Overview
The TPS7A3001DRBT is a part of the TPS7A30 family of negative, high-voltage, ultralow-noise linear regulators produced by Texas Instruments. These regulators are designed using bipolar technology and are ideal for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical. They can source a maximum load of 200 mA and feature a CMOS logic-level-compatible enable pin along with a capacitor-programmable soft-start function. This makes them an excellent choice for powering operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | -3 to -35 | V |
| Noise (RMS) | 14 µV (20 Hz to 20 kHz), 15.1 µV (10 Hz to 100 kHz) | µV |
| Power-Supply Ripple Rejection (PSRR) | 72 dB (120 Hz), ≥ 55 dB (10 Hz to 700 kHz) | dB |
| Adjustable Output Voltage | -1.18 to -33 | V |
| Maximum Output Current | 200 | mA |
| Dropout Voltage | 216 mV at 100 mA | mV |
| Stable With Ceramic Capacitors | ≥ 2.2 µF | µF |
| Operating Temperature Range | -40 to 125 | °C |
| Package Types | 8-Pin HVSSOP PowerPAD™, 3-mm × 3-mm VSON |
Key Features
- Ultralow noise: 14 µV RMS (20 Hz to 20 kHz) and 15.1 µV RMS (10 Hz to 100 kHz)
- High power-supply ripple rejection: 72 dB at 120 Hz and ≥ 55 dB from 10 Hz to 700 kHz
- Adjustable output voltage: -1.18 V to -33 V
- Maximum output current: 200 mA
- Low dropout voltage: 216 mV at 100 mA
- Stable with ceramic capacitors ≥ 2.2 µF
- CMOS logic-level-compatible enable pin
- Capacitor-programmable soft-start function
- Built-in, fixed current limit and thermal shutdown protection
Applications
- Supply rails for operational amplifiers, DACs, ADCs, and other high-precision analog circuitry
- Post DC-DC converter regulation and ripple filtering for high-performance analog circuitry
- Audio applications requiring low noise and high PSRR
- Test and measurement equipment
- Industrial instrumentation
- Base stations and telecom infrastructure
- RX, TX, and PA circuitry in RF applications
Q & A
- What is the input voltage range of the TPS7A3001DRBT?
The input voltage range is from -3 V to -35 V.
- What is the maximum output current of the TPS7A3001DRBT?
The maximum output current is 200 mA.
- What are the noise specifications of the TPS7A3001DRBT?
The noise is 14 µV RMS (20 Hz to 20 kHz) and 15.1 µV RMS (10 Hz to 100 kHz).
- What is the power-supply ripple rejection (PSRR) of the TPS7A3001DRBT?
The PSRR is 72 dB at 120 Hz and ≥ 55 dB from 10 Hz to 700 kHz.
- What types of packages are available for the TPS7A3001DRBT?
The available packages are 8-Pin HVSSOP PowerPAD™ and 3-mm × 3-mm VSON.
- What is the operating temperature range of the TPS7A3001DRBT?
The operating temperature range is from -40°C to 125°C.
- Does the TPS7A3001DRBT have built-in protection features?
Yes, it includes built-in, fixed current limit and thermal shutdown protection.
- Can the TPS7A3001DRBT be used for post DC-DC converter regulation?
Yes, it is suitable for post DC-DC converter regulation to filter out output voltage ripple.
- What types of applications benefit from the TPS7A3001DRBT?
It is beneficial for high-precision instrumentation, audio, test and measurement, and industrial instrumentation applications.
- Is the TPS7A3001DRBT stable with ceramic capacitors?
Yes, it is stable with ceramic capacitors ≥ 2.2 µF.
