19-2551; Rev 0; 6/02
Low-Power, 16-Bit Analog-to-Digital Converters
with Parallel Interface
General Description
The MAX1165/MAX1166 16-bit, low-power, successive-
approximation analog-to-digital converters (ADCs) fea-
ture automatic power-down, factory-trimmed internal
clock, and a 16-bit wide (MAX1165) or byte wide
(MAX1166) 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 MAX1165/MAX1166 use an internal 4.096V refer-
ence or an external reference. The MAX1165/MAX1166
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 MAX1165/MAX1166 are ideal for high-perfor-
mance, battery-powered, data-acquisition applications.
Excellent dynamic performance and low power con-
sumption in a small package make the MAX1165/
MAX1166 ideal for circuits with demanding power con-
sumption and space requirements.
The 16-bit wide MAX1165 is available in a 28-pin
TSSOP package and the byte wide MAX1166 is avail-
able 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.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Features
o
16-Bit Wide (MAX1165) and Byte Wide (MAX1166)
Parallel Interface
o
High Speed: 165ksps Sample Rate
o
Accurate: ±2LSB INL, 16 Bit No Missing Codes
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)
0.1µA (10ksps, External Reference)
o
Small Footprint
28-Pin TSSOP Package (16-Bit Wide)
20-Pin TSSOP Package (Byte Wide)
MAX1165/MAX1166
Ordering Information
PART
MAX1165ACUI*
MAX1165BCUI
MAX1165CCUI
MAX1165AEUI*
MAX1165BEUI*
MAX1165CEUI*
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
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
INL
±2
±2
±4
±2
±2
±4
Applications
Temperature Sensor/Monitor
Industrial Process Control
I/O Boards
Data-Acquisition Systems
Cable/Harness Tester
Accelerometer Measurements
Digital Signal Processing
*Future
product—contact factory for availability.
Ordering Information continued at end of data sheet.
Typical Operating Circuit
+5V ANALOG
+5V DIGITAL
0.1µF
0.1µF
µP
DATA
BUS
Pin Configurations appear at end of data sheet.
Functional Diagram appears at end of data sheet.
ANALOG INPUT
AIN
AV
DD
DV
DD
D0–D15
MAX1165
R/C
CS
RESET
EOC
REF
REFADJ
AGND DGND
0.1µF
4.7µF
________________________________________________________________
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.
Low-Power, 16-Bit Analog-to-Digital Converter
with Parallel Interface
MAX1165/MAX1166
ABSOLUTE MAXIMUM RATINGS
AV
DD
to AGND .........................................................-0.3V to +6V
DV
DD
to DGND ........................................-0.3V to (AV
DD
+ 0.3V)
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 (D15–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
MAX116_ _CU_ ...................................................0°C to +70°C
MAX116_ _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
= 4.7µF, 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)
N
MAX116_A
INL
MAX116_B
MAX116_C
Differential Nonlinearity
DNL
No missing codes
over temperature
MAX116_C
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
27
<100
165
ksps
ns
ps
SINAD
SNR
THD
SFDR
-3dB point
SINAD > 81dB
92
86
87
90
90
-102
105
4
33
-90
dB
dB
dB
dB
MHz
kHz
(Note 2)
RMS noise, external reference, includes
quantization noise
Internal reference
0.65
0.7
0.05
±0.002
0.6
0.2
1
±0.02
MAX116_A
MAX116_B
-1
16
±2
±2
±4
±1
±1.5
±2
LSB
RMS
LSB
RMS
mV
%FSR
ppm/°C
ppm/°C
LSB
LSB
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
Low-Power, 16-Bit Analog-to-Digital Converter
with Parallel Interface
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +5V, external reference = +4.096V, C
REF
= 4.7µF, 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
DIGITAL INPUTS/OUTPUTS
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
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
2.7
2.0
1.0
1.0
1.8
1.1
0.1
0.01
2.3
mA
5.25
AV
DD
3.2
V
V
V
IH
V
IL
I
IN
V
HYST
C
IN
V
OH
V
OL
I
OZ
C
OZ
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–D15
±0.1
15
DV
DD
-
0.4
0.4
±10
V
IH
= 0 or DV
DD
±0.1
0.1
15
0.7
×
DV
DD
0.3
×
DV
DD
±1
V
V
µA
V
pF
V
V
µA
pF
I
REF
To power down the internal reference
Internal reference disabled
V
REF
= +4.096V, f
SAMPLE
= 165ksps
Shutdown mode
AV
DD
-
0.4
3.8
50
±0.1
AV
DD
-
0.1
AV
DD
120
V
V
µA
V
REF
TC
REF
I
REFSC
C
REFADJ
C
REF
I
REFADJ
0.1
1
20
4.056
4.096
±25
±10
4.136
V
ppm/°C
mA
µF
µF
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX1165/MAX1166
_______________________________________________________________________________________
3
Low-Power, 16-Bit Analog-to-Digital Converter
with Parallel Interface
MAX1165/MAX1166
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +5V, external reference = +4.096V, C
REF
= 4.7µF, 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–D15 = all zeros
100ksps
10ksps
1ksps
Full power-down
Shutdown Supply Current
I
SHDN
REF and REF buffer enabled
(standby mode)
I
AVDD
I
DVDD
I
AVDD
I
DVDD
(Note 3)
MIN
TYP
0.5
0.3
0.03
0.003
0.5
0.5
1.0
0.5
68
5
5
1.2
5
µA
mA
µA
dB
MAX
0.7
mA
UNITS
Power-Supply Rejection Ratio
PSRR
AV
DD
= +5V ±5%, full-scale input (Note 4)
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
= 4.7µF, C
REFADJ
= 0.1µF, C
LOAD
= 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 (Note 5)
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 (MAX1166 Only)
EOC
Fall to
CS
Fall
CS
Rise to
EOC
Rise
Bus Relinquish Time (Note 5)
SYMBOL
t
ACQ
t
CONV
t
CSH
t
CSL
t
DS
t
DH
t
DO
t
DO1
t
DV
t
EOC
t
BR
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 5.25V
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 5.25V
V
DVDD
= 4.75V to 5.25V
V
DVDD
= 2.7V to 5.25V
0
40
80
40
80
(Note 5)
V
DVDD
= 4.75V to 5.25V
V
DVDD
= 2.7V to 5.25V
40
40
60
0
40
60
40
80
40
80
CONDITIONS
MIN
1.1
4.7
TYP
MAX
UNITS
µs
ns
ns
ns
ns
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:
Shutdown supply currents are typically 0.5µA, maximum specification is limited by automated test equipment.
Note 4:
Defined as the change in positive full scale caused by a ±5% variation in the nominal supply.
Note 5:
To ensure best performance, finish reading the data and wait t
BR
before starting a new acquisition.
4
_______________________________________________________________________________________
Low-Power, 16-Bit Analog-to-Digital Converter
with Parallel Interface
Typical Operating Characteristics
(AV
DD
= DV
DD
= +5V, external reference = +4.096V, C
REF
= 4.7µF, C
REFADJ
= 0.1µF, T
A
= +25°C, unless otherwise noted.)
INL vs. OUTPUT CODE
MAX1165/66 toc01
MAX1165/MAX1166
DNL vs. OUTPUT CODE
MAX1165/66 toc02
IAV
DD
+ IDV
DD
SUPPLY CURRENT
vs. SAMPLE RATE
MAX1165/66 toc03
2.0
1.5
1.0
INL (LSB)
0.5
0
-0.5
-1.0
-1.5
-2.0
0
16384
32768
OUTPUT CODE
49152
2.0
1.5
1.0
DNL (LSB)
0.5
0
-0.5
-1.0
-1.5
-2.0
10
1
SUPPLY CURRENT (mA)
0.1
0.01
0.001
0.0001
0
16384
32768
OUTPUT CODE
49152
66536
0.01
0.1
1
10
100
1000
SAMPLE RATE (ksps)
65536
IAV
DD
+ IDV
DD
SUPPLY CURRENT
vs. TEMPERATURE
MAX1165/66 toc04
IAV
DD
+ IDV
DD
SHUTDOWN CURRENT
vs. TEMPERATURE
4.5
SHUTDOWN CURRENT (µA)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
MAX1165/66 toc05
INTERNAL REFERENCE
vs. TEMPERATURE
4.126
INTERNAL REFERENCE (V)
4.116
4.106
4.096
4.086
4.076
4.066
4.056
MAX1165/66 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
MAX1165/66 toc07
GAIN ERROR
vs. TEMPERATURE
MAX1165/66 toc08
SINAD vs. FREQUENCY
90
80
70
SINAD (dB)
60
50
40
30
20
10
0
SAMPLE RATE = 165ksps
0.1
1
10
100
MAX1165/66 toc09
1000
800
600
OFFSET ERROR (µV)
400
200
0
-200
-400
-600
-800
-1000
-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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