Product Summary

The ADC121C027CIMK is a low-power, monolithic, 12-bit, analogto-digital converter(ADC) that operates from a +2.7 to 5.5V supply. The converter of the ADC121C027CIMK is based on a successive approximation register architecture with an internal track-and-hold circuit that can handle input frequencies up to 11MHz. The ADC121C027CIMK operates from a single supply which also serves as the reference. The device features an I2C-compatible serial interface that operates in all three speed modes, including high speed mode (3.4MHz). The ADC Alert feature of the ADC121C027CIMK provides an interrupt that is activated when the analog input violates a programmable upper or lower limit value. The device features an automatic conversion mode, which frees up the controller and I2C interface. In this mode, the ADC continuously monitors the analog input for an "out-of-range" condition and provides an interrupt if the measured voltage goes out-of-range.

Parametrics

ADC121C027CIMK absolute maximum ratings: (1)Supply Voltage, VA -0.3V to +6.5V; (2)Voltage on any Analog Input Pin to; (3)GND .0.3V to (VA +0.3V); (4)Voltage on any Digital Input Pin to; (5)GND .0.3V to 6.5V; (6)Input Current at Any Pin (Note 3) ±15 mA; (7)Package Input Current (Note 3) ±20 mA

Features

ADC121C027CIMK features: (1)I2C-Compatible 2-wire Interface which supports standard(100kHz), fast (400kHz), and high speed (3.4MHz) modes; (2)Extended power supply range (+2.7V to +5.5V); (3)Up to four pin-selectable chip addresses; (4)Out-of-range Alert Function; (5)Automatic Power-down mode while not converting; (6)Very small 6-pin TSOT packages; (7)±8kV HBM ESD protection (SDA, SCL).

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
ADC121C027CIMK/NOPB
ADC121C027CIMK/NOPB
National Semiconductor (TI)
ADC (A/D Converters)
Data Sheet
0-1: $1.48
1-10: $1.33
10-25: $1.19
25-100: $0.80
ADC121C027CIMKX/NOPB
ADC121C027CIMKX/NOPB
National Semiconductor (TI)
ADC (A/D Converters)
Data Sheet
0-2420: $0.74
2420-3000: $0.73