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MAX1082ACUE+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P23
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
MAX1082/MAX1083
300ksps/400ksps, Single-Supply, 4-Channel,
Serial 10-Bit ADCs with Internal Reference
General Description
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
DD
range may also be
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.
Applications
Portable Data Logging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Pen Digitizers
Process Control
Features
o 4-Channel Single-Ended or 2-Channel
Pseudo-Differential Inputs
o Internal Multiplexer and Track/Hold
o Single-Supply Operation
+4.5V to +5.5V (MAX1082)
+2.7V to +3.6V (MAX1083)
o Internal +2.5V Reference
o 400kHz Sampling Rate (MAX1082)
o Low Power: 2.5mA (400ksps)
1.3mA (REDP)
0.9mA (FASTPD)
2µA (FULLPD)
o SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire
Serial Interface
o Software-Configurable Unipolar or Bipolar Inputs
o 16-Pin TSSOP Package
16
15
14
13
12
11
10
9
2
1
3
4
5
6
7
8
V
DD1
V
DD2
SCLK
CS
DIN
SSTRB
DOUT
GND
REFADJ
TOP VIEW
MAX1082
MAX1083
TSSOP
CH0
CH1
COM
CH2
CH3
SHDN
REF
+
19-1690 Rev 1; 9/12
Typical Operating Circuit appears at end of data sheet.
Pin Configuration
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National Semiconductor Corp.
Ordering Information continued at end of data sheet.
Ordering Information
PART TEMP RANGE
PIN-
PACKAGE
INL
(LSB)
MAX1082ACUE+ 0°C to +70°C 16 TSSOP ±1/2
MAX1082BCUE+ 0°C to +70°C 16 TSSOP ±1
MAX1082AEUE+ -40°C to +85°C 16 TSSOP ±1/2
MAX1082BEUE+ -40°C to +85°C 16 TSSOP ±1
+
Denotes a lead(Pb)-free/RoHS-compliant package.
MAX1082/MAX1083
300ksps/400ksps, Single-Supply, 4-Channel,
Serial 10-Bit ADCs with Internal Reference
2
Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX1082
(V
DD1
= V
DD2
= +4.5V to +5.5V, COM = GND, f
OSC
= 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), external +2.5V
at REF, REFADJ = V
DD1,
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
V
DD_
to V
DD2
....................................................... -0.3V to +0.3V
CH0–CH3, COM to GND ............................ -0.3V to (V
DD
- 0.3V)
REF, REFADJ to GND .................................. -0.3V to V
DD
- 0.3V)
Digital Inputs to GND .............................................. -0.3V to +6V
Digital Outputs to GND.............................. -0.3V to (V
DD
+ 0.3V)
Digital Output Sink Current .................................................25mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TSSOP (derate 6.7mW/°C above +70°C) ........ 533mW
Operating Temperature Ranges
MAX1082_C_E/MAX1083_CUE ......................... 0°C to +70°C
MAX1082_E_E/MAX1083_EUE....................... -40°C to +85°C
Storage Temperature Range ............................ -60°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
MAX1082A
SINAD > 58dB
-3dB point
200kHz, V
IN
= 2.5Vp-p
f
IN1
= 99kHz, f
IN2
=102kHz
MAX1083B
No missing codes over temperature
Up to the 5th harmonic
CONDITIONS
MHz
0.5 6.4
f
SCLK
Serial Clock Frequency
ps
<50
Aperture Jitter
ns
10
Aperture Delay
ns
400
t
ACQ
Track/Hold Acquisition Time
µs
2.5
t
CONV
Conversion Time (Note 5)
kHz
350
Full-Linear Bandwidth
MHz
6
Full-Power Bandwidth
dB
-78
Channel-to-Channel Crosstalk
(Note 4)
dB
76
IMDIntermodulation Distortion
dB
70
SFDRSpurious-Free Dynamic Range
dB
-70
THDTotal Harmonic Distortion
LSB
±0.5
INLRelative Accuracy (Note 2)
bits
10
Resolution
dB
60
SINAD
Signal-to-Noise plus Distortion
Ratio
LSB
±0.2
Channel-to-Channel Offset-Error
Matching
ppm/°C
±1.6
Gain-Error Temperature
Coefficient
±1.0
LSB
±1.0
DNLDifferential Nonlinearity
LSB
±3.0
Offset Error
LSB
±3.0
Gain Error (Note 3)
UNITSMIN TYP MAXSYMBOLPARAMETER
%
40 60
Duty Cycle
DYNAMIC SPECIFICATIONS (100kHz sine-wave input, 2.5Vp-p, 400ksps, 6.4MHz clock, bipolar input mode)
DC ACCURACY (Note 1)
CONVERSION RATE
MAX1082/MAX1083
300ksps/400ksps, Single-Supply, 4-Channel,
Serial 10-Bit ADCs with Internal Reference
3
Maxim Integrated
mA
ELECTRICAL CHARACTERISTICS—MAX1082 (continued)
(V
DD1
= V
DD2
= +4.5V to +5.5V, COM = GND, f
OSC
= 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), external +2.5V
at REF, REFADJ = V
DD1
, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER
To power down the internal reference
For small adjustments, from 1.22V
0 to 1mA output load
On/off leakage current, V
COM
V
CH_
= 0 or V
DD1
T
A
= +25°C
Bipolar, V
COM
or V
CH_
= V
REF
/2, referenced
to COM or CH_
Unipolar, V
COM
= 0V
V/V
+2.05
Buffer Voltage Gain
V
1.4 V
DD1
- 1.0
REFADJ Buffer Disable
Threshold
mV
±100
REFADJ Input Range
V
1.22
REFADJ Output Voltage
µF
0.01 10
Capacitive Bypass at REFADJ
µF
4.7 10
Capacitive Bypass at REF
mV/mA
0.05 2.0
Load Regulation (Note 7)
ppm/°C
±15
TC V
REF
REF Output Temperature
Coefficient
mA
15
REF Short-Circuit Current
V
2.480 2.500 2.520
V
REF
REF Output Voltage
pF18Input Capacitance
µA
±0.001 ±1
Multiplexer Leakage Current
±V
REF
/2
V
V
REF
V
CH_
Input Voltage Range, Single
Ended and Differential (Note 6)
V
IN
= 0V or V
DD2
In full power-down mode, f
SCLK
= 0
V
REF
= 2.500V, f
SCLK
= 0
V
REF
= 2.500V, f
SCLK
= f
MAX
(Note 8)
pFC
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
5
320
µA
200 350
REF Input Current
V
1.0 V
DD1
+
50mV
REF Input Voltage Range
I
SINK
= 5mA V0.4V
OL
Output Voltage Low
15
I
SOURCE
= 1mA V4V
OH
Output Voltage High
CS = V
DD2
µA±10I
L
Three-State Leakage Current
CS = V
DD2
pF15C
OUT
Three-State Output Capacitance
ANALOG INPUTS (CH3–CH0, COM)
EXTERNAL REFERENCE (reference buffer disabled, reference applied to REF)
INTERNAL REFERENCE
DIGITAL INPUTS (DIN, SCLK, CS, SHDN)
DIGITAL OUTPUTS (DOUT, SSTRB)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P23

MAX1082ACUE+T

Mfr. #:
Buy MAX1082ACUE+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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