Rainbow Electronics MAX1002 - Manual

_______________General Description
The MAX1002 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 refer-
ence, 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 60Msps while
achieving typical integral nonlinearity (INL) and differ-
ential nonlinearity (DNL) of ±1/4LSB. The ability to
interface directly with baseband I and Q signals makes
the MAX1002 ideal for use in direct-broadcast satellite,
VSAT, and QAM16 demodulation applications.
The MAX1002 input amplifiers feature true differential
inputs, a 55MHz -0.5dB analog bandwidth, and user-
programmable input full-scale ranges of 125mVp-p,
250mVp-p, or 500mVp-p. With an AC-coupled input
signal, matching performance between input channels
is typically 0.1dB gain, 1/4LSB offset, and 0.5° phase.
Dynamic performance is 5.85 effective number of bits
(ENOB) with a 20MHz analog input signal, or 5.78
ENOB with a 50MHz input signal.
The MAX1002 operates with a single +5V power supply
and provides TTL-compatible digital outputs. The device
is available in the commercial temperature range (0°C to
+70°C) and comes in a 36-pin SSOP package.
________________________Applications
Direct Broadcast Satellite (DBS) Receivers
VSAT Receivers
Wide Local Area Networks (WLAN)
Cable Television Set-Top Boxes
____________________________Features
♦ ±1/4LSB INL and DNL, Typical
♦ 1/4LSB (typ) Channel-to-Channel Offset Matching
♦ 0.1dB Gain and 0.5° Phase Matching, Typical
♦ Internal Bandgap Voltage Reference
♦ Two Matched 6-Bit, 60Msps ADCs
♦ Excellent Dynamic Performance:
5.85 ENOB with 20MHz Analog Input
5.7 ENOB with 50MHz Analog Input
♦ Internal Oscillator with Overdrive Capability
♦ 55MHz (-0.5dB) Bandwidth Input Amplifiers
with True Differential Inputs
♦ User-Selectable Input Full-Scale Range
(125mVp-p, 250mVp-p, or 500mVp-p)
♦ Single-Ended or Differential Input Drive
♦ +5V Single Supply
♦ TTL Outputs
♦ 90Msps Upgrade with +3.3V CMOS-Compatible
Output Available (MAX1003)
MAX1002
Low-Power, 60Msps, Dual, 6-Bit ADC
________________________________________________________________ Maxim Integrated Products 1
MAX1002
DATA
BUFFER
Q
CLOCK
DRIVER
D0I–D5I
DCLK
TNK+
TNK-
DQ0–DQ5
INPUT
AMP
I
IIN+
IIN-
GAIN
QIN+
QIN-
CLOCK
OUT
DATA
BUFFER
I
6 ADC
I
ADC
Q
VREF
VREF
BANDGAP
REFERENCE
OFFSET
CORREC-
TION Q
OFFSET
CORREC-
TION I
INPUT
AMP
Q
QOCC+ QOCC-
IOCC+ IOCC-
6 6
6
_________________________________________________________Functional Diagram
19-1270; Rev 0; 7/97
PART
MAX1002CAX 0°C to +70°C
TEMP. RANGE PIN-PACKAGE
36 SSOP
EVALUATION KIT
AVAILABLE
______________Ordering Information
Pin Configuration appears at end of data sheet.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 408-737-7600 ext. 3468.