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Maxim Integrated Semiconductor Electronic Components Datasheet


MAX108

5V / 1.5Gsps / 8-Bit ADC with On-Chip 2.2GHz Track/Hold Amplifier


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MAX108 pdf
19-1492; Rev 0; 9/99
EVAALVUAAILTAIOBNLEKIT
±5V, 1.5Gsps, 8-Bit ADC with
On-Chip 2.2GHz Track/Hold Amplifier
General Description
The MAX108 PECL-compatible, 1.5Gsps, 8-bit analog-
to-digital converter (ADC) allows accurate digitizing of
analog signals with bandwidths to 2.2GHz. Fabricated
on Maxim’s proprietary advanced GST-2 bipolar
process, the MAX108 integrates a high-performance
track/hold (T/H) amplifier and a quantizer on a single
monolithic die.
The innovative design of the internal T/H, which has an
exceptionally wide 2.2GHz full-power input bandwidth,
results in high performance (typically 7.5 effective bits)
at the Nyquist frequency. A fully differential comparator
design and decoding circuitry reduce out-of-sequence
code errors (thermometer bubbles or sparkle codes)
and provide excellent metastable performance. Unlike
other ADCs that can have errors resulting in false full-
or zero-scale outputs, the MAX108 limits the error mag-
nitude to 1LSB.
The analog input is designed for either differential or
single-ended use with a ±250mV input voltage range.
Dual, differential, positive-referenced emitter-coupled
logic (PECL)-compatible output data paths ensure easy
interfacing and include an 8:16 demultiplexer feature
that reduces output data rates to one-half the sampling
clock rate. The PECL outputs can be operated from any
supply between +3V to +5V for compatibility with +3.3V
or +5V referenced systems. Control inputs are provided
for interleaving additional MAX108 devices to increase
the effective system sampling rate.
The MAX108 is packaged in a 25mm x 25mm, 192-con-
tact Enhanced Super Ball-Grid Array (ESBGA™) and is
specified over the commercial (0°C to +70°C) tempera-
ture range. For pin-compatible, lower speed versions of
the MAX108, see the MAX104 (1Gsps) and the MAX106
(600Msps) data sheets.
Applications
Digital RF/IF Signal Processing
Direct RF Downconversion
High-Speed Data Acquisition
Digital Oscilloscopes
High-Energy Physics
Radar/ECM Systems
ATE Systems
Features
o 1.5Gsps Conversion Rate
o 2.2GHz Full-Power Analog Input Bandwidth
o 7.5 Effective Bits at fIN = 750MHz (Nyquist
Frequency)
o ±0.25LSB INL and DNL
o 50Differential Analog Inputs
o ±250mV Input Signal Range
o On-Chip, +2.5V Precision Bandgap Voltage
Reference
o Latched, Differential PECL Digital Outputs
o Selectable 8:16 Demultiplexer
o Internal Demux Reset Input with Reset Output
o 192-Contact ESBGA Package
o Pin Compatible with MAX104 (1Gsps) and
MAX106 (600Msps)
Ordering Information
PART
MAX108CHC
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
192 ESBGA
TOP VIEW
192-Contact ESBGA
Ball Assignment Matrix
MAX108
Typical Operating Circuit appears at end of data sheet.
ESBGA is a trademark of Amkor/Anam.
ESBGA
PCB land pattern appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.



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MAX108 pdf
±5V, 1.5Gsps, 8-Bit ADC with
On-Chip 2.2GHz Track/Hold Amplifier
ABSOLUTE MAXIMUM RATINGS
VCCA to GNDA .........................................................-0.3V to +6V
VCCD to GNDD.........................................................-0.3V to +6V
VCCI to GNDI ............................................................-0.3V to +6V
VCCO to GNDD ........................................-0.3V to (VCCD + 0.3V)
AUXEN1, AUXEN2 to GND .....................-0.3V to (VCCD + 0.3V)
VEE to GNDI..............................................................-6V to +0.3V
Between GNDs......................................................-0.3V to +0.3V
VCCA to VCCD .......................................................-0.3V to +0.3V
VCCA to VCCI.........................................................-0.3V to +0.3V
PECL Digital Output Current ...............................................50mA
REFIN to GNDR ........................................-0.3V to (VCCI + 0.3V)
REFOUT Current ................................................+100µA to -5mA
ICONST, IPTAT to GNDI .......................................-0.3V to +1.0V
TTL/CMOS Control Inputs
(DEMUXEN, DIVSELECT) ......................-0.3V to (VCCD + 0.3V)
RSTIN+, RSTIN- ......................................-0.3V to (VCCO + 0.3V)
VOSADJ Adjust Input ................................-0.3V to (VCCI + 0.3V)
CLK+ to CLK- Voltage Difference..........................................±3V
CLK+, CLK-.....................................(VEE - 0.3V) to (GNDD + 1V)
CLKCOM.........................................(VEE - 0.3V) to (GNDD + 1V)
VIN+ to VIN- Voltage Difference ............................................±2V
VIN+, VIN- to GNDI................................................................±2V
Continuous Power Dissipation (TA = +70°C)
192-Contact ESBGA (derate 61mW/°C above +70°C) ....4.88W
(with heatsink and 200 LFM airflow,
derate 106mW/°C above +70°C) .....................................8.48W
Operating Temperature Range
MAX108CHC.........................................................0°C to +70°C
Operating Junction Temperature.....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(VCCA = VCCI = VCCD = +5.0V ±5%, VEE = -5.0V ±5%, VCCO = +3.0V to VCCD, REFIN connected to REFOUT, TA = TMIN to TMAX,
unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
ACCURACY
Resolution
Integral Nonlinearity (Note 1)
Differential Nonlinearity (Note 1)
Missing Codes
ANALOG INPUTS
Full-Scale Input Range
Common-Mode Input Range
Input Resistance
RES
INL
DNL
VFSR
VCM
RIN
TA = +25°C
TA = +25°C
No missing codes guaranteed
Note 1
Signal + offset w.r.t. GNDI
VIN+ and VIN- to GNDI, TA = +25°C
8 Bits
-0.5 ±0.25 0.5
LSB
-0.5 ±0.25 0.5
LSB
None Codes
475 500 525 mVp-p
±0.8
V
49 50 51
Input Resistance Temperature
Coefficient
TCR
150 ppm/°C
VOS ADJUST CONTROL INPUT
Input Resistance (Note 2)
RVOS
Input VOS Adjust Range
REFERENCE INPUT AND OUTPUT
Reference Output Voltage
REFOUT
VOSADJ = 0 to 2.5V
Driving REFIN input only
14 25
±4 ±5.5
k
LSB
2.475 2.50 2.525
V
Reference Output Load
Regulation
REFOUT 0 < ISOURCE < 2.5mA
5 mV
Reference Input Resistance
RREF Referenced to GNDR
45
k
2 _______________________________________________________________________________________



Part Number MAX108
Description 5V / 1.5Gsps / 8-Bit ADC with On-Chip 2.2GHz Track/Hold Amplifier
Maker Maxim - Maxim
Total Page 30 Pages
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