ML2281

Features:

Conversion time: 6µs
Total unadjusted error: ±1/2LSB or ±1LSB
Sample-and-hold: 375ns acquisition
2, 4 or 8-input multiplexer options
0 to 5V analog input range with single 5V power supply
Operates ratiometrically or with up to 5V voltage reference
No zero or full-scale adjust required
ML2281 capable of digitizing a 5V, 40kHz sine wave
Low power: 12.5mW MAX
Superior pin compatible replacement for ADC0831, ADC0832, ADC0834, and ADC0838
Analog input protection: 25mA (min) per input
Now in 8-Pin SOIC Package (ML2281, ML2282)

Pinout




Specifications

Current into V+ .....................................................15mA
Supply Voltage, V_CC ...............................................6.5V
Voltage
Logic Inputs ...........................................7 to V_CC +7V
Analog Inputs ................................0.3V to V_CC +0.3V
Input Current per Pin (Note 1) ......................... ±25mA
Storage Temperature .........................65°C to 150°C
Package Dissipation
at TA = 25°C (Board Mount) .............................800mW



Description

The ML2281 family are 8-bit successive approximation A/D converters with serial I/O and configurable input multiplexers with up to 8 input channels. All errors of the sample-and-hold, incorporated on the ML2281 family are accounted for in the analog-to-digital converters accuracy specification. The voltage reference can be externally set to any value between GND and VCC, thus allowing a full conversion over a relatively small voltage span if desired.

The ML2281 family is an enhanced double polysilicon CMOS pin compatible second source for the ADC0831, ADC0832, ADC0834, and ADC0838 A/D converters. The ML2281 series enhancements are faster conversion time, true sample-and-hold function, superior power supply rejection, improved AC common mode rejection, faster digital timing, and lower power dissipation. All parameters of ML2281 are guaranteed over temperature with a power supply voltage of 5V ±10%.