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MAX1185 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX1185
Description  Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1185 Datasheet(HTML) 1 Page - Maxim Integrated Products

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General Description
The MAX1185 is a +3V, dual 10-bit analog-to-digital
converter (ADC) featuring fully-differential wideband
track-and-hold (T/H) inputs, driving two pipelined,
nine-stage ADCs. The MAX1185 is optimized for low-
power, high dynamic performance applications in
imaging, instrumentation, and digital communication
applications. This ADC operates from a single +2.7V to
+3.6V supply, consuming only 105mW while delivering
a typical signal-to-noise ratio (SNR) of 59.5dB at an
input frequency of 7.5MHz and a sampling rate of
20Msps. Digital outputs A and B are updated alternat-
ing on the rising (CHA) and falling (CHB) edge of the
clock. The T/H driven input stages incorporate 400MHz
(-3dB) input amplifiers. The converters may also be
operated with single-ended inputs. In addition to low
operating power, the MAX1185 features a 2.8mA sleep
mode as well as a 1µA power-down mode to conserve
power during idle periods.
An internal +2.048V precision bandgap reference sets
the full-scale range of the ADC. A flexible reference
structure allows the use of this internal or an externally
derived reference, if desired for applications requiring
increased accuracy or a different input voltage range.
The MAX1185 features parallel, multiplexed, CMOS-
compatible three-state outputs. The digital output for-
mat can be set to two’s complement or straight offset
binary through a single control pin. The device provides
for a separate output power supply of +1.7V to +3.6V
for flexible interfacing. The MAX1185 is available in a
7mm x 7mm, 48-pin TQFP package, and is specified
for the extended industrial (-40°C to +85°C) tempera-
ture range.
Pin-compatible, nonmultiplexed. high-speed versions of
the MAX1185 are also available. Please refer to the
MAX1180 data sheet for 105Msps, the MAX1181 data
sheet for 80Msps, the MAX1182 data sheet for 65Msps,
the MAX1183 data sheet for 40Msps, and the MAX1184
data sheet for 20Msps.
Applications
High Resolution Imaging
I/Q Channel Digitization
Multichannel IF Sampling
Instrumentation
Video Application
Ultrasound
Features
o Single +3V Operation
o Excellent Dynamic Performance:
59.5dB SNR at fIN = 7.5MHz
74dB SFDR at fIN = 7.5MHz
o Low Power:
35mA (Normal Operation)
2.8mA (Sleep Mode)
1µA (Shutdown Mode)
o 0.02dB Gain and 0.25° Phase Matching
o Wide ±1Vp-p Differential Analog Input Voltage
Range
o 400MHz, -3dB Input Bandwidth
o On-Chip +2.048V Precision Bandgap Reference
o Single 10-Bit Bus for Multiplexed, Digital Outputs
o User-Selectable Output Format – Two’s
Complement or Offset Binary
o 48-Pin TQFP Package with Exposed Paddle For
Improved Thermal Dissipation
Dual 10-Bit, 20Msps, +3V, Low-Power ADC with
Internal Reference and Multiplexed Parallel Outputs
________________________________________________________________ Maxim Integrated Products
1
D1A/B
D0A/B
OGND
OVDD
OVDD
OGND
A/B
N.C.
N.C.
N.C.
N.C.
N.C.
COM
VDD
GND
INA+
INA-
VDD
GND
INB-
INB+
GND
VDD
CLK
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
48-TQFP-EP
MAX1185
Pin Configuration
19-2175; Rev 0; 10/01
Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX1185ECM
-40
°C to +85°C
48 TQFP-EP
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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