MAX1003

19-1236; Rev 0; 6/97 KIT ATION EVALU E L B AVAILA Low-Power, 90Msps, Dual 6-Bit ADC ____________________________Features o Two Matched 6-Bit ADCs o High Sampling Rate: 90Msps per ADC o Low Power Dissipation: 350mW o Excellent Dynamic Performance: 5.85 ENOB with 20MHz Analog Input 5.7 ENOB with 50MHz Analog Input o ±1/4LSB INL and DNL (typ) o Internal Bandgap Voltage Reference o Internal Oscillator with Overdrive Capability o 55MHz (-0.5dB) Bandwidth Input Amplifiers with True Differential Inputs o User-Selectable Input Full-Scale Range (125mVp-p, 250mVp-p, or 500mVp-p) o 1/4LSB Channel-to-Channel Offset Matching (typ) o 0.1dB Gain and 0.5° Phase Matching (typ) o Single-Ended or Differential Input Drive o Flexible, 3.3V, CMOS-Compatible Digital Outputs _______________General Description The MAX1003 is a dual, 6-bit analog-to-digital converter (ADC) that combines high-speed, low-power operation with a user-selectable input range, an internal reference, and a clock oscillator. The dual parallel ADCs are designed to convert in-phase (I) and quadrature (Q) analog signals into two 6-bit, offset-binary-coded digital outputs at sampling rates up to 90Msps. The ability to directly interface with baseband I and Q signals makes the MAX1003 ideal for use in direct-broadcast satellite, VSAT, and QAM16 demodulation applications. The MAX1003 input amplifiers feature true differential inputs, a -0.5dB analog bandwidth of 55MHz, and userprogrammable input full-scale ranges of 125mVp-p, 250...