特性
- Ultra-high precision front-end amplifier
- Zero-drift instrumentation amplifier
- Pin selectable 9 gain settings: G = 1 to 1,000
- Rail-to-rail input/output
- Single-ended output
- RFI filtered inputs improve EMI rejection
- Single supply: 2.5V to 5.5V
- Dual supply: ±1.25V to ±2.75V
- Low input offset: 5μV, Maximum
- Low input offset drift: 50nV/°C, Maximum
- High CMRR: 138dB, G = 100
- Low gain error: <0.4%, All Gains, Maximum
- Gain bandwidth: 2.3MHz
- Input voltage noise (0.1Hz to 10Hz): 0.4μVP-P
- Operating temperature range: -40 °C to +125 °C
描述
The ISL28533 5V zero-drift rail-to-rail input/output (RRIO) Programmable Gain Instrumentation Amplifiers (PGIA). This instrumentation amplifier features low offset, low noise, low gain error, and high CMRR. It is ideal for high precision applications over the wide industrial temperature range. This in-amp is designed with a unique 2-bit, 3-state logic interface that allows up to 9 selectable gain settings. The ISL2853x single-ended output amplifier includes an additional uncommitted zero-drift amplifier, useful to buffer the REF input or used as a precision amplifier.
产品参数
| 属性 | 值 |
|---|---|
| Channels (#) | 1 |
| Bandwidth (MHz) | 2.3 |
| Gain Min | 1 |
| Offset Voltage (Max) (mV) | 0.005 |
| IBIAS (nA) | 0.05 |
| IOUT (A) | 0.004 |
| CMRR (dB) | 138 |
| PSRR (db) | 140 |
| Rail-to-Rail Input | Yes |
| Rail-to-Rail Output | Yes |
| IS per Amp (mA) | 2.9 |
| Noise VN (nV/√Hz) | 17 |
| Single Supply Voltage Range (V) | 2.5 - 5.5 |
| Slew Rate (V/µs) | 0.8 |
| VS (Min) (V) | 2.5 |
| VS (Max) (V) | 5.5 |
| AVOL (dB) | 140 |
| Topology [Rail 1] | VFA |
| Enable | No |
| Gain Error / Measurement Error (Max) | 0.05 |
| Qualification Level | Standard |
封装选项
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TSSOP | 5.0 x 4.4 x 0.00 | 14 | 0.7 |
应用方框图
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使用胰岛素泵进行闭环操作的连续血糖监测仪（CGM）
连续血糖监测仪采用可拆卸传感器、可充电电池和精密技术，以实现最佳血糖管理。
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其他应用
- Pressure and strain gauge transducers
- Weight scales
- Flow sensors
- Biometric: ECG/blood glucose
- Temperature sensors
- Test and measurement
- Data acquisition systems
- Low ohmic current sense