19-2203; Rev 1; 5/09
14-Bit, +5V, 200ksps ADC with 10µA Shutdown
General Description
The MAX1062 low-power, 14-bit analog-to-digital con-
verter (ADC) features a successive approximation ADC,
automatic power-down, fast 1.1µs wake-up, and a high-
speed SPI™/QSPI™/MICROWIRE™-compatible inter-
face. The MAX1062 operates with a single +5V analog
supply and features a separate digital supply, allowing
direct interfacing with 2.7V to 5.25V digital logic.
At the maximum sampling rate of 200ksps, the
MAX1062 consumes typically 2.75mA. Power con-
sumption is typically 13.75mW (AV
DD
= DV
DD
= 5V) at
a 200ksps (max) sampling rate. AutoShutdown™
reduces supply current to 140µA at 10ksps and to less
than 10µA at reduced sampling rates.
Excellent dynamic performance and low power, com-
bined with ease of use and small package size (10-pin
µMAX
®
) make the MAX1062 ideal for battery-powered
and data-acquisition applications or for other circuits
with demanding power consumption and space
requirements.
♦
14-Bit Resolution, 1LSB DNL
♦
+5V Single-Supply Operation
♦
Adjustable Logic Level (2.7V to 5.25V)
♦
Input Voltage Range: 0 to V
REF
♦
Internal Track/Hold, 4MHz Input Bandwidth
♦
SPI/QSPI/MICROWIRE-Compatible Serial Interface
♦
Small 10-Pin
µMAX
Package
♦
Low Power
2.75mA at 200ksps
140µA at 10ksps
0.1µA in Power-Down Mode
Features
MAX1062
Applications
Motor Control
Industrial Process Control
Industrial I/O Modules
Data-Acquisition Systems
Thermocouple Measurements
Accelerometer Measurements
Portable- and Battery-Powered Equipment
PART
MAX1062ACUB
MAX1062BCUB
MAX1062CCUB
MAX1062AEUB
MAX1062BEUB
MAX1062CEUB
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
10 µMAX
10 µMAX
10 µMAX
10 µMAX
10 µMAX
10 µMAX
INL
(LSB)
±1
±2
±3
±1
±2
±3
Pin Configuration
Functional Diagram appears at end of data sheet.
TOP VIEW
REF 1
AV
DD
AGND
2
3
4
5
10 AIN
9
AGND
DV
DD
DGND
DOUT
MAX1062
8
7
6
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
CS
SCLK
µMAX
________________________________________________________________
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
14-Bit, +5V, 200ksps ADC with 10µA Shutdown
MAX1062
ABSOLUTE MAXIMUM RATINGS
AV
DD
to AGND ........................................................-0.3V to +6V
DV
DD
to DGND........................................................-0.3V to +6V
DGND to AGND....................................................-0.3V to +0.3V
AIN, REF to AGND ...................................-0.3V to (AV
DD
+ 0.3V)
SCLK,
CS
to DGND ..................................................-0.3V to +6V
DOUT to DGND .......................................-0.3V to (DV
DD
+ 0.3V)
Maximum Current Into Any Pin ...........................................50mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ..........444mW
Operating Temperature Ranges
MAX1062_CUB .................................................0°C to +70°C
MAX1062_EUB ..............................................-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
(AV
DD
= DV
DD
= +4.75V to +5.25V, f
SCLK
= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V
REF
= +4.096V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
DC ACCURACY (NOTE 1)
Resolution
MAX1062A
Relative Accuracy (Note 2)
Differential Nonlinearity
Transition Noise
Offset Error
Gain Error (Note 3)
Offset Drift
Gain Drift (Note 3)
DYNAMIC SPECIFICATIONS
(1kHz sine wave, 4.096Vp-p) (Note 1)
Signal-to-Noise Plus Distortion
Signal-to-Noise Ratio
Total Harmonic Distortion
Spurious-Free Dynamic Range
Full-Power Bandwidth
Full-Linear Bandwidth
CONVERSION RATE
Conversion Time (Note 4)
Serial Clock Frequency
Aperture Delay
Aperture Jitter
Sample Rate
Track/Hold Acquisition Time
f
S
t
ACQ
f
SCLK
/ 24
1.1
t
CONV
f
SCLK
5
0.1
15
<50
200
240
4.8
µs
MHz
ns
ps
ksps
µs
SINAD
SNR
THD
SFDR
-3dB point
SINAD > 81dB
87
81
82
84
84
-99
101
4
20
-86
dB
dB
dB
dB
MHz
kHz
INL
DNL
MAX1062B
MAX1062C
No missing codes over temperature
RMS noise
±0.5
±0.32
0.2
±0.002
0.4
0.2
1
±0.01
14
±1
±2
±3
±1
LSB
LSB
RMS
mV
%FSR
ppm/
o
C
ppm/
o
C
LSB
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
14-Bit, +5V, 200ksps ADC with 10µA Shutdown
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +4.75V to +5.25V, f
SCLK
= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V
REF
= +4.096V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
ANALOG INPUT (AIN)
Input Range
Input Capacitance
EXTERNAL REFERENCE
Input Voltage Range
Input Current
DIGITAL INPUTS (SCLK,
CS)
Input High Voltage
Input Low Voltage
Input Leakage Current
Input Hysteresis
Input Capacitance
DIGITAL OUTPUT (DOUT)
Output High Voltage
Output Low Voltage
Three-State Output Leakage
Current
Three-State Output Capacitance
POWER SUPPLIES
Analog Supply
Digital Supply
AV
DD
DV
DD
200ksps
Analog Supply Current
I
AVDD
CS
= DGND
100ksps
10ksps
1ksps
200ksps
Digital Supply Current
I
DVDD
CS
= DGND,
DOUT = all
zeros
100ksps
10ksps
1ksps
4.75
2.7
2.75
1.4
0.14
0.014
0.6
0.3
0.03
0.003
1.0
mA
5.25
5.25
3.25
mA
V
V
V
OH
V
OL
I
L
C
OUT
I
SOURCE
= 0.5mA, DV
DD
= +2.7V to +5.25V
I
SINK
= 10mA, DV
DD
= +4.75V to +5.25V
I
SINK
= 1.6mA, DV
DD
= +2.7V to +5.25V
CS
= DV
DD
CS
= DV
DD
±0.1
15
DV
DD
-
0.25V
0.7
0.4
±10
V
V
µA
pF
V
IH
V
IL
I
IN
V
HYST
C
IN
DV
DD
= +2.7V to +5.25V
DV
DD
= +2.7V to +5.25V
V
IN
= 0 to DV
DD
±0.1
0.2
15
0.7 x
DV
DD
0.3 x
DV
DD
±1
V
V
µA
V
pF
V
REF
V
REF
= 4.096V, f
SCLK
= 4.8MHz
I
REF
V
REF
= 4.096V, SCLK idle
CS
= DV
DD
, SCLK idle
3.8
100
0.01
0.01
µA
AV
DD
V
V
AIN
C
AIN
0
40
V
REF
V
pF
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX1062
_______________________________________________________________________________________
3
14-Bit, +5V, 200ksps ADC with 10µA Shutdown
MAX1062
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +4.75V to +5.25V, f
SCLK
= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V
REF
= +4.096V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Shutdown Supply Current
Power-Supply Rejection Ratio
(Note 5)
SYMBOL
I
AVDD
+
I
DVDD
PSRR
CONDITIONS
CS
= DV
DD
, SCLK = idle
AV
DD
= DV
DD
= +4.75V to +5.25V, full-scale
input
MIN
TYP
0.1
68
MAX
10
UNITS
µA
dB
MAX1062 TIMING CHARACTERISTICS (Figures 1, 2, 3, and 6)
(AV
DD
= DV
DD
= +4.75V to +5.25V, f
SCLK
= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V
REF
= +4.096V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Acquisition Time
SCLK to DOUT Valid
CS
Fall to DOUT Enable
CS
Rise to DOUT Disable
CS
Pulse Width
CS
Fall to SCLK Rise Setup
CS
Rise to SCLK Rise Hold
SCLK High Pulse Width
SCLK Low Pulse Width
SCLK Period
SYMBOL
t
ACQ
t
DO
t
DV
t
TR
t
CSW
t
CSS
t
CSH
t
CH
t
CL
t
CP
65
65
208
C
DOUT
= 50pF
C
DOUT
= 50pF
C
DOUT
= 50pF
50
100
0
CONDITIONS
MIN
1.1
50
80
80
TYP
MAX
UNITS
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
(AV
DD
= +4.75V to +5.25V, DV
DD
= +2.7V to +5.25V, f
SCLK
= 4.8MHz (50% duty cycle), 24 clocks/conversion (200ksps), V
REF
=
+4.096V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Acquisition Time
SCLK to DOUT Valid
CS
Fall to DOUT Enable
CS
Rise to DOUT Disable
CS
Pulse Width
CS
Fall to SCLK Rise Setup
CS
Rise to SCLK Rise Hold
SCLK High Pulse Width
SCLK Low Pulse Width
SCLK Period
SYMBOL
t
ACQ
t
DO
t
DV
t
TR
t
CSW
t
CSS
t
CSH
t
CH
t
CL
t
CP
65
65
208
C
DOUT
= 50pF
C
DOUT
= 50pF
C
DOUT
= 50pF
50
100
0
CONDITIONS
MIN
1.1
100
100
80
TYP
MAX
UNITS
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note 1:
AV
DD
= DV
DD
= +5V.
Note 2:
Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has
been calibrated.
Note 3:
Offset and reference errors nulled.
Note 4:
Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.
Note 5:
Defined as the change in positive full scale caused by a ±5% variation in the nominal supply voltage.
4
_______________________________________________________________________________________
14-Bit, +5V, 200ksps ADC with 10µA Shutdown
Typical Operating Characteristics
(AV
DD
= DV
DD
= +5V, f
SCLK
= 4.8MHz, C
LOAD
= 50pF, V
REF
= +4.096V, T
A
= 25°C, unless otherwise noted.)
INL vs. OUTPUT CODE
MAX1062 toc01
MAX1062
DNL vs. OUTPUT CODE
MAX1062 toc02
MAX1062 FFT
MAX1062 toc03
1.0
0.8
0.6
0.4
1.0
0.8
0.6
0.4
DNL (LSB)
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
-20
MAGNITUDE (dB)
-40
-60
-80
-100
-120
INL (LSB)
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
3276
6553
9830
13107
16384
OUTPUT CODE
0
3276
6553
9830
13107
16384
-140
0
10 20 30 40 50 60 70 80 90 100
FREQUENCY (kHz)
OUTPUT CODE
SINAD
VS.
FREQUENCY
MAX1062 toc04
SFDR
VS.
FREQUENCY
MAX1062 toc05
THD
VS.
FREQUENCY
-10
-20
-30
THD (dB)
-40
-50
-60
-70
-80
-90
-100
-110
f
SAMPLE
= 200kHz
MAX1062 toc06
100
90
80
70
SINAD (dB)
110
100
90
80
SFDR (dB)
70
60
50
40
30
20
0
60
50
40
30
20
10
0
0.1
1
10
100
FREQUENCY (kHz)
f
SAMPLE
= 200kHz
10
0
0.1
f
SAMPLE
= 200kHz
1
10
100
0.1
1
10
100
FREQUENCY (kHz)
FREQUENCY (kHz)
SUPPLY CURRENT
VS.
CONVERSION RATE
MAX1062 toc07
SUPPLY CURRENT
VS.
SUPPLY VOLTAGE
MAX1062 toc08
SUPPLY CURRENT
VS.
TEMPERATURE
MAX1062 toc09
10
3.5
3.0
SUPPLY CURRENT (mA)
2.5
2.0
1.5
1.0
0.5
0
3.5
3.0
SUPPLY CURRENT (mA)
2.5
2.0
1.5
1.0
0.5
AV
DD
= DV
DD
= +5V
0
1
SUPPLY CURRENT (mA)
0.1
0.01
0.001
0.0001
0.01
0.1
1
10
100
1000
4.75
4.85
4.95
5.05
5.15
5.25
-40
-15
10
35
60
85
CONVERSION RATE (kHz)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
_______________________________________________________________________________________
5
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