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AD7264BCPZ

更新时间: 2024-02-18 05:00:23
品牌 Logo 应用领域
亚德诺 - ADI 转换器模数转换器
页数 文件大小 规格书
32页 1245K
描述
1 MSPS, 14-Bit, Simultaneous Sampling SAR ADC with PGA and Four Comparators

AD7264BCPZ 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:QFP
包装说明:MS-026ABC, TQFP-48针数:48
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.69
最大模拟输入电压:2.5 V最小模拟输入电压:
最长转换时间:0.53 µs转换器类型:ADC, SUCCESSIVE APPROXIMATION
JESD-30 代码:S-PQFP-G48长度:7 mm
最大线性误差 (EL):0.0122%模拟输入通道数量:2
位数:14功能数量:2
端子数量:48最高工作温度:105 °C
最低工作温度:-40 °C输出位码:2'S COMPLEMENT BINARY
输出格式:SERIAL封装主体材料:PLASTIC/EPOXY
封装代码:TFQFP封装等效代码:TQFP48,.35SQ
封装形状:SQUARE封装形式:FLATPACK, THIN PROFILE, FINE PITCH
峰值回流温度(摄氏度):260电源:3/5,5 V
认证状态:Not Qualified采样速率:1 MHz
采样并保持/跟踪并保持:TRACK座面最大高度:1.2 mm
子类别:Analog to Digital Converters标称供电电压:5 V
表面贴装:YES温度等级:INDUSTRIAL
端子形式:GULL WING端子节距:0.5 mm
端子位置:QUAD处于峰值回流温度下的最长时间:40
宽度:7 mmBase Number Matches:1

AD7264BCPZ 数据手册

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1 MSPS, 14-Bit, Simultaneous Sampling  
SAR ADC with PGA and Four Comparators  
AD7264  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
AV  
V
A
CC  
REF  
Dual, simultaneous sampling, 14-bit, 2-channel ADC  
True differential analog inputs  
Programmable gain stage: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16,  
×24, ×32, ×48, ×64, ×96, ×128  
REF  
AD7264  
BUF  
14-BIT  
SUCCESSIVE  
APPROXIMATION  
ADC  
V
+
A
OUTPUT  
DRIVERS  
D
A
PGA  
T/H  
OUT  
Throughput rate per ADC  
V
A
1 MSPS for AD7264  
500 kSPS for AD7264-5  
SCLK  
CAL  
CS  
Analog input impedance: >1 GΩ  
Wide input bandwidth  
−3 dB bandwidth: 1.7 MHz at gain = 2  
4 on-chip comparators  
REFSEL  
CONTROL  
LOGIC  
G0  
G1  
G2  
G3  
V
DRIVE  
SNR: 78 dB typical at gain = 2, 71 dB typical at gain = 32  
Device offset calibration  
System gain calibration  
14-BIT  
SUCCESSIVE  
APPROXIMATION  
ADC  
V
V
+
B
OUTPUT  
DRIVERS  
D
B
T/H  
PGA  
OUT  
B
PD0/D  
PD1  
PD2  
IN  
On-chip reference: 2.5 V  
BUF  
−40°C to +105°C operation  
V
B
REF  
High speed serial interface  
C
_C V  
B CC  
A
C
+
A
Compatible with SPI, QSPI™, MICROWIRE™, and DSP  
48-lead LFCSP and LQFP packages  
OUTPUT  
C
C
A
OUT  
DRIVERS  
C
C
C
+
A
B
B
COMP  
OUTPUT  
DRIVERS  
B
OUT  
GENERAL DESCRIPTION  
COMP  
C
_C _GND  
A
B
The AD7264 is a dual, 14-bit, high speed, low power, successive  
approximation ADC that operates from a single 5 V power supply  
and features throughput rates of up to 1 MSPS per on-chip  
ADC (500 kSPS for the AD7264-5). Two complete ADC func-  
tions allow simultaneous sampling and conversion of two  
channels. Each ADC is preceded by a true differential analog  
input with a PGA. There are 14 gain settings available: ×1, ×2,  
×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128.  
C
_C V  
D CC  
C
C
C
C
C
+
+
C
C
D
D
OUTPUT  
DRIVERS  
C
C
C
D
OUT  
COMP  
OUTPUT  
DRIVERS  
OUT  
COMP  
C
_C _GND  
C
D
AGND  
DGND  
Figure 1.  
The AD7264 contains four comparators. Comparator A and  
Comparator B are optimized for low power, whereas Comparator C  
and Comparator D have fast propagation delays. The AD7264  
features a calibration function to remove any device offset error  
and programmable gain adjust registers to allow for input path  
(for example, sensor) offset and gain compensation. The AD7264  
has an on-chip 2.5 V reference that can be disabled if an external  
reference is preferred. The AD7264 is available in 48-lead LFCSP  
and LQFP packages.  
PRODUCT HIGHLIGHTS  
1. Integrated PGA with a variety of flexible gain settings to  
allow detection and conversion of low level analog signals.  
2. Each PGA is followed by a dual simultaneous sampling  
ADC, featuring throughput rates of 1 MSPS per ADC  
(500 kSPS for the AD7264-5). The conversion result of  
both ADCs is simultaneously available on separate data  
lines or in succession on one data line if only one serial  
port is available.  
3. Four integrated comparators that can be used to count  
signals from pole sensors in motor control applications.  
4. Internal 2.5 V reference.  
The AD7264 is ideally suited for monitoring small amplitude  
signals from a variety of sensors. The parts include all the  
functionality needed for monitoring the position feedback signals  
from a variety of analog encoders used in motor control systems.  
Rev. A  
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  
Fax: 781.461.3113  
www.analog.com  
©2008 Analog Devices, Inc. All rights reserved.  
 

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