MAX1192 Datasheet, PDF (1/28 Pages) Maxim Integrated Products – Ultra-Low-Power, 22Msps, Dual 8-Bit ADC

19-2835; Rev 1; 9/03
Ultra-Low-Power, 22Msps, Dual 8-Bit ADC
General Description
The MAX1192 is an ultra-low-power, dual, 8-bit, 22Msps
analog-to-digital converter (ADC). The device features
two fully differential wideband track-and-hold (T/H) inputs.
These inputs have a 440MHz bandwidth and accept fully
differential or single-ended signals. The MAX1192 deliv-
ers a typical signal-to-noise and distortion (SINAD) of
48.6dB at an input frequency of 5.5MHz and a sampling
rate of 22Msps while consuming only 27.3mW. This ADC
operates from a 2.7V to 3.6V analog power supply. A sep-
arate 1.8V to 3.6V supply powers the digital output driver.
In addition to ultra-low operating power, the MAX1192
features three power-down modes to conserve power
during idle periods. Excellent dynamic performance,
ultra-low power, and small size make the MAX1192 ideal
for applications in imaging, instrumentation, and digital
communications.
An internal 1.024V precision bandgap reference sets
the full-scale range of the ADC to ±0.512V. A flexible
reference structure allows the MAX1192 to use its inter-
nal reference or accept an externally applied reference
for applications requiring increased accuracy.
The MAX1192 features parallel, multiplexed, CMOS-
compatible tri-state outputs. The digital output format is
offset binary. A separate digital power input accepts a
voltage from 1.8V to 3.6V for flexible interfacing to dif-
ferent logic levels. The MAX1192 is available in a 5mm
× 5mm, 28-pin thin QFN package, and is specified for
the extended industrial (-40°C to +85°C) temperature
range.
For higher sampling frequency applications, refer to the
MAX1195–MAX1198 dual 8-bit ADCs. Pin-compatible
versions of the MAX1192 are also available. Refer to the
MAX1191 data sheet for 7.5Msps, and the MAX1193
data sheet for 45Msps.
Applications
Ultrasound and Medical Imaging
IQ Baseband Sampling
Battery-Powered Portable Instruments
Low-Power Video
WLAN, Mobile DSL, WLL Receiver
Features
o Ultra-Low Power
27.3mW (Normal Operation: 22Msps)
1.8µW (Shutdown Mode)
o Excellent Dynamic Performance
48.6dB/47.2dB SNR at f_IN = 5.5MHz/125MHz
70dBc/69dBc SFDR at f_IN = 5.5MHz/125MHz
o 2.7V to 3.6V Single Analog Supply
o 1.8V to 3.6V TTL/CMOS-Compatible Digital
Outputs
o Fully Differential or Single-Ended Analog Inputs
o Internal/External Reference Option
o Multiplexed CMOS-Compatible Tri-State Outputs
o 28-Pin Thin QFN Package
o Evaluation Kit Available (Order MAX1193EVKIT)
Ordering Information
PART
TEMP RANGE
MAX1192ETI-T
-40°C to +85°C
*EP = Exposed paddle.
PIN-PACKAGE
28 Thin QFN-EP*
(5mm x 5mm)
TOP VIEW
Pin Configuration
INA- 1
INA+ 2
GND 3
CLK 4
GND 5
INB+ 6
INB- 7
MAX1192
EXPOSED PADDLE
21 D0
20 D1
19 D2
18 D3
17 A/B
16 D4
15 D5
5mm x 5mm THIN QFN
________________________________________________________________ Maxim Integrated Products 1
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1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.