參數(shù)資料
型號(hào)： AD9244BSTZ-40
廠(chǎng)商： Analog Devices Inc
文件頁(yè)數(shù)： 1/36頁(yè)
文件大小： 0K
描述： IC ADC 14BIT 40MSPS 48-LQFP
標(biāo)準(zhǔn)包裝： 1
位數(shù)： 14
采樣率（每秒）： 40M
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 300mW
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 48-LQFP
供應(yīng)商設(shè)備封裝： 48-LQFP（7x7）
包裝： 托盤(pán)
輸入數(shù)目和類(lèi)型： 2 個(gè)單端，單極；1 個(gè)差分，單極
14-Bit, 40 MSPS/65 MSPS A/D Converter
AD9244
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2005 Analog Devices, Inc. All rights reserved.
FEATURES
14-bit, 40 MSPS/65 MSPS ADC
Low power
550 mW at 65 MSPS
300 mW at 40 MSPS
On-chip reference and sample-and-hold
750 MHz analog input bandwidth
SNR > 73 dBc to Nyquist @ 65 MSPS
SFDR > 86 dBc to Nyquist @ 65 MSPS
Differential nonlinearity error = ±0.7 LSB
Guaranteed no missing codes over full temperature range
1 V to 2 V p-p differential full-scale analog input range
Single 5 V analog supply, 3.3 V/5 V driver supply
Out-of-range indicator
Straight binary or twos complement output data
Clock duty cycle stabilizer
Output-enable function
48-lead LQFP package
FUNCTIONAL BLOCK DIAGRAM
CLK–
VIN+
VIN–
DCS
AGND
DGND
VREF SENSE
OEB
D13 TO D0
OTR
DFS
AVDD
DRVDD
AD9244
SHA
TIMING
REFERENCE
OUTPUT
REGISTER
REF
GND
VR
CML
CLK+
10-STAGE
PIPELINE ADC
REFT REFB
14
02404-001
Figure 1.
APPLICATIONS
Communication subsystems (microcell, picocell)
Medical and high-end imaging equipment
Test and measurement equipment
GENERAL DESCRIPTION
The AD9244 is a monolithic, single 5 V supply, 14-bit,
40 MSPS/65 MSPS ADC with an on-chip, high performance
sample-and-hold amplifier (SHA) and voltage reference.
The AD9244 uses a multistage differential pipelined architec-
ture with output error correction logic to provide 14-bit
accuracy at 40 MSPS/65 MSPS data rates, and guarantees no
missing codes over the full operating temperature range.
The AD9244 has an on-board, programmable voltage reference.
An external reference can also be used to suit the dc accuracy
and temperature drift requirements of the application.
A differential or single-ended clock input controls all internal
conversion cycles. The digital output data can be presented in
straight binary or in twos complement format. An out-of-range
(OTR) signal indicates an overflow condition that can be used
with the most significant bit to determine low or high overflow.
Fabricated on an advanced CMOS process, the AD9244 is
available in a 48-lead LQFP and is specified for operation over
the industrial temperature range (–40°C to +85°C).
PRODUCT HIGHLIGHTS
1. Low Power—The AD9244, at 550 mW, consumes a fraction
of the power of currently available ADCs in existing high
speed solutions.
2. IF Sampling—The AD9244 delivers outstanding
performance at input frequencies beyond the first Nyquist
zone. Sampling at 65 MSPS with an input frequency of
100 MHz, the AD9244 delivers 71 dB SNR and 86 dB SFDR.
3. Pin Compatibility—The AD9244 offers a seamless
migration from the 12-bit, 65 MSPS AD9226.
4. On-Board Sample-and-Hold (SHA)—The versatile SHA
input can be configured for either single-ended or
differential inputs.
5. Out-of-Range (OTR) Indicator—The OTR output bit
indicates when the input signal is beyond the AD9244’s
input range.
6. Single Supply—The AD9244 uses a single 5 V power
supply, simplifying system power supply design. It also
features a separate digital output driver supply to
accommodate 3.3 V and 5 V logic families.
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