4 GSPS in dual-channel mode
Performance specifications:
– Noise floor (–20 dBFS, VFS = 1 VPP-DIFF):
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Dual-channel mode: –152.3 dBFS/Hz
Single-channel mode: –155.0 dBFS/Hz
– ENOB (dual channel, FIN = 2.4 GHz): 8.8 Bits
Buffered analog inputs with VCMI of 0 V:
– Analog input bandwidth (–3 dB): 8 GHz
– Usable input frequency range: > 10 GHz
– Full-scale input voltage (VFS, default): 0.8 VPP
Noiseless aperture delay (tAD) adjustment:
– Precise sampling control: 19-fs Step
– Simplifies synchronization and interleaving
– Temperature and voltage invariant delays
Easy-to-use synchronization features:
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The ADC12DJ4000RF uses a high-speed JESD204C
output interface with up to 16 serialized lanes
supporting up to 17.16 Gbps line rate. Deterministic
latency and multi-device synchronization is supported
through JESD204C subclass-1. The JESD204C
interface can be configured to trade-off line rate and
number of lanes. Both 8b/10b and 64b/66b data
encoding schemes are supported. 64b/66b encoding
supports forward error correction (FEC) for improved
bit error rates. The interface is backwards compatible
with JESD204B receivers.
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– Automatic SYSREF timing calibration
– Timestamp for sample marking
JESD204C serial data interface:
Innovative
synchronization
features,
including
– Maximum lane rate: 17.16 Gbps
– Support for 64b/66b and 8b/10b encoding
– 8b/10b modes are JESD204B compatible
Optional digital down-converters (DDC):
– 4x, 8x, 16x and 32x complex decimation
– Four independent 32-Bit NCOs per DDC
Peak RF Input Power (Diff): +26.5 dBm (+ 27.5
dBFS, 560x fullscale power)
noiseless aperture delay adjustment and SYSREF
windowing, simplify system design for multi-channel
applications. Optional digital down converters (DDCs)
are available to provide digital conversion to
baseband and to reduce the interface rate. A
programmable FIR filter allows on-chip equalization.
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Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
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Programmable FIR filter for equalization
Power consumption: 3.7 W
Power supplies: 1.1 V, 1.9 V
ADC12DJ4000RF
FCBGA (144) 10.00 mm × 10.00 mm
(1) For all available packages, see the package option
addendum at the end of the data sheet.
2 Applications
NCOA0 NCOA1 NCOB0 NCOB1 CALTRG PD
SCLK
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Oscilloscopes and wideband digitizers
Communications testers (802.11ad, 5G)
Electronic warfare (SIGINT, ELINT)
Satellite communications (SATCOM)
RF-sampling software-defined radio (SDR)
Spectrometry
SDI
SDO
SCS\
SPI Registers and
Device Control
TMSTP+
TMSTP-
DA0+
DA0-
Crossbar MUX
or Interleaving
Input
MUX
JESD204C
Link
ADC
A
A
INA+
INA-
Digital Down
Converter (DDC)
Block
DA7+
DA7-
Over-
range
PFIR
Block
DDC Options:
DDC Bypass
SYNCSE\
Decimate-by-4
Decimate-by-8
Decimate-by-16
Decimate-by-32
DB0+
DB0-
INB+
INB-
Input
MUX
JESD204C
Link
ADC
B
B
DB7+
DB7-
Aperture
Delay Adjust
JMODE
CLK+
CLK-
Clock Distribution
and Synchronization
ORA0
ORA1
ORB0
ORB1
Status
Indicators
SYSREF+
SYSREF-
SYSREF
Windowing
CALSTAT
TDIODE+
TDIODE-
ADC12DJ4000RF Block Diagram
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.