MAX1215 データシートの表示（PDF） - Maxim Integrated

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MAX1215

1.8V, 12-Bit, 250Msps ADC for Broadband Applications

Maxim Integrated 

19-3653; Rev 1; 9/06

EVAALVUAAILTAIOBNLEKIT

1.8V, 12-Bit, 250Msps ADC for

Broadband Applications

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 (with or without input buffers).

Applications

Base-Station Power-Amplifier Linearization

Cable-Head End Receivers

Wireless and Wired Broadband Communication

Communications Test Equipment

Radar and Satellite Subsystems

Pin Configuration appears at end of data sheet.

Features

♦ 250Msps Conversion Rate

♦ Low Noise Floor of -67.5dBFS

♦ Excellent Low-Noise Characteristics

SNR = 65.5dB at fIN = 100MHz

SNR = 65dB at fIN = 250MHz

♦ Excellent Dynamic Range

SFDR = 70.7dBc at fIN = 100MHz

SFDR = 72.4dBc at fIN = 250MHz

♦ 65.4dB NPR for fNOTCH = 28.8MHz and a Noise

Bandwidth of 50MHz

♦ Single 1.8V Supply

♦ 1006mW Power Dissipation at fSAMPLE = 250MHz

and fIN = 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

Ordering Information

PART

TEMP RANGE

MAX1215EGK-D

-40°C to +85°C

MAX1215EGK+D -40°C to +85°C

*EP = Exposed paddle.

+Denotes lead-free package.

D = Dry pack.

PIN-PACKAGE

68 QFN-EP*

68 QFN-EP*

Pin-Compatible Versions

PART

MAX1121

MAX1122

MAX1123

MAX1124

MAX1213

MAX1214

MAX1215

MAX1213N

MAX1214N

MAX1215N

RESOLUTION

(BITS)

8

10

10

10

12

12

12

12

12

12

SPEED GRADE

(Msps)

250

170

210

250

170

210

250

170

210

250

ON-CHIP

BUFFER

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

________________________________________________________________ Maxim Integrated Products 1

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.

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