MAX1162 DS
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 SPITM/QSPITM/MICROWIRETM-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. AutoShutdownTM 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.
Applications
Motor Control
Industrial Process Control
Industrial I/O Modules
Data-Acquisition Systems
Thermocouple Measurements
Accelerometer Measurements
Portable- and Battery-Powered Equipment
Features
o 16-Bit Resolution, No Missing Codes
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
MAX1162
16-Bit, +5V, 200ksps ADC with 10µA Shutdown
________________________________________________________________ Maxim Integrated Products
1
1
2
3
4
5
10
9
8
7
6
AIN
AGND
DV
DD
DGND
CS
AGND
AV
DD
REF
MAX1162
µMAX/DFN
TOP VIEW
DOUT
SCLK
Pin Configuration
Ordering Information
19-2525; Rev 0; 7/02
Functional Diagram appears at end of data sheet.
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.
PART
TEMP
RANGE
PIN-
PACKAGE
INL
(LSB)
MAX1162ACUB
0°C to +70
°C
10 µMAX
±2
MAX1162AC_B*
0°C to +70
°C
10 DFN
±2
MAX1162BCUB
0
°C to +70°C
10 µMAX
±2
MAX1162BC_B*
0
°C to +70°C
10 DFN
±2
MAX1162CCUB
0
°C to +70°C
10 µMAX
±4
MAX1162CC_B*
0
°C to +70°C
10 DFN
±4
MAX1162AEUB
-40
°C to +85°C
10 µMAX
±2
MAX1162AE_B*
-40
°C to +85°C
10 DFN
±2
MAX1162BEUB
-40
°C to +85°C
10 µMAX
±2
MAX1162BE_B*
-40
°C to +85°C
10 DFN
±2
MAX1162CEUB
-40
°C to +85°C
10 µMAX
±4
MAX1162CE_B*
-40
°C to +85°C
10 DFN
±4
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.
*Future product--contact factory for DFN package availability.
MAX1162
16-Bit, +5V, 200ksps ADC with 10µA Shutdown
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.)
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.
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
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC ACCURACY (NOTE 1)
Resolution
16
Bits
MAX1162A
±2
MAX1162B
±2
Relative Accuracy (Note 2)
INL
MAX1162C
±4
LSB
MAX1162A
±1
No missing codes over
temperature
MAX1162B
-1
±1.75
Differential Nonlinearity
DNL
MAX1162C
±2
LSB
Transition Noise
RMS noise
±0.65
LSB
RMS
Offset Error
0.1
1
mV
Gain Error
(Note 3)
±0.002
±0.01
%FSR
Offset Drift
0.4
ppm/
o
C
Gain Drift
(Note 3)
0.2
ppm/
o
C
DYNAMIC SPECIFICATIONS (1kHz sine wave, 4.096V
P-P
) (Note 1)
Signal-to-Noise Plus Distortion
SINAD
86
89.5
dB
Signal-to-Noise Ratio
SNR
87
90
dB
Total Harmonic Distortion
THD
-90
dB
Spurious-Free Dynamic Range
SFDR
92
103
dB
Full-Power Bandwidth
-3dB point
4
MHz
Full-Linear Bandwidth
SINAD > 86dB
10
kHz
CONVERSION RATE
Conversion Time
t
CONV
(Note 4)
5
240
µs
Serial Clock Frequency
f
SCLK
0.1
4.8
MHz
Aperture Delay
t
AD
15
ns
Aperture Jitter
t
AJ
<50
ps
Sample Rate
f
S
f
SCLK
/ 24
200
ksps
Track/Hold Acquisition Time
t
ACQ
1.1
µs
MAX1162
16-Bit, +5V, 200ksps ADC with 10µA Shutdown
_______________________________________________________________________________________
3
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
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG INPUT (AIN)
Input Range
V
AIN
0
V
REF
V
Input Capacitance
C
AIN
40
pF
EXTERNAL REFERENCE
Input Voltage Range
V
REF
3.8
AV
DD
V
V
REF
= +4.096V, f
SCLK
= 4.8MHz
100
V
REF
= +4.096V, SCLK idle
0.01
Input Current
I
REF
CS = DV
DD
, SCLK idle
0.01
µA
DIGITAL INPUTS (SCLK, CS)
Input High Voltage
V
IH
DV
DD
= +2.7V to +5.25V
0.7 x
DV
DD
V
Input Low Voltage
V
IL
DV
DD
= +2.7V to +5.25V
0.3 x
DV
DD
V
Input Leakage Current
I
IN
V
IN
= 0 to DV
DD
±0.1
±1
µA
Input Hysteresis
V
HYST
0.2
V
Input Capacitance
C
IN
15
pF
DIGITAL OUTPUT (DOUT)
Output High Voltage
V
OH
I
SOURCE
= 0.5mA, DV
DD
= +2.7V to +5.25V
DV
DD
-
0.25V
V
I
SINK
= 10mA, DV
DD
= +4.75V to +5.25V
0.7
Output Low Voltage
V
OL
I
SINK
= 1.6mA, DV
DD
= +2.7V to +5.25V
0.4
V
Three-State Output Leakage
Current
I
L
CS = DV
DD
±0.1
±10
µA
Three-State Output Capacitance
C
OUT
CS = DV
DD
15
pF
POWER SUPPLIES
Analog Supply
AV
DD
4.75
5.25
V
Digital Supply
DV
DD
2.7
5.25
V
200ksps
2.0
2.5
100ksps
1.0
10ksps
0.1
Analog Supply Current
I
AVDD
CS = DGND
1ksps
0.01
mA
200ksps
0.6
1.0
100ksps
0.3
10ksps
0.03
Digital Supply Current
I
DVDD
CS = DGND,
DOUT = all
zeros
1ksps
0.003
mA
MAX1162
16-Bit, +5V, 200ksps ADC with 10µA Shutdown
4
_______________________________________________________________________________________
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.
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
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Acquisition Time
t
ACQ
1.1
µs
SCLK to DOUT Valid
t
DO
C
DOUT
= 50pF
50
ns
CS Fall to DOUT Enable
t
DV
C
DOUT
= 50pF
80
ns
CS Rise to DOUT Disable
t
TR
C
DOUT
= 50pF
80
ns
CS Pulse Width
t
CSW
50
ns
CS Fall to SCLK Rise Setup
t
CSS
100
ns
CS Rise to SCLK Rise Hold
t
CSH
0
ns
SCLK High Pulse Width
t
CH
65
ns
SCLK Low Pulse Width
t
CL
65
ns
SCLK Period
t
CP
208
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
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Acquisition Time
t
ACQ
1.1
µs
SCLK to DOUT Valid
t
DO
C
DOUT
= 50pF
100
ns
CS Fall to DOUT Enable
t
DV
C
DOUT
= 50pF
100
ns
CS Rise to DOUT Disable
t
TR
C
DOUT
= 50pF
80
ns
CS Pulse Width
t
CSW
50
ns
CS Fall to SCLK Rise Setup
t
CSS
100
ns
CS Rise to SCLK Rise Hold
t
CSH
0
ns
SCLK High Pulse Width
t
CH
65
ns
SCLK Low Pulse Width
t
CL
65
ns
SCLK Period
t
CP
208
ns
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
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Shutdown Supply Current
I
AVDD
+
I
DVDD
CS = DV
DD
, SCLK = idle
0.1
10
µA
Power-Supply Rejection Ratio
PSRR
AV
DD
= DV
DD
= +4.75V to +5.25V, full-scale
input (Note 5)
68
dB
MAX1162
16-Bit, +5V, 200ksps ADC with 10µA Shutdown
_______________________________________________________________________________________
5
INL vs. OUTPUT CODE
MAX1162 toc01
OUTPUT CODE
INL (LSB)
52429
39322
13107
26214
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
-2.0
0
65536
DNL vs. OUTPUT CODE
MAX1162 toc02
OUTPUT CODE
DNL (LSB)
52429
39322
26214
13107
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
-2.0
0
65536
90
80
70
60
50
40
30
20
10
-120
-100
-80
-60
-40
-20
0
-140
0
100
MAX1162 FFT
MAX1162 toc03
FREQUENCY (kHz)
MAGNITUDE (dB)
SINAD vs. FREQUENCY
MAX1162 toc04
FREQUENCY (kHz)
SINAD (dB)
10
1
10
20
30
40
50
60
70
80
90
100
0
0.1
100
SFDR vs. FREQUENCY
MAX1162 toc05
FREQUENCY (kHz)
SFDR (dB)
10
1
10
20
30
40
50
60
70
80
90
100
110
120
0
0.1
100
THD vs. FREQUENCY
MAX1162 toc06
FREQUENCY (kHz)
THD (dB)
10
1
0.1
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
0
10
0.01
0.1
1
10
100
1000
1
0.1
0.01
0.001
0.0001
SUPPLY CURRENT
vs.
CONVERSION RATE
MAX1162 toc07
CONVERSION RATE (kHz)
SUPPLY CURRENT (mA)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX1162 toc08
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.15
5.05
4.95
4.85
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
4.75
5.25
SUPPLY CURRENT vs. TEMPERATURE
MAX1162 toc09
TEMPERATURE (
°C)
SUPPLY CURRENT (mA)
60
35
10
-15
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
-40
85
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.)
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