19-2466; Rev 1; 6/09
Low-Power, 14-Bit Analog-to-Digital Converters
with Parallel Interface
General Description
The MAX1065/MAX1066 14-bit, low-power successive
approximation analog-to-digital converters (ADCs) fea-
ture automatic power-down, a factory-trimmed internal
clock, and a high-speed, 14-bit-wide (MAX1065) or
byte-wide (MAX1066) parallel interface. The devices
operate from a single 4.75V to 5.25V analog supply and
a 2.7V to 5.25V digital supply.
The MAX1065/MAX1066 use an internal 4.096V refer-
ence or an external reference. The MAX1065/MAX1066
consume only 1.8mA at a sampling rate of 165ksps with
external reference and 2.7mA with internal reference.
AutoShutdown™ reduces supply current to 0.1mA at
10ksps.
The MAX1065/MAX1066 are ideal for high-performance,
battery-powered, data-acquisition applications.
Excellent dynamic performance and low-power con-
sumption in a small package make the MAX1065/
MAX1066 the best choice for circuits with demanding
power consumption and space requirements.
The 14-bit-wide MAX1065 is available in a 28-pin TSSOP
package, and the byte-wide MAX1066 is available in a
20-pin TSSOP package. Both devices are available in
either the 0°C to +70°C commercial, or the -40°C to
+85°C extended temperature range.
Features
o
14-Bit-Wide (MAX1065) and Byte-Wide (MAX1066)
Parallel Interface
o
High Speed: 165ksps Sample Rate
o
Accurate: ±1LSB DNL (max), ±1LSB INL (max)
o
4.096V, 35ppm/°C Internal Reference
o
External Reference Range 3.8V to 5.25V
o
Single 4.75V to 5.25V Analog Supply Voltage
o
2.7V to 5.25V Digital Supply Voltage
o
Low Supply Current
1.8mA (External Reference)
2.7mA (Internal Reference)
0.1mA AutoShutdown Mode (10ksps, External
Reference)
o
Small Footprint
28-Pin TSSOP Package (14-Bit Wide)
20-Pin TSSOP Package (Byte Wide)
MAX1065/MAX1066
Applications
Temperature
Sensor/Monitor
Industrial Process
Control
I/O Boards
Data-Acquisition
Systems
Cable/Harness Tester
Accelerometer
Measurements
Digital Signal Processing
PART
MAX1065ACUI
MAX1065BCUI
MAX1065CCUI
MAX1065AEUI
MAX1065BEUI
MAX1065CEUI
MAX1066ACUP
MAX1066BCUP
0.1μF
μP
DATA
BUS
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
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
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
INL
±1
±2
±3
±1
±2
±3
±1
±2
±3
±1
±2
±3
Typical Operating Circuit
5V ANALOG
0.1μF
5V DIGITAL
MAX1066CCUP
MAX1066AEUP
MAX1066BEUP
MAX1066CEUP
AV
DD
ANALOG INPUT
AIN
R/C
CS
RESET
AGND
DV
DD
D0–D13
MAX1065
EOC
REF
REFADJ
DGND
0.1μF
1μF
Pin Configurations appear at end of data sheet.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________
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.
Low-Power, 14-Bit Analog-to-Digital Converters
with Parallel Interface
MAX1065/MAX1066
ABSOLUTE MAXIMUM RATINGS
AV
DD
to AGND .........................................................-0.3V to +6V
DV
DD
to DGND.........................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
AIN, REF, REFADJ to AGND....................-0.3V to (AV
DD
+ 0.3V)
CS,
HBEN, R/C, RESET to DGND ............................-0.3V to +6V
Digital Output (D13–D0,
EOC)
to DGND ..................................................-0.3V to (DV
DD
+ 0.3V)
Maximum Continuous Current Into Any Pin ........................50mA
Continuous Power Dissipation (T
A
= +70°C)
20-Pin TSSOP (derate 10.9mW/°C above +70°C) .......879mW
28-Pin TSSOP (derate 12.8mW/°C above +70°C) .....1026mW
Operating Temperature Ranges
MAX106_ _CU_ ...................................................0°C to +70°C
MAX106_ _EU_ ................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+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
(AV
DD
= DV
DD
= 5V, external reference = 4.096V, C
REF
= 1µF, C
REFADJ
= 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.)
PARAMETER
DC ACCURACY
Resolution
Relative Accuracy (Note 1)
Differential Nonlinearity
Transition Noise
Offset Error
Gain Error
Offset Drift
Gain Drift
DYNAMIC PERFORMANCE (f
IN(SINE-WAVE)
= 1kHz, V
IN
= 4.096V
P-P
, 165ksps)
Signal-to-Noise Plus Distortion
Signal-to-Noise Ratio
Total Harmonic Distortion
Spurious-Free Dynamic Range
Full-Power Bandwidth
Full-Linear Bandwidth
CONVERSION RATE
Sample Rate
Aperture Delay
Aperture Jitter
ANALOG INPUT
Input Range
Input Capacitance
V
AIN
C
AIN
0
40
V
REF
V
pF
f
SAMPLE
40
100
165
ksps
ns
ps
SINAD
SNR
THD
SFDR
-3dB point
SINAD > 81dB
87
81
82
84
84
-99
102
4
20
-86
dB
dB
dB
dB
MHz
kHz
(Note 2)
N
MAX106_A
INL
DNL
MAX106_B
MAX106_C
No missing codes over temperature
RMS noise, includes quantization
noise
0.32
0.2
±0.002
0.6
0.2
1
±0.02
14
±1
±2
±3
±1
LSB
LSB
RMS
mV
%FSR
ppm/°C
ppm/°C
LSB
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
Low-Power, 14-Bit Analog-to-Digital Converters
with Parallel Interface
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= 5V, external reference = 4.096V, C
REF
= 1µF, C
REFADJ
= 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.)
PARAMETER
INTERNAL REFERENCE
REF Output Voltage
REF Output Tempco
REF Short-Circuit Current
Capacitive Bypass at REFADJ
Capacitive Bypass at REF
REFADJ Input Leakage Current
EXTERNAL REFERENCE
REFADJ Buffer Disable
Threshold
REF Input Voltage Range
REF Input Current
I
REF
To power-down the internal reference
Internal reference disabled (Note 3)
V
REF
= 4.096V, f
SAMPLE
= 165ksps
Shutdown mode
0.7 x
DV
DD
0.3 x
DV
DD
V
IH
= 0 or DV
DD
±0.1
0.1
15
I
SOURCE
= 0.5mA, DV
DD
= 2.7V to
5.25V, AV
DD
= 5.25V
I
SINK
= 1.6mA, DV
DD
= 2.7V to 5.25V,
AV
DD
= 5.25V
D0–D13
±0.1
15
D
VDD
-
0.4
0.4
±10
±1
AV
DD
-
0.4
3.8
14
±0.1
AV
DD
-
0.1
AV
DD
-
0.2
25
V
V
µA
V
REF
TC
REF
I
REFSC
C
REFADJ
C
REF
I
REFADJ
0.1
1
20
4.056
4.096
±35
±10
4.136
V
ppm/°C
mA
µF
µF
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX1065/MAX1066
DIGITAL INPUTS/OUTPUTS (CS, R/C,
EOC,
D0–D13, RESET, HBEN)
Input High Voltage
Input Low Voltage
Input Leakage Current
Input Hysteresis
Input Capacitance
Output High Voltage
Output Low Voltage
Three-State Leakage Current
Three-State Output
Capacitance
POWER REQUIREMENTS
Analog Supply Voltage
Digital Supply Voltage
AV
DD
DV
DD
165ksps
Internal reference
Analog Supply Current
I
AVDD
External reference
100ksps
10ksps
1ksps
165ksps
100ksps
10ksps
1ksps
4.75
2.7
3.2
2.6
1.9
1.8
2.4
1.8
0.8
0.2
2.8
mA
5.25
AV
DD
3.6
V
V
V
IH
V
IL
I
IN
V
HYST
C
IN
V
OH
V
OL
I
OZ
C
OZ
V
µA
V
pF
V
V
µA
pF
_______________________________________________________________________________________
3
Low-Power, 14-Bit Analog-to-Digital Converters
with Parallel Interface
MAX1065/MAX1066
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= 5V, external reference = 4.096V, C
REF
= 1µF, C
REFADJ
= 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
165ksps
Digital Supply Current
I
DVDD
D0–D13 = all zeros
100ksps
10ksps
1ksps
Full power-down
Shutdown Supply Current
(Note 4)
I
SHDN
REF and REF
buffer enabled
(standby mode)
I
AVDD
I
DVDD
I
AVDD
I
DVDD
MIN
TYP
0.5
0.3
0.03
0.003
0.05
0.5
1.0
0.5
68
5
6
1.2
5
mA
µA
mA
µA
dB
MAX
0.7
mA
UNITS
Power-Supply Rejection Ratio
(Note 5)
PSRR
AV
DD
= 5V, ±5%, full-scale input
TIMING CHARACTERISTICS (Figures 1 and 2)
(AV
DD
= 4.75V to 5.25V, DV
DD
= 2.7V to AV
DD
, external reference = 4.096V, C
REF
= 1µF, C
REFADJ
= 0.1µF, C
D13–D0,
C
EOC
= 20pF,
T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Acquisition Time
Conversion Time
CS
Pulse Width High
CS
Pulse Width Low
R/C to
CS
Fall Setup Time
R/C to
CS
Fall Hold Time
CS
to Output Data Valid
HBEN Transition To
Output Data Valid
(MAX1066 only)
EOC
Fall To
CS
Fall
CS
Rise To
EOC
Rise
Bus Relinquish Time
(Note 6)
SYMBOL
t
ACQ
t
CONV
t
CSH
t
CSL
t
DS
t
DH
t
DO
V
DVDD
= 4.75V to 5.25V
V
DVDD
= 2.7V to 5.25V
V
DVDD
= 4.75V to 5.25V
V
DVDD
= 2.7V to 4.74V
V
DVDD
= 4.75V to 5.25V
t
DO1
V
DVDD
= 2.7V to 4.74V
t
DV
t
EOC
t
BR
V
DVDD
= 4.75V to 5.25V
V
DVDD
= 2.7V to 4.74V
V
DVDD
= 4.75V to 5.25V
V
DVDD
= 2.7V to 4.74V
0
40
80
40
80
80
ns
ns
ns
(Note 6)
(Note 6)
V
DVDD
= 4.75V to 5.25V
V
DVDD
= 2.7V to 4.74V
40
40
60
0
40
60
40
80
40
ns
CONDITIONS
MIN
1.1
4.7
TYP
MAX
UNITS
µs
ns
ns
ns
ns
ns
Note 1:
Relative accuracy is the deviation of the analog value at any code from its theoretical value after offset and gain errors have
been removed.
Note 2:
Offset nulled.
Note 3:
Guaranteed by design, not production tested.
Note 4:
Maximum specification is limited by automated test equipment.
Note 5:
Defined as the change in positive full scale caused by a ±5% variation in the nominal supply.
Note 6:
To ensure best performance, finish reading the data and wait t
BR
before starting a new acquisition.
4
_______________________________________________________________________________________
Low-Power, 14-Bit Analog-to-Digital Converters
with Parallel Interface
Typical Operating Characteristics
(AV
DD
= DV
DD
= 5V, external reference = 4.096V, C
REF
= 1µF, C
REFADJ
= 0.1µF, T
A
= +25°C, unless otherwise noted.)
I
AVDD
+ I
DVDD
SUPPLY CURRENT
vs. SAMPLE RATE
MAX1065/MAX1066 toc02
MAX1065/MAX1066 toc03
MAX1065/MAX1066
DNL vs. OUTPUT CODE
0.8
0.6
0.4
DNL (LSB)
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
4096
8192
OUTPUT CODE
12288
16384
MAX1065/MAX1066 toc01
INL vs. OUTPUT CODE
2.0
1.5
1.0
INL (LSB)
0.5
0
-0.5
-1.0
-1.5
-2.0
0
4096
8192
OUTPUT CODE
12288
16384
0.0001
0.01
10
1.0
1
SUPPLY CURRENT (mA)
0.1
0.01
0.001
0.1
1
10
100
1000
CONVERSION RATE (ksps)
I
AVDD
+ I
DVDD
SUPPLY CURRENT
vs. TEMPERATURE
MAX1065/MAX1066 toc04
I
AVDD
+ I
DVDD
SHUTDOWN CURRENT
vs. TEMPERATURE
4.5
SHUTDOWN CURRENT (μA)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
MAX1065/MAX1066 toc05
INTERNAL REFERENCE
vs. TEMPERATURE
4.126
INTERNAL REFERENCE (V)
4.116
4.106
4.096
4.086
4.076
4.066
4.056
MAX1065/MAX1066 toc06
3.5
3.0
SUPPLY CURRENT (mA)
2.5
2.0
1.5
1.0
0.5
SAMPLE RATE = 165ksps
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
5.0
4.136
0.5
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
OFFSET ERROR vs. TEMPERATURE
MAX1065/MAX1066 toc07
GAIN ERROR vs. TEMPERATURE
MAX1065/MAX1066 toc08
SINAD vs. FREQUENCY
90
80
70
SINAD (dB)
60
50
40
30
20
10
0
SAMPLE RATE = 165ksps
0.1
1
10
100
MAX1065/MAX1066 toc09
1000
800
600
OFFSET ERROR (μV)
400
200
0
-200
-400
-600
-800
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
0.020
0.015
GAIN ERROR (%FSR)
0.010
0.005
0
-0.005
-0.010
-0.015
-0.020
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
100
FREQUENCY (kHz)
_______________________________________________________________________________________
5
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