ADC12C080 Datasheet, PDF (1/32 Pages) National Semiconductor (TI) – 12-Bit, 65/80 MSPS A/D Converter

ADC12C080
www.ti.com
SNAS379C – SEPTEMBER 2006 – REVISED APRIL 2013
ADC12C080 12-Bit, 65/80 MSPS A/D Converter
Check for Samples: ADC12C080
FEATURES
1
•2 1 GHz Full Power Bandwidth
• Internal Reference and Sample-and-Hold
Circuit
• Low Power Consumption
• Data Ready Output Clock
• Clock Duty Cycle Stabilizer
• Single +3.0V Supply Operation
• Power-Down Mode
• 32-Pin WQFN Package, (5x5x0.8mm, 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 80 MSPS
• SNR (f_IN = 170 MHz) 68 dBFS (typ)
• SFDR (f_IN = 170 MHz) 86 dBFS (typ)
• Full Power Bandwidth 1 GHz (typ)
• Power Consumption 300 mW (typ)
DESCRIPTION
The ADC12C080 is a high-performance CMOS
analog-to-digital converter capable of converting
analog input signals into 12-bit digital words at rates
up to 80 Mega Samples Per Second (MSPS). This
converter uses 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 ADC12C080 may be operated from a
single +3.0V power supply and consumes low power.
A separate +2.5V supply may be used for the digital
output interface which allows lower power operation
with reduced noise. 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 accept a 2V full scale differential
input swing. A stable 1.2V internal voltage reference
is provided, or the ADC12C080 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 ADC12C080 is available in a 32-lead WQFN
package and operates over the industrial temperature
range of −40°C to +85°C.
Connection Diagram
V_RN ¹
V_RP ²
V_A ³
AGND ⁴
V_IN+ ⁵
V_IN- ⁶
AGND ⁷
V_A ⁸
ADC12C080
(Top View)
*
24 _D6
23 _D5
22 _DRGND
21 _DRDY
20 _VDR
19 _D4
18 _D3
17 _D2
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 © 2006–2013, Texas Instruments Incorporated