PGA280 零漂移、HV 可编程增益放大器

The PGA280 is a high-precision instrumentation amplifier with digitally-controllable gain and signal integrity test capability. This device offers low offset voltage, near-zero offset and gain drift, excellent linearity, and nearly no 1/f noise with superior common-mode and supply rejection to support high-resolution precision measurement. The 36V supply capability and wide, high-impedance input range comply with requirements for universal signal measurement.

Special circuitry prevents inrush currents from multiplexer (MUX) switching. In addition, the input switch matrix enables easy reconfiguration and system-level diagnostics—overload conditions are indicated.

The configurable general-purpose input/output (GPIO) offers several control and communication features

	PGA280
CMRR (Min) (dB)	130
Gain (V/V)	1/8, 1/4, 1/2, 1, 2, 4, 8, 16, 32, 64, 128
Vs (Min) (V)	10
Vs (Max) (V)	36
Number of Channels	4
Pin/Package	24TSSOP
Input Offset (+/-) (Max) (uV)	15
Input Offset Drift (+/-) (Max) (uV/Degrees Celsius)	0.2
Gain Error (+/-) (Max) (%)	0.15
Input Bias Current (+/-) (Max) (nA)	2
Noise at 1kHz (Typ) (nV/rt(Hz))	20
Quiescent Current (+/-) (Typ) (mA)	3
Settling Time to 0.01% (Typ) (us)	20
Non-Linearity (+/-) (Max) (%)	0.0001
Approx. Price (US$)	2.90 | 1ku
Common Mode Input Low (Min) (V)	-15.5
Common Mode Input High (Min) (V)	+15.5
Gain Error (Typ) (%)	0.03
Operating Temperature Range (C)	-40 to 125
Slew Rate (Typ) (V/us)	1

PGA280 特性

• WIDE INPUT RANGE: ±15.5V at ±18V SUPPLY
• BINARY GAIN STEPS: 128V/V to 1/8V/V
• ADDITIONAL SCALING FACTOR: 1V/V and 1 3/8 V/V
• LOW OFFSET VOLTAGE: 3uV at G = 128
• NEAR-ZERO LONG-TERM DRIFT OF OFFSET VOLTAGE
• NEAR-ZERO GAIN DRIFT: 0.5ppm/°C
• EXCELLENT LINEARITY: 1.5ppm
• EXCELLENT CMRR: 140dB
• HIGH INPUT IMPEDANCE
• VERY LOW 1/f NOISE
• DIFFERENTIAL SIGNAL OUTPUT
• OVERLOAD DETECTION
• INPUT CONFIGURATION SWITCH MATRIX
• WIRE BREAK TEST CURRENT
• EXPANDABLE SPI WITH CHECKSUM
• GENERAL-PURPOSE I/O PORT
• TSSOP-24 PACKAGE
• APPLICATIONS
  • HIGH-PRECISION SIGNAL INSTRUMENTATION
  • MULTIPLEXED DATA ACQUISITION

PGA280 芯片订购指南

器件	状态	温度	价格	封装 | 引脚	封装数量 | 封装载体	丝印标记
PGA280AIPW	ACTIVE	-40 to 125	3.50 | 1ku	TSSOP (PW) | 24	60 | TUBE
PGA280AIPWR	ACTIVE	-40 to 125	2.90 | 1ku	TSSOP (PW) | 24	2000 | LARGE T&R

PGA280 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
PGA280AIPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	PGA280AIPW	PGA280AIPW
PGA280AIPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	PGA280AIPWR	PGA280AIPWR

PGA280 应用技术支持与电子电路设计开发资源下载

1. PGA280 数据资料 dataSheet 下载.PDF
2. TI 德州仪器仪双电源产品选型与价格 . xls
3. 所选封装材料的热学和电学性质 (PDF 645 KB)
4. 高速数据转换 (PDF 1967 KB)
5. 使您的仪器放大器设计达到最佳效果 (zhct011.PDF, 897 KB)
6. A Numerical Protection Relay Solution (slaa466.HTM, 8 KB)
7. 在 PSPICE 中使用德州仪器 (TI) SPICE 模型 (zhca088.HTM, 8 KB)
8. PowerPADTM Thermally Enhanced Package (slma002g.HTM, 8 KB)
9. 运算放大器的单电源操作 (PDF 2174 KB)
10. Tuning in Amplifiers (PDF 44 KB)
11. Op Amp Performance Analysis (PDF 76 KB)
12. An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
13. Level Shifting Signals with Differential Amplifiers (PDF 23 KB)
14. Operational Amplifier Macromodels: A Comparison (PDF 59 KB)