Datasheet > MXO45-80

MXO45-80

更新时间： 2024-11-07 12:34:19

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
24页	776K
描述
14-Bit, 80 MSPS/105 MSPS A/D Converter

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MXO45-80 数据手册

14-Bit, 80 MSPS/105 MSPS

A/D Converter

AD6645

generation in a wideband ADC family, preceded by the AD9042

(12-bit, 41 MSPS), the AD6640 (12-bit, 65 MSPS, IF sampling),

and the AD6644 (14-bit, 40 MSPS/65 MSPS).

FEATURES

SNR = 75 dB, f_IN15 MHz, up to 105 MSPS

SNR = 72 dB, f_IN200 MHz, up to 105 MSPS

SFDR = 89 dBc, f_IN70 MHz, up to 105 MSPS

100 dBFS multitone SFDR

IF sampling to 200 MHz

Sampling jitter: 0.1 ps

1.5 W power dissipation

Differential analog inputs

Pin compatible to AD6644

Twos complement digital output format

3.3 V CMOS compatible

Designed for multichannel, multimode receivers, the AD6645 is

part of the Analog Devices, Inc., SoftCell® transceiver chipset.

The AD6645 maintains 100 dB multitone, spurious-free dynamic

range (SFDR) through the second Nyquist band. This breakthrough

performance eases the burden placed on multimode digital

receivers (software radios) that are typically limited by the ADC.

Noise performance is exceptional; typical signal-to-noise ratio

(SNR) is 74.5 dB through the first Nyquist band.

The AD6645 is built on the Analog Devices extra fast

complementary bipolar (XFCB) process and uses an innovative,

multipass circuit architecture. Units are available in thermally

enhanced 52-lead PowerQuad 4 (LQFP_PQ4) and 52-lead

exposed pad (TQFP_EP) packages specified from −40°C to

+85°C at 80 MSPS and −10°C to +85°C at 105 MSPS.

Data-ready for output latching

APPLICATIONS

Multichannel, multimode receivers

Base station infrastructures

AMPS, IS-136, CDMA, GSM, W-CDMA

Single channel digital receivers

Antenna array processing

Communications instrumentation

Radars, infrared imaging

Instrumentation

PRODUCT HIGHLIGHTS

1. IF Sampling. The AD6645 maintains outstanding ac

performance up to input frequencies of 200 MHz, suitable

for multicarrier 3G wideband cellular IF sampling receivers.

2. Pin Compatibility. The ADC has the same footprint and

pin layout as the AD6644 14-bit, 40 MSPS/65 MSPS ADC.

3. SFDR Performance and Oversampling. Multitone SFDR

performance of 100 dBFS can reduce the requirements of

high end RF components and allows the use of receive

signal processors, such as the AD6620, AD6624/AD6624A,

or AD6636.

GENERAL DESCRIPTION

The AD6645 is a high speed, high performance, monolithic 14-bit

analog-to-digital converter (ADC). All necessary functions,

including track-and-hold (T/H) and reference, are included on the

chip to provide a complete conversion solution. The AD6645

provides CMOS-compatible digital outputs. It is the fourth

FUNCTIONAL BLOCK DIAGRAM

AD6645

AIN

TH1

TH2

TH3

TH4

TH5

ADC3

ADC1

DAC1

ADC2

DAC2

VREF

2.4V

ENCODE

INTERNAL

TIMING

DIGITAL ERROR CORRECTION LOGIC

GND

DMID OVR

DRY

D13

MSB

D12

D11

D10

LSB

Figure 1.

Rev. D

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700 www.analog.com

12 3 4 5 6 7...24

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