Rainbow-electronics MAX1215 Uživatelský manuál stáhnout pdf

General Description

The MAX1215 is a monolithic, 12-bit, 250Msps analog-

to-digital converter (ADC) optimized for outstanding

dynamic performance at high-IF frequencies up to

300MHz. The product operates with conversion rates

up to 250Msps while consuming only 975mW.

At 250Msps and an input frequency up to 250MHz, the

MAX1215 achieves a spurious-free dynamic range

(SFDR) of 72.4dBc. Its excellent signal-to-noise ratio

(SNR) of 66dB at 10MHz remains flat (within 2dB) for

input tones up to 300MHz. This ADC yields an excellent

low noise floor of -67.5dBFS, which makes it ideal for

wideband applications such as cable-head end

receivers and power-amplifier predistortion in cellular

base-station transceivers.

The MAX1215 requires a single 1.8V supply. The analog

input is designed for either differential or single-ended

operation and can be AC- or DC-coupled. The ADC also

features a selectable on-chip divide-by-2 clock circuit,

which allows the user to apply clock frequencies as high

as 340MHz. This helps to reduce the phase noise of the

input clock source. A low-voltage differential signal

(LVDS) sampling clock is recommended for best perfor-

mance. The converter’s digital outputs are LVDS com-

patible and the data format can be selected to be either

two’s complement or offset binary.

The MAX1215 is available in a 68-pin QFN package

with exposed paddle (EP) and is specified over the

industrial (-40°C to +85°C) temperature range.

See the Pin-Compatible Versions table for a complete

selection of 8-bit, 10-bit, and 12-bit high-speed ADCs in

this family.

Applications

Base-Station Power-Amplifier Linearization

Cable-Head End Receivers

Wireless and Wired Broadband Communication

Communications Test Equipment

Radar and Satellite Subsystems

Features

♦ 250Msps Conversion Rate

♦ Low Noise Floor of -67.5dBFS

♦ Excellent Low-Noise Characteristics

SNR = 65.5dB at f

= 100MHz

SNR = 65dB at f

= 250MHz

♦ Excellent Dynamic Range

SFDR = 70.7dBc at f

= 100MHz

SFDR = 72.4dBc at f

= 250MHz

♦ 65.4dB NPR for f

NOTCH

= 28.8MHz and a Noise

Bandwidth of 50MHz

♦ Single 1.8V Supply

♦ 1006mW Power Dissipation at f

SAMPLE

= 250MHz

and f

= 100MHz

♦ On-Chip Track-and-Hold Amplifier

♦ Internal 1.24V-Bandgap Reference

♦ On-Chip Selectable Divide-by-2 Clock Input

♦ LVDS Digital Outputs with Data Clock Output

♦ MAX1215 EV Kit Available

MAX1215

1.8V, 12-Bit, 250Msps ADC for

Broadband Applications

________________________________________________________________ Maxim Integrated Products 1

PART TEMP RANGE PIN-PACKAGE

MAX1215EGK -40°C to +85°C 68 QFN-EP*

Pin-Compatible Versions

Ordering Information

PART

RESOLUTION

(BITS)

SPEED GRADE

(Msps)

MAX1121 8 250

MAX1122 10 170

MAX1123 10 210

MAX1124 10 250

MAX1213 12 170

MAX1214 12 210

19-3653; Rev 0; 4/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

*EP = Exposed paddle.

EVALUATION KIT

AVAILABLE

Pin Configuration appears at end of data sheet.

1 2 3 4 5 6 ... 19 20

Broadband Applications 1

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Rainbow-electronics MAX1215 Uživatelský manuál

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