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參數資料
| 型號： | 1191 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | ADC |
| 英文描述： | Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC |
| 中文描述： | 超低功耗，7.5Msps，雙8位ADC |
| 文件頁數： | 1/27頁 |
| 文件大?。?/td> | 492K |
| 代理商： | 1191 |
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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 ±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
×
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 MAX1191 are also available. Refer to the
MAX1192 data sheet for 22Msps, 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
12mW (Normal Operation: 7.5Msps)
0.3μW (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)
M
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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1
MAX1191
5mm x 5mm THIN QFN
TOP VIEW
INA+
EXPOSED PADDLE
INA-
GND
CLK
GND
INB+
INB-
V
D
R
R
C
R
P
P
D0
D1
D2
D3
A/B
D4
D5
D
D
O
D
O
G
V
D
V
D
Pin Configuration
Ordering Information
19-2836; Rev 1; 9/03
PART
TEMP RANGE
PIN-PACKAGE
MAX1191ETI-T
-40
°
C to +85
°
C
28 Thin QFN-EP*
(5mm x 5mm)
*EP = Exposed paddle.
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