AD9002

Features:

150 MSPS Encode Rate
Low Input Capacitance: 17 pF
Low Power: 750 mW
5.2 V Single Supply
MIL-STD-883 Compliant Versions Available


Application

Radar Systems
Digital Oscilloscopes/ATE Equipment
Laser/Radar Warning Receivers
Digital Radio
Electronic Warfare (ECM, ECCM, ESM)
Communication/Signal Intelligence


Pinout




Specifications

Supply Voltage (V_S)  . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V
Analog-to-Digital Supply Voltage Differential  . . . . . . . . .0.5 V
Analog Input Voltage  . . . . . . . . . . . . . . . . . . . .V_S to +0.5 V
Digital Input Voltage  . . . . . . . . . . . . . . . . . . . . . . .V_S to 0 V
Reference Input Voltage (+VREF VREF)². . . .3.5 V to 0.1 V
Differential Reference Voltage  . . . . . . . . . . . . . . . . . . . 2.1 V
Reference Midpoint Current  . . . . . . . . . . . . . . . . . . . . ±4 mA
Digital Output Current  . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Operating Temperature Range
AD9002AD/BD/AJ/BJ  . . . . . . . . . . . . . . . .     25°C to +85°C
AD9002SE/SD/TD/TE  . . . . . . . . . . . . . .      55°C to +125°C
Storage Temperature Range  . . . . . . . . . . 65°C to +150°C
Junction Temperature³. . . . . . . . . . . . . . . . . . . . . . . .+175°C
Lead Soldering Temperature (10 sec)  . . . . . . . . . . . +300°C


Description

The AD9002 is an 8-bit, high speed, analog-to-digital converter. The AD9002 is fabricated in an advanced bipolar process that allows operation at sampling rates in excess of 150 megasamples/ second. Functionally, the AD9002 is comprised of 256 parallel comparator stages whose outputs are decoded to drive the ECL compatible output latches.

An exceptionally wide large signal analog input bandwidth of 160 MHz is due to an innovative comparator design and very close attention to device layout considerations. The wide input bandwidth of the AD9002 allows very accurate acquisition of high speed pulse inputs, without an external track-and-hold. The comparator output decoding scheme minimizes false codes, which is critical to high speed linearity. The AD9002 provides an external hysteresis control pin that can be used to optimize comparator sensitivity to further im- prove performance. Additionally, the AD9002's low power dissipation of 750 mW makes it usable over the full extended temperature range. The AD9002 also incorporates an overflow bit to indicate overrange inputs. This overflow output can be disabled with the overflow inhibit pin.