INA350
SBOSAA0A – NOVEMBER 2021 – REVISED DECEMBER 2021
INA350 Cost and Size Optimized, Low Power, 1.8-V to 5.5-V Selectable Gain
Instrumentation Amplifier
1 Features
3 Description
•
•
Ideal for size, cost, and power conscious designs
Selectable gain options
INA350 is a selectable-gain instrumentation amplifier
that offers four gain options across INA350ABS and
INA350CDS variants available in small packages.
INA350ABS has gain options of 10 or 20 and
INA350CDS has gain options of 30 or 50. These
gain options can be selected by toggling the gain
select (GS) pin. INA350 is ideal for bridge-type
sensing and for differential to single-ended conversion
applications.
– G = 10 or G = 20 (INA350ABS)
– G = 30 or G = 50 (INA350CDS)
Space saving ultra-small package options
– 10-pin X2QFN (RUG) – 3 mm2
– 8-pin WSON (DSG) – 4 mm2
•
•
– 8-pin SOT23-THN (DDF) – 4.64 mm2
Optimized performance for 10-bit to 14-bit systems
– CMRR: 95 dB (typ) across all gains
– Offset voltage: 0.2 mV (typ) across all gains
– Gain error (typ):
Built with precision matched integrated resistors,
INA350 saves on BOM costs, pick-and-place machine
handling costs, and board space by removing
the need for precise or closely-matched external
resistors. The device interface directly to low-speed,
10-bit to 14-bit, analog-to-digital converters (ADC)
and is ideal for replacing discrete implementation
of instrumentation amplifiers built with commodity
amplifiers and discrete resistors.
•
•
0.05% for G = 10; 0.06% for G = 20
0.075% for G = 30; 0.082% for G = 50
•
•
•
•
•
•
Bandwidth: 100 kHz for G = 10 (typ)
Drives 500 pF with less than 20% overshoot (typ)
Optimized quiescent current: 100 µA (typ)
Shutdown option for power conscious applications
Supply range: 1.8 V (±0.9 V) to 5.5 V (±2.75 V)
Specified temperature range: –40°C to 125°C
Designed with the three-amplifier architecture, INA350
is optimized for delivering performance. It achieves
85 dB of minimum CMRR and 0.6% of maximum
gain error, along with 1.2 mV of maximum offset
across all gain options, while consuming just 125 µA
of maximum quiescent current. It has an integrated
shutdown option to turn off the amplifier when idle
for additional power savings in battery powered
applications.
2 Applications
•
•
•
•
•
•
•
•
Bridge network sensing
Differential to single-ended conversion
Weigh scale
Analog input module
Flow transmitter
Wearable fitness and activity monitor
Blood glucose monitor
Pressure and temperature sensing
Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
2.00 mm × 2.00 mm
1.60 mm × 2.90 mm
1.50 mm × 2.00 mm
V+
WSON (8)
INA350ABS,
SOT-23 (8)
INA350CDS(3)
IN
60 k
+
–
60 k
X2QFN (10)(2)
(1) For all available packages, see the package option
addendum at the end of the data sheet.
(2) This package is preview only.
–
+
90 k / 145 k
90 k / 145 k
RG
GS
OUT
REF
(3) INA350CDS part number is on preview.
–
+
60 k
60 k
+IN
_____
SHDN
V
Note: 90 kΩ for INA350ABS and 145 kΩ for INA350CDS
Simplified Internal Schematic
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
5秒后页面跳转
TLP250光耦合器：资料手册参数分析
DA14580 低功耗蓝牙系统级芯片(SoC)：资料手册参数分析
INA226 高精度电流和功率监控器：资料手册参数分析
SI2302 N沟道MOSFET：资料手册参数分析
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
