Product Details
●The AD7457 is a 12-bit, low power, successive-approximation (SAR) analog-to-digital converter that features a pseudo differential analog input. This part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 100 kSPS.
●The part contains a low-noise, wide bandwidth, differential track and hold amplifier (T/H) which can handle input frequencies in excess of 1 MHz. The reference voltage for the AD7457 is applied externally to the VREF pin and can range from 100mV to VDD, depending on what suits the application.
●The conversion process and data acquisition are controlled using and the serial clock allowing the device to interface with Microprocessors or DSPs.
●The SAR architecture of these parts ensures that there are no pipeline delays.
●The AD7457 uses advanced design techniques to achieve very low power dissipation.
●### Features and Benefits
● Specified for VDD of 2.7 V to
●5.25 V
● Very Low Power:
●\- 0.9 mW max at 100 kSPS with VDD = 3V
●\- 3 mW max at 100 kSPS with VDD = 5V
● Pseudo Differential Analog Input
● 70 dB SINAD at 30 kHz Input Frequency
● No Pipeline Delays
● Serial Interface
●\- SPI®/QSPI™/MICROWIRE™/DSP
●Compatible
● Automatic Power-Down Mode
● 8 Pin SOT-23
