Applications

• QAM Telecommunications
• Electronic Warfare (ECM, ECCM, ESM)
• Radar Guidance Digitizer

Key Features

• Small Area < 0.26mm²
• Size x=361µm y=710µm
• Low Input Capacitance < 5pF
• Output Code Binary
• Overflow Bit

Key Specification

• Resolution 6 Bit
• Maximum Sampling Rate 100MSample/sec
• Supply Range between 3.0 V and 3.6 V
• Wide Junction Temperature Range from -40 °C to +125 °C
• Negative Reference Voltage (VREFN) Range from 0.35V to 0.6V
• Positive Reference Voltage (VREFP) Range from 1.8V to 2.8V
• Reference Voltage Difference (VREFP-VREFN) must be greater than 1.2V at 3.3V Supply
• Analog Input Voltage Range from VREFN to VREFP at 3.3V Supply
• Full Scale Range (VREFP-VREFN) at 3.3V Supply
• Total Power Consumption Typical 54.5mW Maximum 118.8mW

Description

The Macro Cell FLASH6.C35 is a 6-bit single step parallel analog to digital converter. The architecture is based on a 380-Ohm polysilicon resistor reference ladder and static CMOS comparators. The thermometer code of the comparator outputs is encoded in a fast ROM encoder into straight binary code with CMOS logic signal levels. The last comparator output is connected unlatched to the overload bit.

The comparators do not need auto zeroing and therefor are fast and perform minimal kickback and the analog signal input.

The conversion range is set by the reference inputs VREFP and VREFN. The overload bit is set when the input is higher than VREFP-0.5LSB.