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| 型号： | AD9245BCPZRL7-20 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT SGL 20MSPS 32LFCSP |
| 标准包装： | 1,500 |
| 位数： | 14 |
| 采样率（每秒）： | 20M |
| 数据接口： | 并联 |
| 转换器数目： | 3 |
| 功率耗散（最大）： | 90mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-VQ（5x5） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个单端，单极；1 个差分，单极 |
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14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS,
3 V A/D Converte
r
Data Sheet
AD9245
Rev. E
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
2013 Analog Devices, Inc. All rights reserved.
FEATURES
Single 3 V supply operation (2.7 V to 3.6 V)
SNR = 72.7 dBc to Nyquist
SFDR = 83.0 dBc to Nyquist
Low power
366 mW at 80 MSPS
300 mW at 65 MSPS
165 mW at 40 MSPS
90 mW at 20 MSPS
Differential input with 500 MHz bandwidth
On-chip reference and sample-and-hold
DNL = ±0.5 LSB
Flexible analog input: 1 V p-p to 2 V p-p range
Offset binary or twos complement data format
Clock duty-cycle stabilizer
APPLICATIONS
Medical imaging equipment
IF sampling in communications receivers
WCDMA, CDMA-One, CDMA-2000, and TDS-CDMA
Battery-powered instruments
Hand-held scopemeters
Spectrum analyzers
Power-sensitive military applications
GENERAL DESCRIPTION
The AD9245 is a monolithic, single 3 V supply, 14-bit,
20 MSPS/40 MSPS/65 MSPS/80 MSPS analog-to-digital
converter (ADC) featuring a high performance sample-and-
hold amplifier (SHA) and voltage reference. The AD9245 uses a
multistage differential pipelined architecture with output error
correction logic to provide 14-bit accuracy and guarantee no
missing codes over the full operating temperature range.
The wide bandwidth, truly differential SHA allows a variety of
user-selectable input ranges and common modes, including
single-ended applications. It is suitable for multiplexed systems
that switch full-scale voltage levels in successive channels and
for sampling single-channel inputs at frequencies well beyond
the Nyquist rate. Combined with power and cost savings over
previously available analog-to-digital converters, the AD9245 is
suitable for applications in communications, imaging, and
medical ultrasound.
FUNCTIONAL BLOCK DIAGRAM
03583-001
DRVDD
AVDD
AGND
0.5V
CLK
PDWN
MODE DGND
OTR
VIN+
VIN–
REFT
REFB
AD9245
VREF
SENSE
SHA
A/D
MDAC1
4
16
14
3
A/D
8-STAGE
1 1/2-BIT PIPELINE
REF
SELECT
CLOCK
DUTY CYCLE
STABILIZER
MODE
SELECT
CORRECTION LOGIC
OUTPUT BUFFERS
D13 (MSB)
D0 (LSB)
Figure 1.
A single-ended clock input is used to control all internal con-
version cycles. A duty cycle stabilizer (DCS) compensates for
wide variations in the clock duty cycle while maintaining
excellent overall ADC performance. The digital output data is
presented in straight binary or twos complement formats. 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
AD9245 is available in a 32-lead LFCSP and is specified over
the industrial temperature range (–40°C to +85°C).
PRODUCT HIGHLIGHTS
1. The AD9245 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.
2. The patented SHA input maintains excellent performance for
input frequencies up to 100 MHz and can be configured for
single-ended or differential operation.
3. The AD9245 is pin-compatible with the AD9215, AD9235,
and AD9236. This allows a simplified migration from 10 bits
to 14 bits and 20 MSPS to 80 MSPS.
4. The clock DCS maintains overall ADC performance over a
wide range of clock pulse widths.
5. The OTR output bit indicates when the signal is beyond the
selected input range.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD9245BCPZRL7-202 | 制造商:AD 制造商全称:Analog Devices 功能描述:14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter |
| AD9245BCPZRL7-40 | 功能描述:IC ADC 14BIT SGL 40MSPS 32LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD9245BCPZRL7-402 | 制造商:AD 制造商全称:Analog Devices 功能描述:14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter |
| AD9245BCPZRL7-65 | 功能描述:IC ADC 14BIT SGL 65MSPS 32LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD9245BCPZRL7-652 | 制造商:AD 制造商全称:Analog Devices 功能描述:14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter |
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