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參數(shù)資料
| 型號(hào)： | AD9237BCPZRL7-65 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT SGL 65MSPS 32LFCSP |
| 產(chǎn)品變化通告： | Product Discontinuance 27/Oct/2011 |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 65M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 3 |
| 功率耗散（最大）： | 190mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 32-LFCSP-VQ（5x5） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 2 個(gè)單端，單極；1 個(gè)差分，單極 |
12-Bit, 20 MSPS/40 MSPS/65 MSPS
3 V Low Power A/D Converter
Data Sheet
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
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
Fax: 781.461.3113 2005–2012 Analog Devices, Inc. All rights reserved.
FEATURES
Ultralow power
85 mW at 20 MSPS
135 mW at 40 MSPS
190 mW at 65 MSPS
SNR = 66 dBc to Nyquist at 65 MSPS
SFDR = 80 dBc to Nyquist at 65 MSPS
DNL = ±0.7 LSB
Differential input with 500 MHz bandwidth
Flexible analog input: 1 V p-p to 4 V p-p range
Offset binary, twos complement, or gray code data formats
Output enable pin
2-step power-down
Full power-down and sleep mode
Clock duty cycle stabilizer
APPLICATIONS
Ultrasound and medical imaging
Battery-powered instruments
Hand-held scope meters
Low cost digital oscilloscopes
Low power digital still cameras and copiers
Low power communications
FUNCTIONAL BLOCK DIAGRAM
SHA
VIN+
VIN–
DRVDD
CLK
PDWN
MODE
CLOCK
DUTY CYCLE
STABILIZER
MODE
SELECT
DGND
OTR
D11
D0
AVDD
MDAC1
CORRECTION LOGIC
OUTPUT BUFFERS
REF
SELECT
AGND
0.5V
VREF
SENSE
AD9237
05455-001
REFT
REFB
MODE2
A/D
4
15
12
3
OE
10-STAGE
1 1/2-BIT
PIPELINE
Figure 1.
GENERAL DESCRIPTION
The AD9237 is a family of monolithic, single 3 V supply, 12-bit,
20 MSPS/40 MSPS/65 MSPS analog-to-digital converters
(ADC). This family features a high performance sample-and-
hold amplifier (SHA) and voltage reference. The AD9237 uses a
multistage differential pipelined architecture with output error
correction logic to provide 12-bit accuracy at 20 MSPS/
40 MSPS/65 MSPS data rates and guarantees no missing codes
over the full operating temperature range.
With significant power savings over previously available ADCs,
the AD9237 is suitable for applications in imaging and medical
ultrasound.
Fabricated on an advanced CMOS process, the AD9237 is
available in a 32-lead LFCSP and is specified over the industrial
temperature range (40°C to +85°C).
PRODUCT HIGHLIGHTS
1. Operating at 65 MSPS, the AD9237 consumes a low 190 mW
at 65 MSPS, 135 mW at 40 MSPS, and 85 mW at 20 MSPS.
2. Power scaling reduces the operating power further when
running at lower speeds.
3. The AD9237 operates from a single 3 V power supply and
features a separate digital output driver supply to
accommodate 2.5 V and 3.3 V logic families.
4. The patented SHA input maintains excellent performance
for input frequencies beyond Nyquist and can be configured
for single-ended or differential operation.
5. The AD9237 is optimized for selectable and flexible input
ranges from 1 V p-p to 4 V p-p.
6. An output enable pin allows for multiplexing of the outputs.
7. Two-step power-down supports a standby mode in addition
to a power-down mode.
8. The OTR output bit indicates when the signal is beyond the
selected input range.
9. The clock duty cycle stabilizer (DCS) maintains converter
performance over a wide range of clock pulse widths.
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