MAX1082AEUE+ Maxim Integrated Products, MAX1082AEUE+ Datasheet

IC ADC 10BIT 400KSPS 16-TSSOP

MAX1082AEUE+

Manufacturer Part Number
MAX1082AEUE+
Description
IC ADC 10BIT 400KSPS 16-TSSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1082AEUE+

Number Of Bits
10
Sampling Rate (per Second)
400k
Data Interface
MICROWIRE™, QSPI™, Serial, SPI™
Number Of Converters
1
Power Dissipation (max)
533mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX1082/MAX1083 10-bit analog-to-digital convert-
ers (ADCs) combine a 4-channel analog-input multiplexer,
high-bandwidth track/hold (T/H), and serial interface with
high conversion speed and low power consumption. The
MAX1082 operates from a single +4.5V to +5.5V supply;
the MAX1083 operates from a single +2.7V to +3.6V sup-
ply. Both devices’ analog inputs are software configurable
for unipolar/bipolar and single-ended/pseudo-differential
operation.
The 4-wire serial interface connects directly to SPI™/QSPI™
and MICROWIRE™ devices without external logic. A serial
strobe output allows direct connection to TMS320-family
digital signal processors. The MAX1082/ MAX1083 use an
external serial-interface clock to perform successive-
approximation analog-to-digital conversions. The devices
feature an internal +2.5V reference and a reference-buffer
amplifier with a ±1.5% voltage-adjustment range. An
external reference with a 1V to V
used.
The MAX1082/MAX1083 provide a hard-wired SHDN pin
and four software-selectable power modes (normal opera-
tion, reduced power (REDP), fast power-down (FASTPD),
and full power-down (FULLPD)). These devices can be
programmed to shut down automatically at the end of a
conversion or to operate with reduced power. When using
the power-down modes, accessing the serial interface
automatically powers up the devices, and the quick turn-
on time allows them to be shut down between all conver-
sions.
The MAX1082/MAX1083 are available in 16-pin TSSOP
packages.
Typical Operating Circuit appears at end of data sheet.
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
19-1690 Rev 0; 5/00
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Portable Data Logging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Pen Digitizers
Process Control
300ksps/400ksps, Single-Supply, 4-Channel,
Serial 10-Bit ADCs with Internal Reference
________________________________________________________________ Maxim Integrated Products
General Description
DD
Applications
range may also be
o 4-Channel Single-Ended or 2-Channel
o Internal Multiplexer and Track/Hold
o Single-Supply Operation
o Internal +2.5V Reference
o 400kHz Sampling Rate (MAX1082)
o Low Power: 2.5mA (400ksps)
o SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire
o Software-Configurable Unipolar or Bipolar Inputs
o 16-Pin TSSOP Package
Ordering Information continued at end of data sheet.
MAX1082ACUE
MAX1082BCUE
MAX1082AEUE
Pseudo-Differential Inputs
Serial Interface
TOP VIEW
+4.5V to +5.5V (MAX1082)
+2.7V to +3.6V (MAX1083)
PART
SHDN
COM
V
CH0
CH1
CH2
CH3
REF
1.3mA (REDP)
0.9mA (FASTPD)
2µA (FULLPD)
DD1
-40°C to +85°C
0°C to +70°C
0°C to +70°C
1
2
3
4
5
6
7
8
RANGE
TEMP.
Ordering Information
MAX1082
MAX1083
TSSOP
Pin Configuration
PIN-
PACKAGE
16 TSSOP
16 TSSOP
16 TSSOP
16
15
14
13
12
11
10
9
V
SCLK
CS
DIN
SSTRB
DOUT
GND
REFADJ
DD2
Features
(LSB)
±1/2
±1/2
INL
±1
1

Related parts for MAX1082AEUE+

MAX1082AEUE+ Summary of contents

Page 1

... Typical Operating Circuit appears at end of data sheet. SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. o 4-Channel Single-Ended or 2-Channel ...

Page 2

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference ABSOLUTE MAXIMUM RATINGS V to GND............................................................ -0.3V to +6V DD_ ....................................................... -0.3V to +0.3V DD_ DD2 CH0–CH3, COM to GND ............................ -0. REF, REFADJ to GND ...

Page 3

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference ELECTRICAL CHARACTERISTICS—MAX1082 (continued +4.5V to +5.5V, COM = GND, f DD1 DD2 at REF, REFADJ = DD1 A MIN PARAMETER ...

Page 4

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference ELECTRICAL CHARACTERISTICS—MAX1082 (continued +4.5V to +5.5V, COM = GND, f DD1 DD2 at REF, REFADJ = DD1 A MIN MAX ...

Page 5

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference ELECTRICAL CHARACTERISTICS—MAX1083 (continued +2.7V to +3.6V, COM = GND, f DD1 DD2 +2.5V at REF, REFADJ = DD1 A MIN PARAMETER SYMBOL ...

Page 6

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference ELECTRICAL CHARACTERISTICS—MAX1083 (continued +2.7V to +3.6V, COM = GND, f DD1 DD2 +2.5V at REF, REFADJ = DD1 A MIN PARAMETER SYMBOL ...

Page 7

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference TIMING CHARACTERISTICS—MAX1083 (Figures +2.7V to +3.6V; T DD1 DD2 PARAMETER SYMBOL SCLK Period t SCLK Pulse Width High t SCLK Pulse Width Low ...

Page 8

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference (MAX1082 5.0V 6.4MHz; MAX1083: V DD1 DD2 SCLK at REF, 0.01µF capacitor at REFADJ INTEGRAL NONLINEARITY vs. DIGITAL OUTPUT CODE 0.20 0.15 0.10 ...

Page 9

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference (MAX1082 5.0V, f DD1 DD2 SCLK at REF, 0.01µF capacitor at REFADJ REFERENCE VOLTAGE vs. TEMPERATURE 2.5002 2.5000 MAX1082 2.4998 MAX1083 2.4996 2.4994 2.4992 2.4990 ...

Page 10

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference PIN NAME 1 V Positive Supply Voltage DD1 2–5 CH0–CH3 Sampling Analog Inputs Ground Reference for Analog Inputs. COM sets zero-code voltage in single-ended mode. Must be 6 COM stable to ...

Page 11

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference Detailed Description The MAX1082/MAX1083 ADCs use a successive- approximation conversion technique and input T/H cir- cuitry to convert an analog signal to a 10-bit digital out- put. A flexible serial interface ...

Page 12

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference The T/H enters its tracking mode on the falling clock edge after the fifth bit of the 8-bit control word has been shifted in. It enters its hold mode on the ...

Page 13

Table 1. Channel Selection in Single-Ended Mode (SGL / SEL2 SEL1 SEL0 Table 2. Channel Selection in Pseudo-Differential Mode (SGL / DIF = 0) SEL2 SEL1 ...

Page 14

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference Table 3. Control-Byte Format BIT 7 BIT 6 BIT 5 (MSB) START SEL2 SEL1 BIT NAME The first logic “1” bit after CS goes low defines the beginning of the control ...

Page 15

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference CS SCLK 1 4 SEL SEL SEL UNI/ DIN BIP START SSTRB RB1 DOUT IDLE A/D STATE Figure 5. Single-Conversion Timing Software Power-Down Software power-down is activated using ...

Page 16

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference CS t CSS t CSO SCLK DIN t DOE DOUT t STE SSTRB Figure 6. Detailed Serial-Interface Timing mode (PD1 = PD0 = 0), with an external ...

Page 17

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference CS DIN S CONTROL BYTE SCLK DOUT SSTRB Figure 7. Continuous 16-Clock/Conversion Timing 1.50 1.25 1.00 0.75 0.50 0.25 0 0.0001 0.001 0.01 0.1 TIME IN SHUTDOWN (s) ...

Page 18

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference unipolar operation, and 1LSB = 2.44mV [(2.500V / 2) / 1024] for bipolar operation. Layout, Grounding, and Bypassing For best performance, use printed circuit (PC) boards; wire-wrap boards are not recommended. ...

Page 19

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference +3.3V 24k 510k 100k 0.047µF Figure 12. MAX1082/MAX1083 Reference-Adjust Circuit OUTPUT CODE FULL-SCALE TRANSITION 111 110 101 00 . ...

Page 20

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference Table 5. Full Scale and Zero Scale UNIPOLAR MODE Full Scale REF COM SUPPLIES +3V GND *R = 10Ω V GND COM V DD DD2 MAX1082 MAX1083 *OPTIONAL ...

Page 21

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference 10µF 0.1µ DD1 2 CH0 MAX1082 3 CH1 ANALOG MAX1083 INPUTS 4 CH2 5 CH3 V DD1 6 COM SHDN 7 REF 8 4.7µF Figure 16. QSPI Connections, External ...

Page 22

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference CS SCLK START SEL2 SEL1 SEL0 DIN SSTRB DOUT Figure 18. MAX1082/MAX1083-to-TMS320 Serial Interface Typical Operating +5V OR +3V CH0 V DD1 0.1µ DD2 +2.5V ANALOG MAX1082 INPUTS ...

Page 23

Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference ________________________________________________________Package Information Note: MAX1082/MAX1083 do not have an exposed die pad. ______________________________________________________________________________________ 23 ...

Page 24

... 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. 24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2000 Maxim Integrated Products NOTES Printed USA is a registered trademark of Maxim Integrated Products ...

Related keywords