MAX1084BCSA Maxim Integrated, MAX1084BCSA Datasheet

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MAX1084BCSA

Manufacturer Part Number
MAX1084BCSA
Description
Analog to Digital Converters - ADC
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX1084BCSA

Number Of Channels
1
Architecture
SAR
Conversion Rate
400 KSPs
Resolution
10 bit
Input Type
Single-Ended
Snr
60 dB
Interface Type
QSPI, Serial (SPI, Microwire)
Operating Supply Voltage
4.5 V to 5.5 V
Maximum Operating Temperature
+ 70 C
Package / Case
SOIC-8 Narrow
Maximum Power Dissipation
471 mW
Minimum Operating Temperature
0 C
Number Of Converters
1
Voltage Reference
2.5 V

Available stocks

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Part Number
Manufacturer
Quantity
Price
Part Number:
MAX1084BCSA+
Manufacturer:
Maxim
Quantity:
97
The MAX1084/MAX1085 10-bit analog-to-digital convert-
ers (ADCs) combine a high-bandwidth track/hold, a serial
interface with high conversion speed, an internal +2.5V
reference, and low power consumption. The MAX1084
operates from a single +4.5V to +5.5V supply; the
MAX1085 operates from a single +2.7V to +3.6V supply.
The 3-wire serial interface connects directly to
SPI™/QSPI™/MICROWIRE™ devices without external
logic. The devices use an external serial-interface clock to
perform successive-approximation analog-to-digital con-
versions.
Low power combined with ease of use and small pack-
age size make these converters ideal for remote-sensor
and data-acquisition applications, or for other circuits with
demanding power consumption and space requirements.
The MAX1084/MAX1085 are available in 8-pin SO
packages.
These devices are pin-compatible, higher-speed versions
of the MAX1242/MAX1243; for more information, refer to
the respective data sheets.
19-1686; Rev 1; 12/10
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
TOP VIEW
Portable Data Logging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Pen Digitizers
Process Control
400ksps/300ksps, Single-Supply, Low-Power,
Serial 10-Bit ADCs with Internal Reference
SHDN
V
REF
AIN
________________________________________________________________ Maxim Integrated Products
DD
1
2
3
4
General Description
+
MAX1084
MAX1085
Pin Configuration
SO
Applications
8
7
6
5
SCLK
CS
DOUT
GND
♦ Single-Supply Operation
♦ 10-Bit Resolution
♦ 400ksps Sampling Rate (MAX1084)
♦ Internal Track/Hold
♦ Internal +2.5V Reference
♦ Low Power: 2.5mA (400ksps)
♦ SPI/QSPI/MICROWIRE 3-Wire Serial Interface
♦ Pin-Compatible, High-Speed Upgrade to
♦ 8-Pin SO Package
+Denotes a lead(Pb)-free/RoHS-compliant package.
MAX1084ACSA+
MAX1084BCSA+
MAX1084AESA+
MAX1084BESA+
MAX1085ACSA+
MAX1085BCSA+
MAX1085AESA+
MAX1085BESA+
MAX1242/MAX1243
SHDN
SCLK
REF
AIN
CS
+4.5V to +5.5V (MAX1084)
+2.7V to +3.6V (MAX1085)
PART
7
8
3
2
4
REFERENCE
CONTROL
LOGIC
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
2.5V
T/H
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
RANGE
Ordering Information
TEMP
Functional Diagram
GND
V
10-BIT
DD
SAR
1
5
CLOCK
INT
PIN-
PACKAGE
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
MAX1084
MAX1085
REGISTER
OUTPUT
SHIFT
Features
6
(LSB)
±1/2
±1
±1/2
±1
±1/2
±1
±1/2
±1
INL
DOUT
1

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MAX1084BCSA Summary of contents

Page 1

... Sampling Rate (MAX1084) ♦ Internal Track/Hold ♦ Internal +2.5V Reference ♦ Low Power: 2.5mA (400ksps) ♦ SPI/QSPI/MICROWIRE 3-Wire Serial Interface ♦ Pin-Compatible, High-Speed Upgrade to MAX1242/MAX1243 ♦ 8-Pin SO Package PART Applications MAX1084ACSA+ MAX1084BCSA+ MAX1084AESA+ MAX1084BESA+ MAX1085ACSA+ MAX1085BCSA+ MAX1085AESA+ MAX1085BESA+ +Denotes a lead(Pb)-free/RoHS-compliant package ...

Page 2

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference ABSOLUTE MAXIMUM RATINGS V to GND .............................................................-0.3V to +6V DD AIN to GND................................................-0. REF to GND ...............................................-0. Digital Inputs to GND...............................................-0.3V to +6V DOUT to GND............................................-0.3V to ...

Page 3

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference ELECTRICAL CHARACTERISTICS—MAX1084 (continued +4.5V to +5.5V 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), 4.7µF capacitor at REF SCLK T , unless otherwise noted. Typical ...

Page 4

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference ELECTRICAL CHARACTERISTICS—MAX1085 (continued +2.7V to +3.6V 4.8MHz, 50% duty cycle, 16 clocks/conversion cycle (300ksps), 4.7µF capacitor at REF SCLK T , unless otherwise noted. Typical ...

Page 5

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference TIMING CHARACTERISTICS—MAX1084 (Figures +4.5V to +5.5V PARAMETER SYMBOL SCLK Period t CP SCLK Pulse-Width High t CH SCLK Pulse-Width Low ...

Page 6

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference (MAX1084 +5.0V 6.4MHz; MAX1055 SCLK T = +25°C, unless otherwise noted.) A INTEGRAL NONLINEARLITY vs. DIGITAL OUTPUT CODE 0.10 0.08 0.06 0.04 0.02 0 -0.02 ...

Page 7

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference (MAX1084 +5.0V 6.4MHz; MAX1085 SCLK T = +25°C, unless otherwise noted.) A INTERNAL REFERENCE VOLTAGE vs. SUPPLY VOLTAGE 2.510 2.508 2.506 2.504 2.502 2.500 2.498 ...

Page 8

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference DOUT 6kΩ DGND a) HIGH AND Figure 1. Load Circuits for DOUT Enable Time DOUT 6kΩ DGND HIGH-Z OH Figure ...

Page 9

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference DAC, which in turn forms a digital representation of the analog input signal. At the conversion’s end, the input side of C switches back to AIN, and C HOLD charges to ...

Page 10

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference To start a conversion, pull CS low. At CS’s falling edge, the T/H enters its hold mode and a conversion is initiat- ed. Data can then be shifted out serially with ...

Page 11

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference SUPPLY CURRENT vs. CONVERSION RATE 10,000 V 3. DOUT = FS 1000 = ∞ 10pF L 100 10 1 0.1 0 100 1k ...

Page 12

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference OUTPUT CODE FULL-SCALE TRANSITION 11…111 11…110 11…101 00…011 00…010 00…001 00…000 INPUT VOLTAGE (LSB) Figure 10. Unipolar Transfer Function, Full Scale (FS Zero Scale (ZS) ...

Page 13

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference Figure 14 shows the recommended system ground con- nections. Establish a single-point analog ground (“star” ground point) at GND, separate from the logic ground. Connect all other analog grounds and GND ...

Page 14

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference SUPPLIES 10Ω 4.7µF 0.1µ GND MAX1084 MAX1085 *OPTIONAL Figure 14. Power-Supply Grounding Condition ✕ SNR = (6. 1.76)dB In reality, there are other ...

Page 15

Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show ...

Page 16

... 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products ...

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