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MAX1084BCSA+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
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.
General Description
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.
Applications
Portable Data Logging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Pen Digitizers
Process Control
Features
♦ Single-Supply Operation
+4.5V to +5.5V (MAX1084)
+2.7V to +3.6V (MAX1085)
♦ 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
MAX1242/MAX1243
♦ 8-Pin SO Package
MAX1084/MAX1085
400ksps/300ksps, Single-Supply, Low-Power,
Serial 10-Bit ADCs with Internal Reference
________________________________________________________________ Maxim Integrated Products 1
19-1686; Rev 1; 12/10
PART
MAX1084ACSA+
MAX1084BCSA+
MAX1084AESA+ -40°C to +85°C
0°C to +70°C
0°C to +70°C
TEMP
RANGE
PIN-
PACKAGE
8 SO
8 SO
8 SO
Pin Configuration
Ordering Information
INL
(LSB)
±1/2
±1
±1/2
MAX1084BESA+
MAX1085ACSA+
MAX1085BCSA+ 0°C to +70°C
0°C to +70°C
-40°C to +85°C 8 SO
8 SO
8 SO
±1
±1/2
±1
MAX1085AESA+
MAX1085BESA+ -40°C to +85°C
-40°C to +85°C 8 SO
8 SO
±1/2
±1
7
AIN
T/H
DOUT
6
1
5
OUTPUT
SHIFT
REGISTER
CONTROL
LOGIC
2.5V
REFERENCE
INT
CLOCK
10-BIT
SAR
8
2
3
REF
4
SHDN
SCLK
CS
MAX1084
MAX1085
V
DD
GND
Functional Diagram
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
TOP VIEW
1
2
3
4
8
7
6
5
SCLK
CS
DOUT
GND
REF
SHDN
AIN
V
DD
SO
MAX1084
MAX1085
+
+Denotes a lead(Pb)-free/RoHS-compliant package.
MAX1084/MAX1085
400ksps/300ksps, Single-Supply, Low-Power,
Serial 10-Bit ADCs with Internal Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX1084
(V
DD
= +4.5V to +5.5V, f
SCLK
= 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), 4.7µF capacitor at REF, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to GND .............................................................-0.3V to +6V
AIN to GND................................................-0.3V to (V
DD
+ 0.3V)
REF to GND ...............................................-0.3V to (V
DD
+ 0.3V)
Digital Inputs to GND...............................................-0.3V to +6V
DOUT to GND............................................-0.3V to (V
DD
+ 0.3V)
DOUT Current..................................................................±25mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.88mW/°C above +70°C) ..............471mW
Operating Temperature Ranges
MAX1084_CSA/MAX1085_CSA.........................0°C to +70°C
MAX1084_ESA/MAX1085_ESA ......................-40°C to +85°C
Storage Temperature Range............................-60°C to +150°C
Lead Temperature (soldering, 10s)................................+300°C
Soldering Temperature (reflow)......................................+260°C
MAX1084A
SINAD > 58dB
-3dB point
Up to the 5th harmonic
f
IN1
= 99kHz, f
IN2
=102kHz
MAX1084B
No missing codes over temperature
CONDITIONS
%40 60Duty Cycle
MHz0.5 6.4f
SCLK
Serial Clock Frequency
ps< 50Aperture Jitter
ns10Aperture Delay
ns468t
ACQ
Track/Hold Acquisition Time
µs2.5t
CONV
Conversion Time (Note 4)
kHz350Full-Linear Bandwidth
MHz6Full-Power Bandwidth
dB76IMDIntermodulation Distortion
dB70SFDRSpurious-Free Dynamic Range
LSB
±0.5
INLRelative Accuracy (Note 2)
Bits10Resolution
dB-70THDTotal Harmonic Distortion
dB60SINAD
Signal-to-Noise Plus Distortion
Ratio
ppm/°C ±0.8
Gain-Error Temperature
Coefficient
±1.0
LSB±1.0DNLDifferential Nonlinearity
LSB±4.0Offset Error
LSB±3.0Gain Error (Note 3)
UNITSMIN TYP MAXSYMBOLPARAMETER
pF18Input Capacitance
V0 2.5V
AIN
Input Voltage Range
DC ACCURACY (Note 1)
DYNAMIC SPECIFICATIONS (100kHz sine wave, 2.5V
P-P
, clock = 6.4MHz)
CONVERSION RATE
ANALOG INPUT (AIN)
MAX1084/MAX1085
400ksps/300ksps, Single-Supply, Low-Power,
Serial 10-Bit ADCs with Internal Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—MAX1084 (continued)
(V
DD
= +4.5V to +5.5V, f
SCLK
= 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), 4.7µF capacitor at REF, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER
V
CS
= 5V
V
CS
= 5V
I
SOURCE
= 1mA
I
SINK
= 5mA
V
IN
= 0V or V
DD
0 to 1.0mA output load
T
A
= +25°C
V4.5 5.5V
DD
Positive Supply Voltage (Note 6)
pF15C
OUT
Three-State Output Capacitance
µA±10I
L
Three-State Leakage Current
V4V
OH
Output Voltage High
V0.4V
OL
Output Voltage Low
pF15C
IN
Input Capacitance
µA±1I
IN
Input Leakage
V0.2V
HYST
Input Hysteresis
V0.8V
INL
Input Low Voltage
V3.0V
INH
Input High Voltage
µF4.7 10Capacitive Bypass at REF
mV/mA0.1 2.0Load Regulation (Note 5)
V2.48 2.50 2.52V
REF
REF Output Voltage
mA30REF Short-Circuit Current
ppm/°C±15TC V
REF
REF Output Tempco
V
DD
= 5V ±10%, midscale input
SCLK = V
DD
, SHDN = GND
V
DD
= 5.5V
mV±0.5 ±2.0PSRPower-Supply Rejection
µA210I
SHDN
Shutdown Supply Current
mA2.5 4.0I
DD
Positive Supply Current (Note 7)
ELECTRICAL CHARACTERISTICS—MAX1085
(V
DD
= +2.7V to +3.6V, f
SCLK
= 4.8MHz, 50% duty cycle, 16 clocks/conversion cycle (300ksps), 4.7µF capacitor at REF, T
A
= T
MIN
to
T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
MAX1085A
MAX1085B
No missing codes over temperature
CONDITIONS
LSB
±0.5
INLRelative Accuracy (Note 2)
Bits
10
Resolution
ppm/°C
±1.6
Gain-Error Temperature
Coefficient
LSB
±3.0
Gain Error (Note 3)
±1.0
LSB
±1.0
DNLDifferential Nonlinearity
LSB
±3.0
Offset Error
UNITSMIN TYP MAXSYMBOLPARAMETER
DC ACCURACY (Note 1)
INTERNAL REFERENCE
DIGITAL INPUTS (SCLK, CS, SHDN)
DIGITAL OUTPUT (DOUT)
POWER SUPPLY
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

MAX1084BCSA+T

Mfr. #:
Buy MAX1084BCSA+T
Manufacturer:
Maxim Integrated
Description:
Analog to Digital Converters - ADC 300/400ksps Sgl-Sply 4Ch Serial 10Bit
Lifecycle:
New from this manufacturer.
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