Features
- 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
Description
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.
Parameters
| Attributes | Value |
|---|---|
| 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 |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TSSOP | 5.0 x 4.4 x 0.00 | 14 | 0.7 |
Application Block Diagrams
 | Continuous Glucose Monitor (CGM) for Closed-Loop Operation with Insulin Pump Continuous glucose monitor with detachable sensors, rechargeable battery, and precision tech for optimal glucose management. |
Additional Applications
- 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