ISL267440
ISL267440 is 1MSPS SAR ADC manufactured by Renesas.
ISL267440, ISL267450A
10-Bit and 12-Bit, 1MSPS SAR ADCs
The ISL267440 and ISL267450A are 10-bit and 12-bit, 1MSPS sampling SAR-type ADCs featuring excellent linearity over supply and temperature variations. These devices are drop-in patible with the AD7440 and AD7450A. The robust, fully-differential input offers high impedance to minimize errors due to leakage currents, and the specified measurement accuracy is maintained with input signals up to the supply rails.
The reference accepts inputs from 0.1V to 2.2V for 3V operation and 0.1V to 3.5V for 5V operation. This provides design flexibility in a wide variety of applications. The ISL267440, ISL267450A also feature up to 8k V Human Body Model ESD survivability.
The serial digital interface is SPI patible and is easily interfaced to popular FPGAs and microcontrollers. Power dissipation is 8.5m W at a sampling rate of 1MSPS, and just 5µW between conversions utilizing Auto Power-Down mode (with a 5V supply). The ISL267440, ISL267450A are excellent solutions for remote industrial sensors and battery-powered instruments.
The ISL267440, ISL267450A are available in an 8 lead MSOP package, and are specified for operation over the Industrial temperature range (- 40°C to +85°C).
VREF
VIN+ VIN-
SAR LOGIC
SERIAL INTERFACE
SCLK SDATA CS
VREF
FIGURE 1. BLOCK DIAGRAM
DNL (LSB)
FN7708 Rev.2.00 June 28, 2012
Features
- Drop-in patible with AD7440, AD7450A
- Differential Input
- Simple SPI-patible Serial Digital Interface
- Guaranteed No Missing Codes
- 1MHz Sampling Rate
- 3V or 5V Operation
- Low Operating Current
- 1.25m A at 1MSPS with 3V Supplies
- 1.70m A at 1MSPS with 5V Supplies
- Power-down Current between Conversions: 1µA
- Excellent Differential Non-Linearity
- Low THD: -83d B (typ)
- Pb-Free (Ro HS pliant)
- Available in MSOP...
