ADC12DC105_14 Datasheet, PDF (1/24 Pages) Texas Instruments – Dual 12-Bit, 105 MSPS A/D Converter with CMOS Outputs

ADC12DC105
www.ti.com
SNAS469A – SEPTEMBER 2008 – REVISED OCTOBER 2008
ADC12DC105 Dual 12-Bit, 105 MSPS A/D Converter with CMOS Outputs
Check for Samples: ADC12DC105
FEATURES
1
•2 Internal Sample-and-Hold Circuit and Precision
Reference
• Low Power Consumption
• Clock Duty Cycle Stabilizer
• Single +3.0V or +3.3V Supply Operation
• Power-Down Mode
• Offset Binary or 2's Complement Output Data
Format
• 60-Pin WQFN Package, (9x9x0.8mm, 0.5mm
Pin-Pitch)
APPLICATIONS
• High IF Sampling Receivers
• Wireless Base Station Receivers
• Test and Measurement Equipment
• Communications Instrumentation
• Portable Instrumentation
KEY SPECIFICATIONS
• Resolution: 12 Bits
• Conversion Rate: 105 MSPS
• SNR (f_IN = 170 MHz): 69 dBFS (Typ)
• SFDR (f_IN = 170 MHz): 83 dBFS (Typ)
• Full Power Bandwidth: 1 GHz (Typ)
• Power Consumption
– 690 mW (Typ), V_A = 3.0V
– 800 mW (Typ), V_A = 3.3V
DESCRIPTION
The ADC12DC105 is a high-performance CMOS
analog-to-digital converter capable of converting two
analog input signals into 12-bit digital words at rates
up to 105 Mega Samples Per Second (MSPS). These
converters use a differential, pipelined architecture
with digital error correction and an on-chip sample-
and-hold circuit to minimize power consumption and
the external component count, while providing
excellent dynamic performance. A unique sample-
and-hold stage yields a full-power bandwidth of 1
GHz. The ADC12DC080/105 may be operated from a
single +3.0V or +3.3V power supply. A power-down
feature reduces the power consumption to very low
levels while still allowing fast wake-up time to full
operation. The differential inputs provide a 2V full
scale differential input swing. A stable 1.2V internal
voltage reference is provided, or the ADC12DC105
can be operated with an external 1.2V reference.
Output data format (offset binary versus 2's
complement) and duty cycle stabilizer are pin-
selectable. The duty cycle stabilizer maintains
performance over a wide range of clock duty cycles.
The ADC12DC105 is available in a 60-lead WQFN
package and operates over the industrial temperature
range of −40°C to +85°C.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated