MAX19191 Datasheet, PDF (1/20 Pages) Maxim Integrated Products – Ultra-Low-Power, 10Msps, 8-Bit ADC

19-5099; Rev 0; 1/10
Ultra-Low-Power, 10Msps, 8-Bit ADC
General Description
The MAX19191 is an ultra-low-power, 8-bit, 10Msps
analog-to-digital converter (ADC). The device features
a fully differential wideband track-and-hold (T/H) input.
This input has a 440MHz bandwidth and accepts fully
differential or single-ended signals. The MAX19191
delivers a typical signal-to-noise and distortion (SINAD)
of 48.6dB at an input frequency of 1.875MHz and a
sampling rate of 10Msps while consuming only
15.3mW. This ADC operates from a 2.7V to 3.6V analog
power supply. A separate 1.8V to 3.6V supply powers
the digital output driver. In addition to ultra-low operat-
ing power, the MAX19191 features three power-down
modes to conserve power during idle periods. Excellent
dynamic performance, ultra-low power, and small size
make the MAX19191 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 refer-
ence structure allows the MAX19191 to use its internal
reference or accept an externally applied reference for
applications requiring increased accuracy.
The MAX19191 features parallel, CMOS-compatible
three-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 different logic
levels. The MAX19191 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. For a dual-channel,
pin-compatible version, refer to the MAX19192 data
sheet.
Applications
Ultrasound and Medical Imaging
Battery-Powered Portable Instruments
Low-Power Video
WLAN, Mobile DSL, WLL Receiver
Digital Audio Receiver Front-End
Features
o Ultra-Low Power
15.3mW (Normal Operation: 10Msps)
2µW (Shutdown Mode)
o Excellent Dynamic Performance
48.6dB SNR at f_IN = 1.875MHz
70dBc SFDR at f_IN = 1.875MHz
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 Three-State Outputs
o 28-Pin Thin QFN Package
o Evaluation Kit Available (Order MAX19191EVKIT+)
Ordering Information
PART
MAX19191ETI+
MAX19191ETI/V+**
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 Thin QFN-EP*
28 Thin QFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
/V denotes an automotive qualified part.
**Future product—contact factory for availability.
Pin Configuration
TOP VIEW
IN- 1
IN+ 2
GND 3
CLK 4
GND 5
GND 6
GND 7
+
MAX19191
EXPOSED PAD
21 D0
20 D1
19 D2
18 D3
17 DVAL
16 D4
15 D5
5mm x 5mm THIN QFN
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.