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| 型号： | PGA308AIDRKT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQCC10 |
| 封装： | 3 X 4 MM, GREEN, PLASTIC, SON-10 |
| 文件页数： | 1/29页 |
| 文件大小： | 962K |
| 代理商： | PGA308AIDRKT |
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PGA308
PGA308
Fault
Monitor
Front-End
GainSelect
V
IN1
5
6
3
V
REF
V
S
V
IN2
Auto-Zero
PGA
7-Bit+Sign
DAC
PGA308
16-Bit
DAC
Output
Amplifier
NOTE: (1)Ref=V
orV selectable.
REF
S
V
EXC
V
REF
V
FB
4
10
1
2
8
7
9
V
OUT
V
SJ
GND
Input
Mux
Scale
Limit
1W
DigitalInterface
(One-Wire)
OTP
(7Banks)
RAM
CoarseOffset
V
REF
V
REF
16-Bit
DAC
Ref
(1)
Ref
(1)
FineOffset
OutputGain
FineGain
Output
Gain
Select
D
OUT
Select
3-Bit
DAC
Underscale
3-Bit
DAC
Overscale
D
/V
OUT
CLAMP
Bridge
Sensor
www.ti.com
SBOS440B – JULY 2008 – REVISED DECEMBER 2010
Single-Supply, Auto-Zero Sensor Amplifier
with Programmable Gain and Offset
Check for Samples: PGA308
1
FEATURES
DESCRIPTION
2
Digital Calibration for Bridge Sensors
The PGA308 is a programmable analog sensor signal
conditioner. The analog signal path amplifies the
Offset Select: Coarse and Fine
sensor signal and provides digital calibration for offset
Gain Select: Coarse and Fine
and gain. Calibration is done via the 1W pin, a digital
Bridge Fault Monitor
One-Wire,
UART-compatible
interface.
For
Input Mux for Lead Swap
three-terminal
sensor
modules,
1W
may
be
connected to VOUT and the assembly programmed
Over/Under Scale Limits
through the VOUT pin. Gain and offset calibration
DOUT/ VOUT Clamp Function
parameters are stored onboard in seven banks of
Seven Banks OTP Memory
one-time
programmable
(OTP)
memory.
The
power-on
reset
(POR)
OTP
bank
may
be
One-Wire Digital UART Interface
programmed a total of four times.
Operating Voltage: +2.7V to +5.5V
The all-analog signal path contains a 2×2 input
Temperature Range: –40°C to +125°C
multiplexer (mux) to allow electronic sensor lead
MSOP-10 and 3mm × 4mm DFN-10 Packages
swapping, a coarse offset adjust, an auto-zero
programmable gain instrumentation amplifier (PGA),
APPLICATIONS
a fine gain adjust, a fine offset adjust, and a
programmable gain output amplifier. Fault monitor
Bridge Sensors
circuitry
detects
and
signals
sensor
burnout,
Remote 4-20mA Transmitters
overload,
and
system
fault
conditions.
Strain, Load, Weigh Scales
Over/under-scale limits provide additional means for
Automotive Sensors
system level diagnostics. The dual-use DOUT/VCLAMP
pin can be used as a programmable digital output or
EVALUATION TOOLS
as a VOUT over-voltage clamp.
PGA308EVM (Hardware and Software)
For detailed application information, see the PGA308
–
Calibration and Configuration
User's Guide (SBOU069) available for download at
–
Sensor Emulation
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright 2008–2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PGA308AQDGSRQ1 | 功能描述:特殊用途放大器 AC Sgl Supply,Auto Zero Sensor Amp RoHS:否 制造商:Texas Instruments 通道数量:Single 共模抑制比（最小值）: 输入补偿电压: 工作电源电压:3 V to 5.5 V 电源电流:5 mA 最大功率耗散: 最大工作温度:+ 70 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-20 封装:Reel |
| PGA308-DIE | 制造商:TI 制造商全称:Texas Instruments 功能描述:SINGLE-SUPPLY, AUTO-ZERO SENSOR AMPLIFIER WITH PROGRAMMABLE GAIN AND OFFSET |
| PGA308EVM | 功能描述:放大器 IC 开发工具 PGA308EVM Eval Mod RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| PGA308-Q1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Single-Supply, Auto-Zero Sensor Amplifier with Programmable Gain and Offset |
| PGA308TDD1 | 制造商:Texas Instruments 功能描述:IC PROG SENSOR |
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