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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1068 Datasheet

(MAX1067 / MAX1068) 200ksps Analog-to-Digital Converters

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MAX1068 pdf
19-2955; Rev 1; 8/07
Multichannel, 14-Bit, 200ksps Analog-to-Digital
Converters
General Description
The MAX1067/MAX1068 low-power, multichannel, 14-
bit analog-to-digital converters (ADCs) feature a suc-
cessive-approximation ADC, integrated +4.096V
reference, a reference buffer, an internal oscillator,
automatic power-down, and a high-speed SPI™/
QSPI™/MICROWIRE™-compatible interface. The
MAX1067/MAX1068 operate with a single +5V analog
supply and feature a separate digital supply, allowing
direct interfacing with +2.7V to +5.5V digital logic.
The MAX1067/MAX1068 consume only 3.6mA (AVDD =
DVDD = +5V) at 200ksps when using an external refer-
ence. AutoShutdown™ reduces the supply current to
185µA at 10ksps and to less than 10µA at reduced sam-
pling rates.
The MAX1067 includes a 4-channel input multiplexer, and
the MAX1068 accepts up to eight analog inputs.
In addition, digital signal processor (DSP)-initiated con-
versions are simplified with the DSP frame-sync input and
output featured in the MAX1068. The MAX1068 includes a
data-bit transfer input to select between 8-bit-wide or 16-
bit-wide data-transfer modes. Both devices feature a scan
mode that converts each channel sequentially or one
channel continuously.
Excellent dynamic performance and low power, com-
bined with ease of use and an integrated reference,
make the MAX1067/MAX1068 ideal for control and data-
acquisition operations or for other applications with
demanding power consumption and space require-
ments. The MAX1067 is available in a 16-pin QSOP
package, and the MAX1068 is available in a 24-pin
www.DQatSaOShPeept4aUc.kcoamge. Both devices are guaranteed over the
commercial (0°C to +70°C) and extended (-40°C to
+85°C) temperature ranges. Use the MAX1168 evalua-
tion kit to evaluate the MAX1068.
Applications
Motor Control
Industrial Process Control
Industrial I/O Modules
Data-Acquisition Systems
Thermocouple Measurements
Accelerometer Measurements
Features
14-Bit Resolution, ±0.5 LSB INL and
±1 LSB DNL (max)
+5V Single-Supply Operation
Adjustable Logic Level (+2.7V to +5.25V)
Input Voltage Range: 0 to VREF
Internal (+4.096V) or External (+3.8V to AVDD)
Reference
Internal Track/Hold, 4MHz Input Bandwidth
Internal or External Clock
SPI/QSPI/MICROWIRE-Compatible Serial
Interface, MAX1068 Performs DSP-Initiated
Conversions
8-Bit-Wide or 16-Bit-Wide Data-Transfer Mode
(MAX1068 Only)
4-Channel (MAX1067) or 8-Channel (MAX1068)
Input Mux
Scan Mode Sequentially Converts Multiple
Channels or One Channel Continuously
Low Power
3.6mA at 200ksps
1.85mA at 100ksps
185µA at 10ksps
0.6µA in Full Power-Down Mode
Small Package Size
16-Pin QSOP (MAX1067)
24-Pin QSOP (MAX1068)
PART
MAX1067ACEE
MAX1067BCEE
MAX1067CCEE
MAX1067AEEE
MAX1067BEEE
MAX1067CEEE
Ordering Information
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
16 QSOP
16 QSOP
16 QSOP
16 QSOP
16 QSOP
16 QSOP
INL
(LSB)
±0.5
±1
±2
±0.5
±1
±2
Ordering Information continued at end of data sheet.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Pin Configurations appear at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1068 Datasheet

(MAX1067 / MAX1068) 200ksps Analog-to-Digital Converters

No Preview Available !

MAX1068 pdf
Multichannel, 14-Bit, 200ksps Analog-to-Digital
Converters
ABSOLUTE MAXIMUM RATINGS
AVDD to AGND .........................................................-0.3V to +6V
DVDD to DGND.........................................................-0.3V to +6V
DGND to AGND.....................................................-0.3V to +0.3V
AIN_, REF, REFCAP to AGND..................-0.3V to (AVDD + 0.3V)
SCLK, CS, DSEL, DSPR, DIN to DGND ...................-0.3V to +6V
DOUT, DSPX, EOC to DGND...................-0.3V to (DVDD + 0.3V)
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (TA = +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW
24-Pin QSOP (derate 9.5mW/°C above +70°C)...........762mW
Operating Temperature Ranges
MAX106_ _ CE_ ..................................................0°C to +70°C
MAX106_ _ EE_ ...............................................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°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.
ELECTRICAL CHARACTERISTICS
(AVDD = DVDD = +4.75V to +5.25V, fSCLK = 4.8MHz external clock (50% duty cycle), 24 clocks/conversion (200ksps), external VREF
= +4.096V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
DC ACCURACY (Note 1)
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Resolution
Relative Accuracy (Note 2)
MAX106_A
INL MAX106_B
MAX106_C
MAX106_A
14
±0.5
±1
±1.0
±2
±1.5
±3
±1
Bits
LSB
Differential Nonlinearity
DNL
No missing codes
over temperature
MAX106_B
MAX106_C
+1.5
-1.0
+1.5
-1.0
LSB
www.DaTtaraSnhseiteiot4nUN.cooisme
RMS noise
External reference
Internal reference
0.33
0.35
LSBRMS
Offset Error
Gain Error
Offset Drift
Gain Drift
(Note 3)
(Note 3)
±0.1
±0.01
1
±1.2
±10
±0.2
mV
%FSR
ppm/°C
ppm/°C
DYNAMIC SPECIFICATIONS (1kHz sine wave, 4.096VP-P) (Note 1)
Signal-to-Noise Plus Distortion
SINAD
81 84
dB
Signal-to-Noise Ratio
Total Harmonic Distortion
Spurious-Free Dynamic Range
Full-Power Bandwidth
Full-Linear Bandwidth
SNR
THD
SFDR
-3dB point
SINAD > 81dB
82 84
dB
-98 -86
dB
86 99
dB
4 MHz
10 kHz
Channel-to-Channel Isolation
CONVERSION RATE
(Note 4)
85 dB
Conversion Time
tCONV
Internal clock, no data transfer,
single conversion (Note 5)
External clock
5.52 7.07
3.75
µs
2 _______________________________________________________________________________________


Part Number MAX1068
Description (MAX1067 / MAX1068) 200ksps Analog-to-Digital Converters
Maker Maxim Integrated Products
Total Page 30 Pages
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