19-5099; Rev 0; 1/10
Ultra-Low-Power, 10Msps, 8-Bit ADC
MAX91
General Description
Features
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.
o Ultra-Low Power
15.3mW (Normal Operation: 10Msps)
2µW (Shutdown Mode)
o Excellent Dynamic Performance
48.6dB SNR at f = 1.875MHz
IN
70dBc SFDR at f = 1.875MHz
IN
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+)
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.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX19191ETI+
MAX19191ETI/V+**
-40°C to +85°C 28 Thin QFN-EP*
-40°C to +85°C 28 Thin QFN-EP*
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.
+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
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.
TOP VIEW
Applications
Ultrasound and Medical Imaging
Battery-Powered Portable Instruments
Low-Power Video
IN-
IN+
D0
1
2
3
4
5
6
7
21
20
19
18
17
16
+
D1
GND
CLK
GND
GND
GND
D2
WLAN, Mobile DSL, WLL Receiver
Digital Audio Receiver Front-End
D3
MAX19191
DVAL
D4
EXPOSED PAD
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.