1FEATURES

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)

KEY SPECIFICATIONS

? Resolution: 12 Bits

? Conversion Rate: 105 MSPS

? SNR (fIN = 170 MHz): 69 dBFS (Typ)

? SFDR (fIN = 170 MHz): 83 dBFS (Typ) pin?

Full Power Bandwidth: 1 GHz (Typ)

? Power Consumption

– 690 mW (Typ), V A = 3.0V

– 800 mW (Typ), VA = 3.3V

APPLICATIONS

? High IF Sampling Receivers

? Wireless Base Station Receivers

? Test and Measurement Equipment

? Communications Instrumentation

? Portable Instrumentation

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 sampleand-

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.