Rainbow-electronics MAX1183 Manual de usuario

Busca en linea o descarga Manual de usuario para Sensores Rainbow-electronics MAX1183. Rainbow Electronics MAX1183 User Manual Manual de usuario

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General Description
The MAX1183 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 MAX1183 is optimized for low-power,
high dynamic performance applications in imaging,
instrumentation, and digital communication applica-
tions. This ADC operates from a single +2.7V to +3.6V
supply, consuming only 120mW while delivering a typi-
cal signal-to-noise ratio (SNR) of 59.6dB at an input fre-
quency of 20MHz and a sampling rate of 40Msps. 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 MAX1183 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 MAX1183 features parallel, CMOS-compatible
three-state outputs. The digital output format 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 inter-
facing. The MAX1183 is available in a 7mm
7mm, 48-
pin TQFP package, and is specified for the extended
industrial (-40°C to +85°C) temperature range.
Pin-compatible lower and higher speed versions of the
MAX1183 are also available. Refer to the MAX1180
data sheet for 105Msps, the MAX1181 data sheet for
80Msps, the MAX1182 data sheet for 65Msps, and the
MAX1184 data sheet for 20Msps. In addition to these
speed grades, this family includes a multiplexed output
version, for which digital data is presented time-inter-
leaved and on a single, parallel 10-bit output port.
Applications
High-Resolution Imaging
I/Q Channel Digitization
Multichannel IF Sampling
Instrumentation
Video Application
Ultrasound
Features
Single +3V Operation
Excellent Dynamic Performance
59.6dB SNR at f
IN
= 20MHz
73dB SFDR at f
IN
= 20MHz
Low Power
40mA (Normal Operation)
2.8mA (Sleep Mode)
1µA (Shutdown Mode)
0.02dB Gain and 0.25° Phase Matching
Wide ±1Vp-p Differential Analog Input Voltage
Range
400MHz -3dB Input Bandwidth
On-Chip +2.048V Precision Bandgap Reference
User-Selectable Output Format—Two’s
Complement or Offset Binary
48-Pin TQFP Package with Exposed Paddle for
Improved Thermal Dissipation
MAX1183
Dual 10-Bit, 40Msps, +3V, Low-Power ADC with
Internal Reference and Parallel Outputs
________________________________________________________________ Maxim Integrated Products 1
D1A
D0A
OGND
OV
DD
OV
DD
OGND
D0B
D1B
D2B
D3B
D4B
D5B
COM
V
DD
GND
INA+
INA-
V
DD
GND
INB-
INB+
GND
V
DD
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
MAX1183
GND
V
DD
GND
V
DD
T/B
SLEEP
PD
OE
D9B
D8B
D7B
D6B
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
REFN
REFP
REFIN
REFOUT
D9A
D8A
D7A
D6A
D5A
D4A
D3A
D2A
Pin Configuration
Ordering Information
19-2173; Rev 0; 9/01
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.
Functional Diagram appears at end of data sheet.
PART TEMP. RANGE PIN-PACKAGE
MAX1183ECM -40°C to +85°C 48 TQFP-EP
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1 2 3 4 5 6 ... 17 18

Indice de contenidos

Pagina 1 - Ordering Information

General DescriptionThe MAX1183 is a +3V, dual 10-bit analog-to-digitalconverter (ADC) featuring fully differential widebandtrack-and-hold (T/H) inputs

Pagina 2 - ELECTRICAL CHARACTERISTICS

MAX1183Detailed DescriptionThe MAX1183 uses a nine-stage, fully differential,pipelined architecture (Figure 1) that allows for high-speed conversion w

Pagina 3

Input Track-and-Hold (T/H) CircuitsFigure 2 displays a simplified functional diagram of theinput track-and-hold (T/H) circuits in both track-and-hold

Pagina 4 - ±0.2 mV/V

MAX1183SNRdB= 20 ✕ log10(1 / [2π ✕ fIN✕ tAJ])where fINrepresents the analog input frequency andtAJis the time of the aperture jitter.Clock jitter is e

Pagina 5 - MAX1183 toc03

Figure 4 displays the timing relationship between out-put enable and data output valid, as well as power-down/wake-up and data output valid.Power-Down

Pagina 6

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel Outputs14 _________________________________________________________

Pagina 7 - MAX1183 toc15

quadrature (Q) carrier component, where the Q compo-nent is 90-degree phase-shifted with respect to the in-phase component. At the receiver, the QAM s

Pagina 8

MAX1183(1Ω to 5Ω), a ferrite bead, or a direct short.Alternatively, all ground pins could share the sameground plane, if the ground plane is sufficien

Pagina 9 - Pin Description

nents minus the fundamental, the first five harmonics,and the DC offset.Signal-to-Noise Plus Distortion (SINAD)SINAD is computed by taking the ratio o

Pagina 10 - Pin Description (continued)

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel OutputsMaxim cannot assume responsibility for use of any circuitry

Pagina 11 - Configurations

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel Outputs2 __________________________________________________________

Pagina 12 - System Timing Requirements

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel Outputs____________________________________________________________

Pagina 13 - Applications Information

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel Outputs4 __________________________________________________________

Pagina 14

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel Outputs____________________________________________________________

Pagina 15 - Board Layout

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel Outputs6 __________________________________________________________

Pagina 16 - Definitions

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel Outputs____________________________________________________________

Pagina 17 - Functional Diagram

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel Outputs8 __________________________________________________________

Pagina 18 - Package Information

MAX1183Dual 10-Bit, 40Msps, +3V, Low-Power ADC withInternal Reference and Parallel Outputs____________________________________________________________

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