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| 型号： | ALD2721SBL |
| 厂商： | Advanced Linear Devices Inc |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP R-R CMOS DUAL 14SOIC |
| 标准包装： | 56 |
| 系列： | EPAD® |
| 放大器类型： | 通用 |
| 电路数： | 2 |
| 输出类型： | 满摆幅 |
| 转换速率： | 1 V/µs |
| 增益带宽积： | 1MHz |
| 电流 - 输入偏压： | 0.01pA |
| 电压 - 输入偏移： | 50µV |
| 电流 - 电源： | 200µA |
| 电流 - 输出 / 通道： | 1mA |
| 电压 - 电源，单路/双路(±)： | 2 V ~ 10 V，±1 V ~ 5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC |
| 包装： | 管件 |
Rev 2.1 2011 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286
www.aldinc.com
GENERAL DESCRIPTION
The ALD2721E/ALD2721 is a dual monolithic rail-to-rail precision CMOS
operational amplifier with integrated user programmable EPAD (Electri-
cally Programmable Analog Device) based offset voltage adjustment. The
ALD2721E/ALD2721 is a dual version of the ALD1721E/ALD2721 opera-
tional amplifier. Each ALD2721E/ALD2721 operational amplifier features
individual user-programming offset voltage trimming, resulting in signifi-
cantly enhanced total system performance and user flexibility. EPAD
technology is an exclusive ALD design which has been refined for analog
applications where precision voltage trimming is necessary to achieve a
desired performance. It utilizes CMOS FETs as in-circuit elements for
trimming of offset voltage bias characteristics with the aid of a personal
computer under software control. Once programmed, the set parameters
are stored indefinitely within the device even after power-down. EPAD
offers the circuit designer a convenient and cost-effective trimming solution
for achieving the very highest amplifier/system performance.
The ALD2721E/ALD2721 dual operational amplifier features rail-to-rail
input and output voltage ranges, tolerance to over-voltage input spikes of
300mV beyond supply rails, capacitive loading up to 50pF, extremely low
input currents of 0.01pA typical, high open loop voltage gain, useful
bandwidth of 700KHz, slew rate of 0.7V/
s, and low typical supply current
of 200
A for both amplifiers.
BENEFITS
Eliminates manual and elaborate
system trimming procedures
Remote controlled automated trimming
In-System Programming capability
No external components
No internal clocking noise source
Simple and cost effective
Small package size
Extremely small total functional
volume size
Low system implementation cost
Micropower and Low Voltage
APPLICATIONS
Sensor interface circuits
Transducer biasing circuits
Capacitive and charge integration circuits
Biochemical probe interface
Signal conditioning
Portable instruments
High source impedance electrode
amplifiers
Precision Sample and Hold amplifiers
Precision current to voltage converter
Error correction circuits
Sensor compensation circuits
Precision gain amplifiers
Periodic In-system calibration
System output level shifter
KEY FEATURES
EPAD (Electrically Programmable Analog Device)
User programmable VOS trimmer
Computer-assisted trimming
Rail-to-rail input/output
Compatible with standard EPAD Programmer
Each amplifier VOS can be trimmed to a different VOS level
High precision through in-system circuit precision trimming
Reduces or eliminates VOS, PSRR, CMRR and TCVOS errors
System level “calibration” capability
Application Specific Programming mode
In-System Programming mode
Electrically programmable to compensate for external
component tolerances
Achieves 0.01pA input bias current and 35
V input offset
voltage simultaneously
Low voltage operation
1
2
3
4
5
6
7
11
12
13
14
8
9
10
VE 2A
VE 1A
V-
N/C
VE 2B
VE 1B
OUT B
OUT A
+IN A
-IN A
+IN B
-IN B
N/C
V+
PIN CONFIGURATION
TOP VIEW
SB, PB, DB PACKAGES
* N/C Pins are internally connected. Do not connect externally.
ORDERING INFORMATION
Operating Temperature Range
0
°C to +70°C0°C to +70°C
-55
°C to +125°C
14-Pin
Small Outline
Plastic Dip
CERDIP
Package (SOIC)
Package
ALD2721ESB
ALD2721EPB
ALD2721EDB
ALD2721SB
ALD2721PB
ALD2721DB
* Contact factory for high temperature versions.
eEPAD
TM
N
A
B
L
E
D
E
DUAL EPAD MICROPOWER CMOS OPERATIONAL AMPLIFIER
ALD2721E/ALD2721
ADVANCED
LINEAR
DEVICES, INC.
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