MAX104 Datasheet, PDF (1/32 Pages) Maxim Integrated Products – ±5V, 1Gsps, 8-Bit ADC with On-Chip 2.2GHz Track/Hold Amplifier

19-1459; Rev 1; 5/99
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±5V, 1Gsps, 8-Bit ADC with
On-Chip 2.2GHz Track/Hold Amplifier
General Description
The MAX104 PECL-compatible, 1Gsps, 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 MAX104 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 (greater than 7.5 effective
bits) at the Nyquist frequency. A fully differential com-
parator design and decoding circuitry reduce out-of-
sequence code errors (thermometer bubbles or sparkle
codes) and provide excellent metastable performance
of one error per 10¹⁶ clock cycles. Unlike other ADCs
that can have errors resulting in false full- or zero-scale
outputs, the MAX104 limits the error magnitude to
1LSB.
The analog input is designed for either differential or
single-ended use with a ±250mV input voltage range.
Dual, differential, PECL-compatible output data paths
ensure easy interfacing and include an 8:16 demulti-
plexer 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 com-
patibility with +3.3V or +5V referenced systems. Control
inputs are provided for interleaving additional MAX104
devices to increase the effective system sampling rate.
The MAX104 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.
Applications
Digital RF/IF Signal Processing
Direct RF Downconversion
High-Speed Data Acquisition
Digital Oscilloscopes
High-Energy Physics
Radar/Sonar/ECM Systems
ATE Systems
Features
o 1Gsps Conversion Rate
o 2.2GHz Full-Power Analog Input Bandwidth
o >7.5 Effective Bits at f_IN = 500MHz (Nyquist
Frequency)
o ±0.25LSB INL and DNL
o 50Ω Differential Analog Inputs
o ±250mV Input Signal Range
o On-Chip, +2.5V Precision Bandgap Voltage
Reference
o Latched, Differential PECL Digital Outputs
o Low Error Rate: 10^-16 Metastable States at 1Gsps
o Selectable 8:16 Demultiplexer
o Internal Demux Reset Input with Reset Output
o 192-Contact ESBGA Package
Ordering Information
PART
MAX104CHC
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
192 ESBGA
192-Contact ESBGA
Ball Assignment Matrix
TOP VIEW
MAX104
Typical Operating Circuit appears at end of data sheet.
ESBGA is a trademark of Amkor/Anam.
ESBGA
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