16-Bit, 500ksps, 0 to 5V SAR ADC with Internal Reference in TDFN

ADC with Internal Reference and Integrated Reference Buffer Saves Space and Cost

Description

The MAX11164 16-bit, 500ksps, SAR ADC offers excellent AC and DC performance with unipolar input range, small size, and internal reference. The MAX11164 integrates an optional 6ppm/°C reference with internal buffer, saving the cost and space of an external reference.

This ADC achieves 92.2dB SNR and -105dB THD. The MAX11164 guarantees 16-bit no-missing codes.

The MAX11164 communicates using an SPI-compatible serial interface at 2.5V, 3V, 3.3V, or 5V logic. The serial interface can be used to daisy-chain multiple ADCs for multichannel applications and provides a busy indicator option for simplified system synchronization and timing.

The MAX11164 is offered in a 12-pin, 3mm x 3mm, TDFN package and is specified over the -40°C to +85°C temperature range.

Key Features

High DC and AC Accuracy
16-Bit Resolution with No Missing Codes
SNR: 92.2dB
THD: -105dB at 10kHz
±0.5 LSB INL (typ)
±0.2 LSB DNL (typ)
6ppm/°C (typ) Internal Reference
Internal Reference Buffer
Tiny 12-Pin 3mm x 3mm TDFN Package
5V Analog Supply
2.3V to 5V Digital Supply
23mW at 500ksps
Shutdown Mode Feature Available
500ksps Throughput Rate
No Pipeline Delay/Latency
Flexible Industry-Standard Serial Interface Saves I/O Pins
SPI/QSPI™/MICROWIRE®/DSP-Compatible

MAX15062

60V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters

Industry’s Smallest High-Voltage Synchronous Buck Regulator

Description

Create a design and simulate using EE-Sim: [MAX15062]

The MAX15062 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input voltage range. The converter delivers output currents up to 300mA at output voltages of 3.3V (MAX15062A) and 5V (MAX15062B). The device operates over the -40°C to +125°C temperature range and is available in a compact 8-pin (2mm × 2mm) TDFN package. Simulation models are available.

The device employs a peak-current-mode control architecture with a MODE pin that can be used to operate the device in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes. PWM operation provides constant frequency operation at all loads and is useful in applications sensitive to variable switching frequency. PFM operation disables negative inductor current and additionally skips pulses at light loads for high efficiency. The low-resistance on-chip MOSFETs ensure high efficiency at full load and simplify the PCB layout.

To reduce input inrush current, the device offers an internal fixed soft-start. The device also incorporates an EN/UVLO pin that allows the user to turn on the part at the desired input-voltage level. An open-drain, active-low RESET pin can be used for output-voltage monitoring.

Key Features

Eliminates External Components and Reduces Total Cost
- No Schottky—Synchronous Operation for High Efficiency and Reduced Cost
- Internal Compensation and Feedback Divider
- Internal Soft-Start
- All-Ceramic Capacitors, Ultra-Compact Layout
Reduces Number of DC-DC Regulators to Stock
- Wide 4.5V to 60V Input Voltage Range
- Fixed 3.3V and 5V Output Voltages
- Delivers Up to 300mA
- Configurable Between PFM and Forced-PWM Modes
Reduces Power Dissipation
- Peak Efficiency = 92%
- PFM Feature for High Light-Load Efficiency
- Shutdown Current = 2.2µA (typ)
Operates Reliably in Adverse Industrial Environments
- Hiccup-Mode Current Limit and Autoretry Startup
- Built-In Output Voltage Monitoring with Open-Drain, Active-Low RESET Pin
- Programmable EN/UVLO Threshold
- Monotonic Startup into Prebiased Output
- Overtemperature Protection
- -40°C to +125°C Automotive/Industrial Temperature Range