Design tool
Data sheet
OPA170
- Supply Range: 2.7 V to 36 V, ±1.35 V to ±18 V
- Low Noise: 19 nV/√Hz
- RFI Filtered Inputs
- Input Range Includes the Negative Supply
- Input Range Operates to Positive Supply
- Rail-to-Rail Output
- Gain Bandwidth: 1.2 MHz
- Low Quiescent Current: 110 µA per Amplifier
- High Common-Mode Rejection: 120 dB
- Low Bias Current: 15 pA (Maximum)
- Industry-Standard Packages and micro Packages Available
- Create a Custom Design Using the OPAx170 With the WEBENCH® Power Designer
The OPA170, OPA2170, and OPA4170 devices (OPAx170) are a family of 36-V, single-supply, low-noise operational amplifiers (op amps) that feature micro packages with the ability to operate on supplies ranging from 2.7 V (±1.35 V) to 36 V (±18 V). They offer good offset, drift, and bandwidth with low quiescent current. The single, dual, and quad versions all have identical specifications for maximum design flexibility.
Unlike most op amps, which are specified at only one supply voltage, the OPAx170 family of op amps is specified from 2.7 V to 36 V. Input signals beyond the supply rails do not cause phase reversal. The OPAx170 family is stable with capacitive loads up to 300 pF. The input can operate 100 mV below the negative rail and within 2 V of the positive rail for normal operation. Note that these devices can operate with full rail-to-rail input 100 mV beyond the positive rail, but with reduced performance within 2 V of the positive rail. The OPAx170 op amps are specified from –40°C to +125°C.
Technical documentation
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Evaluation board
DIP-ADAPTER-EVM — DIP adapter evaluation module
Speed up your op amp prototyping and testing with the DIP adapter evaluation module (DIP-ADAPTER-EVM), which provides a fast, easy and inexpensive way to interface with small surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them (...)
User guide: PDF
Evaluation board
DIYAMP-EVM — Universal do-it-yourself (DIY) amplifier circuit evaluation module
The DIYAMP-EVM is an evaluation module (EVM) family that provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits, enabling you to quickly evaluate design concepts and verify simulations. It is available in three industry-standard packages (SC70, SOT-23 and SOIC) (...)
Simulation model
OPA170 TINA-TI Reference Design (Rev. B)
SBOM467B.TSC (1103 KB) - TINA-TI Reference Design
Calculation tool
ANALOG-ENGINEER-CALC — Analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
Design tool
CIRCUIT0020 — Transimpedance Amplifier Circuit
The transimpedance operational-amplifier circuit configuration converts an input current source into an output voltage. The current-to-voltage gain is based on the feedback resistance. The circuit is able to maintain a constant voltage bias across the input source as the input current changes, (...)
Design tool
CIRCUIT060013 — Inverting amplifier with T-network feedback circuit
This design inverts the input signal, VIN, and applies a signal gain of 1000 V/V or 60 dB. The inverting amplifier with T-feedback network can be used to obtain a high gain without a small value for R4 or very large values for the feedback resistors.
Design tool
CIRCUIT060015 — Adjustable reference voltage circuit
This circuit combines an inverting and non-inverting amplifier to make a reference voltage adjustable from the negative of the input voltage up to the input voltage. Gain can be added to increase the maximum negative reference level.
Design tool
CIRCUIT060023 — Inverting summer circuit
This design sums (adds) and inverts two input signals, Vi1 and Vi2. The input signals typically come from lowimpedance sources because the input impedance of this circuit is determined by the input resistors, R1 and R2. The common-mode voltage of an inverting amplifier is equal to the voltage (...)
Design tool
CIRCUIT060074 — High-side current sensing with comparator circuit
This high-side, current sensing solution uses one comparator with a rail-to-rail input common mode range to create an over-current alert (OC-Alert) signal at the comparator output (COMP OUT) if the load current rises above 1 A. The OC-Alert signal in this implementation is active low. So when the (...)
Design tool
SBOC501 — Simulation for Transimpedance Amplifier
Supported products & hardware
Products
General-purpose op amps
Precision op amps (Vos<1mV)
Hardware development
Design tool
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool
TINA-TI — SPICE-based analog simulation program
TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
Reference designs
PMP23146 — 45-W high-power-density active clamp flyback with GaN reference design for server auxiliary power
This reference design is a GaN-based 45-W active-clamp flyback (ACF) targeting maximum power density. This supply is designed to provide auxiliary power in server and telecom power supply units (PSUs). The UCC28782 ACF controller and LMG2610 GaN half-bridge are used to drive a planar transformer (...)
Test report: PDF
Reference designs
TIDA-00559 — Combined Voltage/Current Output with Surge Protection Reference Design
TIDA-00559 provides a universal analog output (AO) for industrial sensors and transmitters. It is based on a 16-bit DAC and uses a single output. This common output is user-configurable for 0 V to 10 V or for 4 ma to 20 mA. Usage in harsh industrial environments is addressed by a dedicated (...)
Reference designs
TIDA-00476 — Highly Efficient, Versatile Bi-Directional Power Converter for Energy Storage and DC Home Solutions
TIDA-00476 is comprised of a single DC-DC power stage, which can work as a synchronous buck converter or a synchronous boost converter, enabling bidirectional power flow between DC power source and energy storage system. Operating in synchronous buck mode, the system works as a MPPT controlled (...)
Reference designs
PMP7174 — 24V/1.45A AC/DC Flyback PSU Optimized for Low AC Line Input Reference Design
This design is a compact, low AC line input (Maximum 130Vac) Flyback converter which provides a regulated and fully-isolated 24V@1.45A output. Featuring TI's LM5021 current mode controller working at 135kHz, the converter features fast start-up and delivers greater than 85% efficiency from 30-100% (...)
| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 8 | View options |
| SOT-23 (DBV) | 5 | View options |
| SOT-5X3 (DRL) | 5 | View options |
Ordering & quality
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Support & training
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