Information

Texas Instruments Signal Chain Guide 2013 | 51
Data Converters
ADC by Architecture — Folding and Interpolating
12-Bit, 1.8/3.6 GSPS RF sampling ADC
ADC12D1800RF
The 12-bit 1.8 GSPS ADC12D1800RF is an RF-sampling GSPS ADC that can directly
sample input frequencies up to and above 2.7 GHz. The ADC12D1800RF has excellent
noise and linearity performance at RF frequencies, extending its usable range beyond the
third Nyquist zone.
The ADC12D1800RF provides a flexible LVDS interface which has multiple SPI
programmable options to facilitate board design and FPGA/ASIC data capture. The
LVDS outputs are compatible with IEEE 1596.3-1996 and supports programmable
common mode voltage. TI offers a complete family of 12-bit direct RF-sampling ADCs,
which deliver the industry’s best performance beyond 2.7 GHz at up to 3.6 GSPS.
ADC12D1800RF functional block diagram
Key Features
• Excellentnoiseandlinearityuptoand
above f
IN
= 2.7 GHz
• Configurabletoeither3.6GSPS
interleaved or 1800 MSPS dual ADC
•
NewDESCLKIQmodeforhigh
bandwidth, high sampling rate apps
•
Pin-compatiblewithADC1xD1x00,
ADC12Dx00RF
• AutoSyncfeatureformulti-chip
synchronization
• Internallyterminated,buffered,
differential analog inputs
•
Interleavedtimingautomaticand
manual skew adjust
• Testpatternsatoutputforsystemdebug
• Timestampfeaturetocaptureexternal
trigger
• Programmablegain,offset,andt
AD
adjust feature
• 1:1non-demuxedor1:2demuxed
LVDS outputs
Applications
• Military
• Softwaredefinedradio
Get more information: www.ti.com/product/ADC12D1800RF
V
IN
V
IN
I+
I–
V
IN
V
IN
CLK+
CLK–
Q+
Q–
R
term
R
term
R
term
Clock
Management
T/H
12-Bit
ADC
T/H
12-Bit
ADC
MUX
12
12
12
12
12
12
12
12
12
12
1:2
DeMUX
1:2
DeMUX
Control/Status
& Other Logic
Control Pins SPI
LVDS
Outputs
DI (11:0)
DQd (11:0)
DQ (11:0)
DId (11:0)
DCLKI
DCLKQ
ORI
ORQ
Folding and Interpolating GSPS ADCs
Device
Res.
(Bits) Chs Speed (MSPS)
Power
(W)
NPR
(dB)
IMD
(dBc)
Noise Fl
(dBm/Hz)
ENOB
(Bits)
SNR
(dB)
SFDR
(dBc)
HiRel
Avail. Package Price*
8-Bit
LM97600
7.6 1/2/4 5000/2500/1250 3.0 — — — 6.7 43.8 50.0 N TEPBGA-292 249.12
ADC08B3000
8 1 3000 1.6 — — — 7.2 45.3 55.4 N eLQFP-128 525.00
ADC083000
8 1 3000 1.9 — — — 7.2 45.4 57 N eLQFP-128 686.00
ADC08D1520
8 1/2 3000/1500 1.6 — — — 7.4 46.8 57 Y eLQFP-128 613.00
ADC08D1020
8 1/2 2000/1000 1.6 — — — 7.4 46.8 58 N eLQFP-128 329.00
ADC081500
8 1 1500 1.2 — — — 7.4 47 56 N eLQFP-128 266.00
ADC08D500
8 1/2 1000/500 1.4 — — — 7.5 48 55 N eLQFP-128 137.00
ADC08500
8 1 500 0.8 — — — 7.5 47.5 56 N eLQFP-128 36.00
ADC08DL502
8 2 500 1.25 38.4 –64.4 –135.4 7.2 46 55 N LQFP-144 43.50
10-Bit
ADC10D1500
10 1/2 3000/1500 3.59 48 — — 8.9 56.4 68 N TEPBGA-292 1800.00
ADC10D1000
10 1/2 2000/1000 2.77 48 — — 9.1 57 66 Y TEPBGA-292 1500.00
12-Bit
ADC12D1800
12 1/2 3600/1800 4.4 48.5 –61 –153.5 9.4 58.6 73 N TEPBGA-292 Web
ADC12D1800RF
12 1/2 3600/1800 4.29 — –64 –155 9.3 58.6 68.1 N TEPBGA-292 Web
ADC12D1600
12 1/2 3200/1600 3.88 48.5 –56 –153.6 9.4 58.5 70.3 N TEPBGA-292 Web
ADC12D1600RF
12 1/2 3200/1600 3.94 — –66.7 –154.6 9.4 59 67.9 Y TEPBGA-292 Web
ADC12D1000
12 1/2 2000/1000 3.38 49.5 –59 –152.6 9.6 60.2 71 N TEPBGA-292 Web
ADC12D1000RF
12 1/2 2000/1000 3.42 — –69 –154 9.6 60.1 71.4 N TEPBGA-292 Web
ADC12D800RF
12 1/2 1600/800 2.5 50.4 –71 –152.2 9.6 60.2 73.4 N TEPBGA-292 Web
ADC12D500RF
12 1/2 1000/500 2.02 50.4 –69 –150.5 9.7 60.4 74.3 N TEPBGA-292 Web
*Suggested resale price in U.S. dollars in quantities of 1,000. See www.ti.com/hirel for HiRel options.