AMC7834
- Eight Monotonic 12-bit DACs With Programmable
Ranges- Four Bipolar DACs:
–4 to 1 V, –5 to 0 V, and 0 to 5 V - Four Unipolar DACs:
0 to 5 V, and 2.5 to 7.5 V - High Current Drive Capability: up to ±10 mA
- Selectable Clamp Voltage
- Four Bipolar DACs:
- Multi-Channel 12-bit SAR ADC
- Four External Analog Inputs: 0 to 2.5 V Range
- Four Internal Inputs for Bipolar DAC Monitoring
- Programmable Out-of-Range Alarms
- Four High-Side Current-Sense Amplifiers
- Common Mode Voltages: 4 to 60 V
- Optional Closed-Loop Drain-Current Controller
Operation
- Temperature Sensing Capabilities
- Internal Temperature Sensor
- Two Remote Temperature-Diode Drivers
- Internal 2.5 V Reference
- Four General-Purpose I/O Ports (GPIOs)
- Low-Power SPI-Compatible Serial Interface
- 4-Wire Mode, 1.7 to 3.6 V Operation
- Operating Temperature Range: –40°C to +125°C
- Available in a 56-Pin VQFN Package
The AMC7834 device is a highly-integrated, low-power, analog monitoring and control solution for power-amplifier (PA) biasing capable of temperature, current and voltage supervision.
The device integrates a multi-channel, 12-bit analog-to-digital converter (ADC); eight, 12-bit digital-to-analog converters (DAC); four high-side current-sense amplifiers that can be optionally set to operate as part of four independent closed-loop drain-current controllers; an accurate on-chip temperature sensor and two remote temperature-sensor diode drivers; four configurable general-purpose I/O ports (GPIOs); and an accurate internal reference. The high level of integration significantly reduces component count and simplifies PA-biasing system designs.
The function integration and wide operating-temperature range of the device make it suitable as an all-in-one, low-cost, bias control-circuit for PAs found in multi-channel RF communication systems. The flexible DAC output ranges and wide common mode voltage current sensors allow the device to be used as a biasing solution for a large variety of transistor technologies such as LDMOS, GaAs, and GaN. The AMC7834 feature set is similarly beneficial in general-purpose monitor and control systems.
For applications that require a different channel-count, additional features, or converter resolutions, Texas Instruments offers a complete family of analog monitor and control (AMC) products. For more information, go to www.ti.com/amc.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | AMC7834 12-Bit Integrated Power-Amplifier Monitor and Control System with Temperature, Current and Voltage Supervision Capabilities datasheet (Rev. B) | PDF | HTML | 17 Mär 2016 |
EVM User's guide | AMC7834EVM User's Guide (Rev. B) | 09 Mai 2016 |
Design und Entwicklung
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AMC7834EVM — Evaluierungsmodul für AMC7834 12-Bit-AMC-System (Integrated Power Amplifier Analog Monitor and Contr
The AMC7834EVM (evaluation module) is an easy to use platform for evaluating the functionality and performance of the 12-bit AMC device. The EVM features the AMC7834, a highly integrated, low-power, analog monitoring and control system that is capable of current, temperature and voltage (...)
PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool
Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
VQFN (RTQ) | 56 | Ultra Librarian |
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