HMXADC9225
Radiation Hardened 12-Bit, 20 MSPS
Monolithic A/D Converter
The HMXADC9225 is a radiation hardened monolithic, single supply, 12-bit, 20
MSPS, analog-to-digital converter with an on-chip, high performance sample-and-
hold amplifier. The HMXADC9225 uses a multistage differential pipelined
architecture with output error correction logic to provide 12-bit accuracy at 20 MSPS
data rates, and guarantees no missing codes over the full operating temperature
range.
The HMXADC9225 is fabricated on a radiation hardened SOI-IV Silicon On Insulator
(SOI) process with very low power consumption.
The input of the HMXADC9225 allows for easy interfacing to space and military imaging, sensor, and communications
systems. With a truly differential input structure, the user can select a variety of input ranges and offsets including single-
ended applications. The dynamic performance is excellent.
The sample-and-hold amplifier (SHA) is well suited for both multiplexed systems that switch full-scale voltage levels in
successive channels and sampling single-channel inputs at frequencies up to and well beyond the Nyquist rate.
A single clock input is used to control all internal conversion cycles. The digital output data is presented in straight binary
output format.
FEATURES
Monolithic 12-Bit, 20 MSPS A/D Converter
Rad Hard: >500k Rad(Si) Total Dose
Single +5 V Analog Supply
Complete On-Chip S/H Amplifier
Straight Binary Output Data
Low Power
The HMXADC9225 at 345 mW consumes a fraction of the
power of presently available in existing monolithic
solutions.
5V or 3.3V Digital and I/O Supply
No Missing Codes Guaranteed
Differential Nonlinearity Error: 0.4 LSB
Signal-to-Noise and Distortion Ratio: 69.6 dB
Spurious-Free Dynamic Range: –81 dB
28-Lead Ceramic Flat Pack
Output Enable (OE)
The OE input allows user to put the tri-state digital outputs
into a high impedance mode.
Dual Power Supply Capability
The HMXADC9225 uses a single +5 V power supply
simplifying system power supply design. It also features a
separate digital I/O power supply line to accommodate
3.3V and 5V logic families.
Mixed Signal Rad Hard Process
The HMXADC9225 is fabricated on space qualified SOI
CMOS process. High-speed precision analog circuits
are now combined with high-density logic circuits that
can reliably withstand the harshest environments.
On-Chip Sample-and-Hold (SHA)
The versatile SHA input can be configured for either
single-ended or differential inputs.
Space Qualified Package
The HMXADC9225 is packaged in a 28 lead ceramic flat
pack.