MAX1184ECM+D Maxim Integrated Products, MAX1184ECM+D Datasheet

IC ADC 10BIT 20MSPS DUAL 48-TQFP

MAX1184ECM+D

Manufacturer Part Number
MAX1184ECM+D
Description
IC ADC 10BIT 20MSPS DUAL 48-TQFP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1184ECM+D

Number Of Bits
10
Sampling Rate (per Second)
20M
Data Interface
Parallel
Number Of Converters
2
Power Dissipation (max)
150mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
Number Of Adc Inputs
2
Architecture
SAR
Conversion Rate
20 MSPs
Resolution
10 bit
Input Type
Differential
Interface Type
Parallel
Voltage Reference
Internal 2.048 V or External
Supply Voltage (max)
3 V
Maximum Power Dissipation
2430 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX1184 is a 3V, dual 10-bit analog-to-digital con-
verter (ADC) featuring fully-differential wideband track-
and-hold (T/H) inputs, driving two pipelined, 9-stage
ADCs. The MAX1184 is optimized for low-power, high-
dynamic performance applications in imaging, instru-
mentation, and digital communication applications. This
ADC operates from a single 2.7V to 3.6V supply, con-
suming 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. 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 MAX1184
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 the internal or an externally
derived reference, if desired for applications requiring
increased accuracy or a different input voltage range.
The MAX1184 features parallel, CMOS-compatible
three-state outputs. The digital output format is set to
two’s complement or straight offset binary through a sin-
gle control pin. The device provides for a separate out-
put power supply of 1.7V to 3.6V for flexible interfacing.
The MAX1184 is available in a 7mm x 7mm, 48-pin
TQFP package, and is specified for the extended
industrial (-40°C to +85°C) temperature range.
Pin-compatible higher speed versions of the MAX1184
are also available. See Table 2 at end of data sheet for a
list of pin-compatible versions. Refer to the MAX1180
data sheet for 105Msps, the MAX1181 data sheet for
80Msps, the MAX1182 data sheet for 65Msps, and the
MAX1183 data sheet for 40Msps. In addition to these
speed grades, this family includes a 20Msps multi-
plexed output version (MAX1185), for which digital data
is presented time-interleaved on a single, parallel 10-bit
output port.
19-2174; Rev 1; 7/06
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.
Dual 10-Bit, 20Msps, 3V, Low-Power ADC with
High-Resolution Imaging
I/Q Channel Digitization
Multchannel IF Undersampling
Instrumentation
Video Application
________________________________________________________________ Maxim Integrated Products
Internal Reference and Parallel Outputs
General Description
Applications
♦ Single 3V Operation
♦ Excellent Dynamic Performance:
♦ Low Power:
♦ 0.02dB Gain and 0.25° Phase Matching (typ)
♦ Wide ±1V
♦ 400MHz -3dB Input Bandwidth
♦ On-Chip 2.048V Precision Bandgap Reference
♦ User-Selectable Output Format—Two’s
♦ 48-Pin TQFP Package with Exposed Paddle for
♦ Evaluation Kit Available
*EP = Exposed paddle.
+Denotes lead-free package.
NOTE: THE PIN 1 INDICATOR FOR LEAD-FREE PACKAGE IS REPLACED BY A “+” SIGN.
MAX1184ECM
MAX1184ECM+
Voltage Range
Complement or Offset Binary
Improved Thermal Dissipation
COM
35mA (Normal Operation)
2.8mA (Sleep Mode)
1µA (Shutdown Mode)
GND
INA+
GND
INB+
GND
INA-
INB-
CLK
V
V
V
59.5dB SNR at f
74dB SFDR at f
DD
DD
DD
PART
10
11
12
1
2
3
4
5
6
7
8
9
P-P
Differential Analog Input
EP
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
IN
Ordering Information
IN
48 TQFP-EP
= 7.5MHz
= 7.5MHz
MAX1184
Pin Configuration
PIN-PACKAGE
48 TQFP-EP*
48 TQFP-EP*
Features
36
35
34
33
32
31
30
29
28
27
26
25
D1A
D0A
OGND
OV
OV
OGND
D0B
D1B
D2B
D3B
D4B
D5B
DD
DD
1

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MAX1184ECM+D Summary of contents

Page 1

... High-Resolution Imaging I/Q Channel Digitization Multchannel IF Undersampling Instrumentation Video Application ________________________________________________________________ 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. ♦ Single 3V Operation ♦ Excellent Dynamic Performance: 59.5dB SNR at f 74dB SFDR at f ♦ ...

Page 2

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ABSOLUTE MAXIMUM RATINGS V , OVDD to GND...............................................-0.3V to +3.6V DD OGND to GND.......................................................-0.3V to +0.3V INA+, INA-, INB+, INB- to GND ...............................-0. REFIN, REFOUT, REFP, ...

Page 3

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ELECTRICAL CHARACTERISTICS (continued 3V 2.5V, 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through ...

Page 4

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ELECTRICAL CHARACTERISTICS (continued 3V 2.5V, 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through ...

Page 5

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ELECTRICAL CHARACTERISTICS (continued 3V 2.5V, 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through ...

Page 6

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ( 2.5V 2.048V, differential input at -0.5dBFS REFIN FFT PLOT CHA (DIFFERENTIAL INPUT, 8192-POINT DATA RECORD ...

Page 7

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ( 2.5V 2.048V, differential input at -0.5dBFS REFIN FULL-POWER INPUT BANDWIDTH vs. ANALOG INPUT FREQUENCY, SINGLE-ENDED ...

Page 8

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ( 2.5V 2.048V, differential input at -0.5dBFS REFIN OFFSET ERROR vs. TEMPERATURE 0.1 0 -0.1 CHB -0.2 -0.3 CHA ...

Page 9

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs ( 2.5V 2.048V, differential input at -0.5dBFS REFIN INTERNAL REFERENCE VOLTAGE vs. TEMPERATURE 2.015 2.010 2.005 2.000 1.995 1.990 ...

Page 10

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs PIN NAME 21 D9B Three-State Digital Output, Bit 9 (MSB), Channel B 22 D8B Three-State Digital Output, Bit 8, Channel B 23 D7B Three-State Digital Output, Bit 7, ...

Page 11

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs Detailed Description The MAX1184 uses a 9-stage, fully-differential pipelined architecture (Figure 1) that allows for high- speed conversion while minimizing power consump- tion. Samples taken at the inputs ...

Page 12

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs INTERNAL COM BIAS S5a S2a C1a S3a S4a INA+ C2a S4c S1 INA- S4b C2b C1b S3b S5b S2b INTERNAL COM BIAS HOLD TRACK INTERNAL BIAS COM S5a ...

Page 13

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs Clock Input (CLK) The MAX1184’s CLK input accepts CMOS-compatible clock signals. Since the interstage conversion of the device depends on the repeatability of the rising and falling edges ...

Page 14

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs Table 1. MAX1184 Output Codes For Differential Inputs DIFFERENTIAL INPUT VOLTAGE 511/512 +FULL SCALE - 1LSB REF V x 1/512 REF 1/512 ...

Page 15

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs 300Ω 300Ω +5V 0.1µF INPUT MAX4108 0.1µF -5V 300Ω 300Ω 300Ω +5V 0.1µF INPUT MAX4108 0.1µF -5V 300Ω 300Ω Figure 5. Typical Application for Single-Ended to Differential Conversion ...

Page 16

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs 25Ω 22pF 0.1µ N.C. 2.2µF 0.1µ MINICIRCUITS TT1–6 25Ω 22pF 25Ω 22pF 0.1µ ...

Page 17

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs Figure 8. Typical QAM Application, Using the MAX1184 Typical QAM Demodulation Application The most frequently used modulation technique for digi- tal communications applications is probably the quadra- ture ...

Page 18

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs Differential Nonlinearity (DNL) Differential nonlinearity is the difference between an actual step width and the ideal value of 1LSB. A DNL error specification of less than 1LSB guarantees ...

Page 19

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs V DD GND INA+ T/H INA- CLK INB+ T/H INB- REFOUT 19 ______________________________________________________________________________________ PIPELINE DEC ADC CONTROL PIPELINE DEC ADC REFERENCE REFN COM REFP REFIN Functional Diagram OGND ...

Page 20

Dual 10-Bit, 20Msps, 3V, Low-Power ADC with Internal Reference and Parallel Outputs (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 20 ______________________________________________________________________________________ Package Information PACKAGE ...

Page 21

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 21 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products ...

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