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1191 Datasheet

  • 1191

  • Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC

  • 27頁

  • MAXIM   MAXIM

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19-2836; Rev 1; 9/03
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
General Description
The MAX1191 is an ultra-low-power, dual, 8-bit,
7.5Msps 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 MAX1191 delivers a typical signal-to-noise and dis-
tortion (SINAD) of 48.6dB at an input frequency of
1.875MHz and a sampling rate of 7.5Msps while con-
suming only 12mW. 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 operating power, the MAX1191 features three
power-down modes to conserve power during idle peri-
ods. Excellent dynamic performance, ultra-low power,
and small size make the MAX1191 ideal for applica-
tions in imaging, instrumentation, and digital communi-
cations.
An internal 1.024V precision bandgap reference sets
the full-scale range of the ADC to 鹵0.512V. A flexible
reference structure allows the MAX1191 to use its inter-
nal reference or accept an externally applied reference
for applications requiring increased accuracy.
The MAX1191 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 MAX1191 is available in a 5mm
脳
5mm, 28-pin thin QFN package, and is specified for
the extended industrial (-40擄C to +85擄C) temperature
range.
For higher sampling frequency applications, refer to the
MAX1195鈥揗AX1198 dual 8-bit ADCs. Pin-compatible
versions of the MAX1191 are also available. Refer to the
MAX1192 data sheet for 22Msps, and the MAX1193
data sheet for 45Msps.
Features
o
Ultra-Low Power
12mW (Normal Operation: 7.5Msps)
0.3碌W (Shutdown Mode)
o
Excellent Dynamic Performance
48.7dB SNR at f
IN
= 1.875MHz
69dBc 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 Tri-State Outputs
o
28-Pin Thin QFN Package
o
Evaluation Kit Available (Order MAX1193EVKIT)
MAX1191
Ordering Information
PART
MAX1191ETI-T
TEMP RANGE
-40擄C to +85擄C
PIN-PACKAGE
28 Thin QFN-EP*
(5mm x 5mm)
*EP = Exposed paddle.
Pin Configuration
TOP VIEW
REFIN
REFN
REFP
COM
PD0
PD1
V
DD
28
27
26
25
24
23
22
INA-
Applications
Ultrasound and Medical Imaging
IQ Baseband Sampling
Battery-Powered Portable Instruments
Low-Power Video
WLAN, Mobile DSL, WLL Receiver
1
2
3
4
5
6
7
8
EXPOSED PADDLE
21
20
19
D0
D1
D2
D3
A/B
D4
D5
INA+
GND
CLK
GND
INB+
INB-
MAX1191
18
17
16
15
12
13
D7
10
11
GND
V
DD
V
DD
5mm x 5mm THIN QFN
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
OGND
OV
DD
D6
14
9

1191 產(chǎn)品屬性

  • 1

  • 電池產(chǎn)品

  • 電池座，夾，觸點(diǎn)

  • 1100

  • 圓柱形，座

  • 座（開口）

  • AA

  • 3

  • -

  • 底座

  • 焊片

  • -

  • -

  • P671-ND - BATTERY 1.5V ALKALINE AA 4 PACKP673-ND - BATTERY 1.5V ALKALINE AA 2 PACKP675-ND - BATTERY 1.5V ALKALINE AATL-4903-ND - BATT LTH AA 3.6VLR6XWA/C-ND - BATT IND ALKALINE AA SIZEP648-ND - BATTERY IND ALKALINE AAP646-ND - BATTERY IND ALKALINE AA SIZESY134-ND - BATT NIMH 1.2V AA 2300MAH BUTTONSY115-ND - BATT NICAD 1.2V AA 700MAHSY114-ND - BATT NICAD 1.2V AA 700MAH更多...

  • 1191K

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