OPA2145IDR
Operational Amplifiers - Op Amps Dual, 5.5-MHz, high slew rate, low-noise, low-power, RRO precision JFET operational amplifier 8-SOIC -40 to 125
Inventory:7,525
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Part Number : OPA2145IDR
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Package/Case : SOIC (D)-8
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Brands : TI
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Components Categories : Instrumentation, OP Amps, Buffer Amps
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Datesheet : OPA2145IDR DataSheet (PDF)
Overview of OPA2145IDR
The OPA145 and OPA2145 (OPAx145) devices are part of a family of low-power JFET input amplifier that have excellent drift, low current noise, and pico-ampere input bias current. These features make the OPAx145 an excellent choice for amplifying small signals from high-impedance sensors.
The rail-to-rail output swing interfaces to modern, single-supply, precision, analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). In addition, the input range that includes V– allows designers to simplify power management and take advantage of the single-supply, low-noise JFET architecture.
Key Features
- Best bandwidth and slew-rate-to-power ratio:
- gain-bandwidth product: 5.5 MHz
- Slew rate: 20 V/µs
- Low supply current: 475 µA (maximum)
- High precision:
- Very low offset: 150 µV (maximum)
- Very low offset drift: 1 µV/°C (maximum)
- Low input bias current: 2 pA
- Excellent noise performance:
- Very low voltage noise: 7 nV/√Hz
- Very low current noise: 0.8 fA/√ Hz
- Input-voltage range includes V– supply
- Single-supply operation: 4.5 V to 36 V
- Dual-supply operation: ±2.25 V to ±18 V
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Number of channels | 2 | Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) | 36 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) | 4.5 | Vos (offset voltage at 25°C) (max) (mV) | 0.15 |
| GBW (typ) (MHz) | 5.5 | Slew rate (typ) (V/µs) | 20 |
| Rail-to-rail | Out | Offset drift (typ) (µV/°C) | 0.4 |
| Iq per channel (typ) (mA) | 0.445 | Vn at 1 kHz (typ) (nV√Hz) | 7 |
| CMRR (typ) (dB) | 140 | Rating | Catalog |
| Operating temperature range (°C) | -40 to 125 | Input bias current (max) (pA) | 10 |
| Iout (typ) (A) | 0.02 | Architecture | FET |
| Input common mode headroom (to negative supply) (typ) (V) | -0.1 | Input common mode headroom (to positive supply) (typ) (V) | -3.5 |
| Output swing headroom (to negative supply) (typ) (V) | 0.1 | Output swing headroom (to positive supply) (typ) (V) | -0.1 |
| THD + N at 1 kHz (typ) (%) | 0.0001 |
Warranty & Returns
Warranty, Returns, and Additional Information
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QA & Return Policy
Parts Quality Guarantee: 365 days
Returns for refund: within 90 days
Returns for Exchange: within 90 days
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Shipping and Package
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