参数资料
型号: LTC2055HDD
厂商: Linear Technology
文件页数: 1/16页
文件大小: 0K
描述: IC OPAMP ZERO DRIFT DUAL LP 8DFN
标准包装: 121
放大器类型: 断路器(零漂移)
电路数: 2
输出类型: 满摆幅
转换速率: 0.5 V/µs
增益带宽积: 500kHz
电流 - 输入偏压: 3pA
电压 - 输入偏移: 0.5µV
电流 - 电源: 130µA
电压 - 电源,单路/双路(±): 2.7 V ~ 6 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-WFDFN 裸露焊盘
供应商设备封装: 8-DFN-EP(3x3)
包装: 管件
LTC2054/LTC2055
1
20545fc
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Single/Dual Micropower
Zero-Drift Operational Ampliers
The LTC2054/LTC2055 are low power, low noise, single/
dual, zero-drift operational ampliers with an extended
temperature version (LTC2054MP) that has guaranteed
specications from –55°C to 150°C. They are available
in TSOT-23 (ThinSOT) and MS8 packages. For space
limited applications, the LTC2055 is also available in a
3mm × 3mm × 0.8mm dual ne pitch leadless package
(DFN). They operate from a single 2.7V minimum supply
and support ± 5V applications. The current consumption
is typically 150μA for the LTC2054 and 130μA/amp for
the LTC2055.
The LTC2054/LTC2055, despite their miniature size, feature
uncompromising DC performance. The maximum input
offset voltage and offset drift are 3.0μV and 30nV/°C over
the –40°C to 85°C industrial temperature range. The almost
zero DC offset and drift are supported with a power supply
rejection ratio (PSRR) and common mode rejection ratio
(CMRR) of 130dB (typ).
The input common mode voltage ranges from the negative
supply up to typically 0.5V below the positive supply. The
open-loop gain is typically 140dB. The LTC2054/LTC2055
also feature a 1.6μVP-P DC to 10Hz noise and a 500kHz
gain-bandwidth product.
–48V Low Side Precision Current Sense
n Supply Current 150μA (Max per Amplier)
Guaranteed from –40°C to 85°C
n Offset Voltage 3μV (Max, –40°C to 85°C)
n Offset Voltage Drift 30nV/°C (Max, –40°C to 85°C)
n Guaranteed Specications from –55°C to 150°C
(LTC2054MP)
n Common Mode Input Range from Vto V+ – 0.5V
n Output Swings Rail-to-Rail
n Voltage Gain: 140dB (Typ)
n PSRR and CMRR: 130dB (Typ)
n Input Bias Current: 1pA (Typ, 25°C)
n Noise: 1.6μVP-P (0.01Hz to 10Hz Typ)
n Supply Operation:
2.7V to 6V (LTC2054/LTC2055)
2.7V to ±5.5V (LTC2054HV/LTC2055HV)
n Low Prole (1mm) TSOT-23, MS8 and
3mm × 3mm × 0.8mm DFN Packages
n Thermocouple Ampliers
n Electronic Scales
n Medical Instrumentation
n Strain Gauge Ampliers
n High Resolution Data Acquisition
n DC Accurate RC Active Filters
n Low Side Current Sense
n Battery-Powered Systems
VOS vs Temperature
TEMPERATURE (°C)
V
OS
(μV)
20545 TA01b
10
8
6
4
2
0
–2
–4
–6
–8
–10
–55
155
15
50
85
120
–20
VS = ±5V
+
0.01μF
0.1μF
0.003Ω
1% 3W
39k
BZX84C5V1
VZ = 5.1
–48V SUPPLY
ISENSE,VSENSE
+
100Ω
1%
LTC2054
20545 TA01
+
10k
1%
5V
VOUT = 100VSENSE
LTC2054
–48V LOAD
Q1
ZETEX
ZVN3320F
100Ω
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
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