19-2525; Rev 0; 7/02
16-Bit, +5V, 200ksps ADC with 10µA Shutdown
General Description
The MAX1162 low-power, 16-bit analog-to-digital con-
verter (ADC) features a successive-approximation ADC,
automatic power-down, fast 1.1µs wakeup, and a high-
speed SPI™/QSPI™/MICROWIRE™-compatible inter-
face. The MAX1162 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
MAX1162 consumes only 2.5mA. Power consumption is
only 12.5mW (AV
DD
= DV
DD
= +5V) at a 200ksps (max)
sampling rate. AutoShutdown™ reduces supply current
to 130µA 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 and 10-pin DFN) make the MAX1162 ideal for
battery-powered and data-acquisition applications or
for other circuits with demanding power consumption
and space requirements.
o
+5V Single-Supply Operation
o
Adjustable Logic Level (+2.7V to +5.25V)
o
Input Voltage Range: 0 to V
REF
o
Internal Track/Hold, 4MHz Input Bandwidth
o
SPI/QSPI/MICROWIRE-Compatible Serial Interface
o
Small 10-Pin µMAX or 10-Pin DFN Package
o
Low Power
2.5mA at 200ksps
130µA at 10ksps
0.1µA in Power-Down Mode
Features
o
16-Bit Resolution, No Missing Codes
MAX1162
Ordering Information
PART
MAX1162ACUB
TEMP
RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°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
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
10 µMAX
10 DFN
10 µMAX
10 DFN
10 µMAX
10 DFN
10 µMAX
10 DFN
10 µMAX
10 DFN
10 µMAX
10 DFN
INL
(LSB)
±2
±2
±2
±2
±4
±4
±2
±2
±2
±2
±4
±4
Applications
Motor Control
Industrial Process Control
Industrial I/O Modules
Data-Acquisition Systems
Thermocouple Measurements
Accelerometer Measurements
Portable- and Battery-Powered Equipment
MAX1162AC_B*
MAX1162BCUB
MAX1162BC_B*
MAX1162CCUB
MAX1162CC_B*
MAX1162AEUB
MAX1162AE_B*
MAX1162BEUB
MAX1162BE_B*
MAX1162CEUB
MAX1162CE_B*
*Future
product—contact factory for DFN package availability.
Pin Configuration
Functional Diagram appears at end of data sheet.
TOP VIEW
REF 1
AV
DD
AGND
CS
2
3
4
5
10 AIN
9
AGND
DV
DD
DGND
DOUT
MAX1162
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.
SCLK
µMAX/DFN
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
16-Bit, +5V, 200ksps ADC with 10µA Shutdown
MAX1162
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
MAX1162_CUB .................................................0°C to +70°C
MAX1162_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, C
REF
= 4.7µF,
T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
DC ACCURACY (NOTE 1)
Resolution
MAX1162A
Relative Accuracy (Note 2)
INL
MAX1162B
MAX1162C
Differential Nonlinearity
Transition Noise
Offset Error
Gain Error
Offset Drift
Gain Drift
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
Serial Clock Frequency
Aperture Delay
Aperture Jitter
Sample Rate
Track/Hold Acquisition Time
t
CONV
f
SCLK
t
AD
t
AJ
f
S
t
ACQ
f
SCLK
/ 24
1.1
(Note 4)
5
0.1
15
<50
200
240
4.8
µs
MHz
ns
ps
ksps
µs
SINAD
SNR
THD
SFDR
-3dB point
SINAD > 86dB
92
103
4
10
(Note 3)
86
87
DYNAMIC SPECIFICATIONS
(1kHz sine wave, 4.096V
P-P
) (Note 1)
89.5
90
-90
dB
dB
dB
dB
MHz
kHz
(Note 3)
DNL
No missing codes over
temperature
MAX1162C
RMS noise
±0.65
0.1
±0.002
0.4
0.2
1
±0.01
MAX1162A
MAX1162B
-1
16
±2
±2
±4
±1
±1.75
±2
LSB
RMS
mV
%FSR
ppm/
o
C
ppm/
o
C
LSB
LSB
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
16-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, C
REF
= 4.7µF,
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
2.0
1.0
0.1
0.01
0.6
0.3
0.03
0.003
1.0
mA
5.25
5.25
2.5
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
MAX1162
_______________________________________________________________________________________
3
16-Bit, +5V, 200ksps ADC with 10µA Shutdown
MAX1162
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, C
REF
= 4.7µF,
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
SYMBOL
I
AVDD
+
I
DVDD
PSRR
CONDITIONS
CS
= DV
DD
, SCLK = idle
AV
DD
= DV
DD
= +4.75V to +5.25V, full-scale
input (Note 5)
MIN
TYP
0.1
68
MAX
10
UNITS
µA
dB
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
TIMING CHARACTERISTICS (Figures 1, 2, 3, and 6)
(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
_______________________________________________________________________________________
16-Bit, +5V, 200ksps ADC with 10µA Shutdown
MAX1162
Typical Operating Characteristics
(AV
DD
= DV
DD
= +5V, f
SCLK
= 4.8MHz, C
LOAD
= 50pF, C
REF
= 4.7µF, V
REF
= +4.096V, T
A
= +25°C, unless otherwise noted.)
MAX1162 FFT
MAX1162 toc02
MAX1162 toc03
INL vs. OUTPUT CODE
MAX1162 toc01
DNL vs. OUTPUT CODE
2.0
1.5
1.0
DNL (LSB)
0.5
0
-0.5
-1.0
-1.5
-2.0
MAGNITUDE (dB)
0
-20
-40
-60
-80
-100
-120
-140
0
13107
26214
39322
52429
65536
0
OUTPUT CODE
2.0
1.5
1.0
INL (LSB)
0.5
0
-0.5
-1.0
-1.5
-2.0
0
13107
26214
39322
52429
65536
OUTPUT CODE
10 20 30 40 50 60 70 80 90 100
FREQUENCY (kHz)
SINAD vs. FREQUENCY
MAX1162 toc04
SFDR vs. FREQUENCY
120
110
100
90
SFDR (dB)
80
70
60
50
40
30
20
10
0
MAX1162 toc05
THD vs. FREQUENCY
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
MAX1162 toc06
100
90
80
70
SINAD (dB)
60
50
40
30
20
10
0
0.1
1
10
0
100
0.1
1
10
THD (dB)
100
0.1
1
10
100
FREQUENCY (kHz)
FREQUENCY (kHz)
FREQUENCY (kHz)
SUPPLY CURRENT
vs. CONVERSION RATE
MAX1162 toc07
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX1162 toc08
SUPPLY CURRENT vs. TEMPERATURE
MAX1162 toc09
10
3.5
3.0
SUPPLY CURRENT (mA)
2.5
2.0
1.5
1.0
0.5
3.5
3.0
SUPPLY CURRENT (mA)
2.5
2.0
1.5
1.0
0.5
0
1
SUPPLY CURRENT (mA)
0.1
0.01
0.001
0.0001
0.01
0
0.1
1
10
100
1000
4.75
4.85
4.95
5.05
5.15
5.25
CONVERSION RATE (kHz)
SUPPLY VOLTAGE (V)
-40
-15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________
5
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