19-1873; Rev 1; 1/11
8-Bit CODECs
General Description
The MAX1102/MAX1103/MAX1104 CODECs provide
both an 8-bit analog-to-digital converter (ADC) and an
8-bit digital-to-analog converter (DAC) with a 4-wire
logic interface. The MAX1102/MAX1103 include an
onboard +2V/+4V reference, providing a well-regulat-
ed, low noise reference for both the ADC and DAC.
The MAX1104 offers ratiometric conversion, with the
reference internally connected to V
DD
.
The MAX1102/MAX1103/MAX1104 are low-cost, low-
power CODECs for use with microcontrollers (µCs).
They allow for greater flexibility when selecting a µC.
Less expensive µCs without onboard converters can be
used while maintaining overall system performance.
The MAX1102 operates from a single +2.7V to +3.6V
supply, the MAX1103 operates from a +4.5V to +5.5V
supply, and the MAX1104 operates from a +2.7V to
+5.5V supply. The MAX1102/MAX1103 incorporate a
V
DD
monitor in addition to AIN for power supply moni-
toring. All devices feature a low 18µA standby mode,
where both data converters are disabled while the ref-
erence remains active, and three shutdown modes:
ADC disabled, DAC disabled, and complete shutdown
(1µA). A quick 10µs wake-up time allows the
MAX1102/MAX1103/MAX1104 to cycle in and out of
shutdown even during short-duration idle times.
The MAX1102/MAX1103/MAX1104 are available in a
space-saving 8-pin µMAX
®
package.
o
8-Bit ADC
±1LSB INL
Built-In Track-and-Hold
48dB of SINAD
o
8-Bit DAC
±1LSB INL
55dB of SFDR
o
Internal Conversion Clock
o
Single-Supply Operation
+2.7V to +3.6V (MAX1102)
+4.5V to +5.5V (MAX1103)
+2.7V to +5.5V (MAX1104)
o
Low Power Consumption
0.5mA at 25ksps
1µA Shutdown Mode
o
6MHz 4-Wire SPI™, QSPI™, and MICROWIRE™
Compatible Interface
o
Compact 8-Pin
µMAX
Package
o
Internal Voltage Reference
+2V: MAX1102
+4V: MAX1103
o
Power-Supply Monitor (MAX1102/MAX1103)
o
Rail-to-rail DAC Output Buffer
Features
MAX1102/MAX1103/MAX1104
Ordering Information
PART
MAX1102EUA+
MAX1103EUA+
MAX1104EUA+
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 µMAX
8 µMAX
8 µMAX
REFERENCE
+2V
+4V
V
DD
________________________Applications
Analog I/O for Microcontrollers
Analog System Signal Supervision
Voice Recording and Playback
Functional Diagram
V
DD
MAX1102
MAX1103
MAX1104
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Pin Configuration
V
DD/2
TOP VIEW
AIN
CS
SCLK
DIN
DOUT
SERIAL
INTERFACE
AND
CONTROL
LOGIC
ADC
T/H
VOLTAGE
REFERENCE
DAC
LATCH
DAC
V
DD
GND
AOUT
1
2
3
4
+
8
DIN
DOUT
SCLK
CS
AIN
OUT
MAX1102
MAX1103
MAX1104
µMAX
7
6
5
GND
µMAX is a registered trademark of Maxim Integrated Products, Inc.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp
________________________________________________________________
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.
8-Bit CODECs
MAX1102/MAX1103/MAX1104
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND ..............................................................-0.3V to +6V
AIN, OUT, DOUT to GND ...........................-0.3V to (V
DD
+ 0.3V)
DIN, SCLK,
CS
to GND ............................................-0.3V to +6V
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C) .................330mW
Operating Temperature Range ...........................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering,10s) ..................................+300°C
Soldering Temperature (reflow) .......................................+260°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
(V
DD
= +2.7V to +3.6V (MAX1102), V
DD
= +4.5V to +5.5V (MAX1103), V
DD
= +2.7V to +5.5V (MAX1104), f
SCLK
= 6.0MHz (50% duty
cycle), R
OUT
= 10kΩ, C
OUT
= 100pF, T
A
= T
MIN
to T
MAX
. Typical values are at T
A
= +25°C, unless otherwise noted.)
PARAMETER
ADC DC ACCURACY
(Note 1)
Resolution
Relative Accuracy
(Note 2)
Differential Nonlinearity
Offset Error
Gain Error
(Note 3)
MAX1102/MAX1103
MAX1104
INL
DNL
All codes
Guaranteed monotonic
8
±1/4
±1/4
±1
±1
±1
±5
±1
Bits
LSB
LSB
LSB
%
LSB
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ADC DYNAMIC SPECIFICATIONS (f
AIN
= 10kHz SINE WAVE. V
AIN
= 0.9
✕
V
REFp-p
)
Signal to Noise and Distortion
Ratio
Spurious-Free Dynamic Range
Total Harmonic Distortion
Full-Power Bandwidth
ADC Wake-Up Time from
Standby
ADC Wake-Up Time from Full
Shutdown
ANALOG INPUT
Analog Input Voltage
Input Resistance
Input Capacitance
VOLTAGE REFERENCE
Reference Voltage
Temperature Coefficient
CONVERSION RATE
Conversion Time
Track/Hold Acquisition Time
Internal Clock Frequency
t
CONV
t
ACQ
375
24
36
3.5
µs
µs
kHz
V
REF
MAX1102
MAX1103
MAX1102/MAX1103
2
4
100
V
ppm/
o
C
V
AIN
R
IN
C
IN
0
10
20
V
REF
V
MΩ
pF
Reference enabled (MAX1102/MAX1103)
MAX1102/MAX11103
MAX1104
SINAD
SFDR
THD
48
59
58
2.5
3
200
3
dB
dB
dB
MHz
µs
µs
2
_______________________________________________________________________________________
8-Bit CODECs
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +3.6V (MAX1102), V
DD
= +4.5V to +5.5V (MAX1103), V
DD
= +2.7V to +5.5V (MAX1104), f
SCLK
= 6.0MHz (50% duty
cycle), R
OUT
= 10kΩ, C
OUT
= 100pF, T
A
= T
MIN
to T
MAX
. Typical values are at T
A
= +25°C unless otherwise noted.)
PARAMETER
Throughput Rate
DAC DC ACCURACY
Resolution
Relative Accuracy
(Note 2)
Differential Nonlinearity
Offset Error
MAX1104
DAC DYNAMIC SPECIFICATIONS (f
OUT
= 1kHz SINE WAVE, V
OUT
= 0.9
✕
V
REFp-p
)
Spurious-Free Dynamic Range
Total Harmonic Distortion
Small-Signal Bandwidth
Full-Power Bandwidth
DAC Wake-Up Time from
Standby (Note 4)
DAC Wake-Up Time from Full
Shutdown (Note 4)
DAC OUTPUT
Full-Scale Swing
Settling Time (Note 5)
Slew Rate
Load Regulation
R
L
open to 10kΩ
0 < V
OUT
< V
DD
- 0.1V
V
DD
x
0.7
V
DD
x
0.3
V
LOGIC
= V
GND
or V
DD
±0.1
0.5
15
V
OH
V
OL
I
LEAK
I
SOURCE
= 1.0mA
I
SINK
= 1.0mA
V
DD
x
0.9
V
DD
x
0.1
±5.0
±5
MAX1104
Settle to within
±1/2
LSB
0
11
1.2
0.05
V
DD
-
0.1
V
µs
Vµs
LSB
Reference enabled (MAX1102/MAX1103)
MAX1102/MAX1103
MAX1104
10
SFDR
THD
55
53
1
72
10
200
Gain Error
(Note 3)
MAX1102/MAX1103
INL
DNL
Guaranteed monotonic
8
±1/4
±1/4
±1
±1
±30
±5
±30
Bits
LSB
LSB
mV
%
mV
dB
dB
MHz
kHz
µs
SYMBOL
CONDITIONS
ADC in continuous conversion mode
MIN
25
TYP
MAX
UNITS
ksps
MAX1102/MAX1103/MAX1104
µs
LOGIC INPUTS AND OUTPUTS (DIN, SLCK,
CS)
Input High Voltage
Input Low Voltage
Input Current
Digital Input Hysteresis
Digital Input Capacitance
Output High Voltage
Output Low Voltage
Three-State Leakage
V
IH
V
IL
V
V
µA
V
pF
V
V
µA
_______________________________________________________________________________________
3
8-Bit CODECs
MAX1102/MAX1103/MAX1104
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +3.6V (MAX1102), V
DD
= +4.5V to +5.5V (MAX1103), V
DD
= +2.7V to +5.5V (MAX1104), f
SCLK
= 6.0MHz (50% duty
cycle), R
OUT
= 10kΩ, C
OUT
= 100pF, T
A
= T
MIN
to T
MAX
. Typical values are at T
A
= +25°C unless otherwise noted.)
PARAMETER
SYMBOL
MAX1102
Supply Voltage
V
DD
MAX1103
MAX1104
Supply Current
Standby Current
Full Shutdown Current
I
CC
ADC on (25ksps), DAC off
ADC off, DAC on (V
DD
= +5.5V)
ADC off, DAC off, clock off, reference on
ADC off, DAC off, clock off
CONDITIONS
MIN
2.7
4.5
2.7
0.25
0.4
18
1
TYP
MAX
3.6
5.5
5.5
0.5
0.66
35
mA
µA
µA
V
UNITS
POWER SUPPLY REQUIREMENTS
TIMING CHARACTERISTICS (Figures 4a and 4b)
(V
DD
= +2.7V to +3.6V (MAX1102), V
DD
= +4.5V to +5.5V (MAX1103), V
DD
= +2.7V to +5.5V (MAX1104), f
SCLK
= 6.0MHz (50% duty
cycle), R
OUT
= 10kΩ, C
OUT
= 100pF, T
A
= T
MIN
to T
MAX
. Typical values are at T
A
= +25°C unless otherwise noted.)
PARAMETER
Power Up to Reset Complete
CS
Rise-to-DOUT = High-Z
CS
Fall-to-DOUT Valid
CS
Fall-to-SCLK Rise
SCLK Fall-to-CS Rise
DIN-to-SCLK Setup Time
DIN-to-SCLK Hold Time
SCLK Fall to DOUT Valid
SCLK Maximum Frequency
SCLK Pulse Width High
SCLK Pulse Width Low
SYMBOL
t9
t10
t11
t3
t8
t4
t5
t6
f
SCLK
t
CH
t
CL
60
70
R
DOUT
= 3kΩ, C
DOUT
= 50pF
R
DOUT
= 3kΩ, C
DOUT
= 50pF
15
25
10
15
78
6
CONDITIONS
MIN
TYP
40
40
60
MAX
UNITS
µs
ns
ns
ns
ns
ns
ns
ns
MHz
ns
ns
Note 1:
MAX1102/MAX1104 tested with V
DD
= +3V. MAX1103 tested with V
DD
= +5V.
Note 2:
Relative accuracy is the deviation of the analog value at any code from its theoretical value after the gain error and offset
error have been nulled.
Note 3:
Gain error calculation is referenced to the ideal FS output. Gain error for the MAX1102/MAX1103 also includes reference ini-
tial accuracy error.
Note 4:
Wake-up time is the time it takes for the DAC output to settle to within ±1/2 LSB of the FS value after a power-up command.
Note 5:
Output settling time is measured by taking the DAC from code 00hex to FFhex.
4
_______________________________________________________________________________________
8-Bit CODECs
Typical Operating Characteristics
(V
DD
= +3.0V (MAX1102), V
DD
= +5V (MAX1103), f
SCLK
= 6.0MHz (50% duty cycle), R
OUT
= 10kΩ, C
OUT
= 100pF, T
A
= +25°C,
unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(ADC ENABLED, DAC DISABLED)
MAX1102 toc01
MAX1102/MAX1103/MAX1104
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(DAC ENABLED, ADC DISABLED)
MAX1102 toc02
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(ADC ENABLED, DAC ENABLED)
450
400
SUPPLY CURRENT (µA)
350
300
250
200
150
100
DAC CODE = 00hex
DAC CODE = FFhex
MAX1102 toc03
300
250
SUPPLY CURRENT (µA)
200
150
100
50
0
2.5
CODE = AAhex
350
300
SUPPLY CURRENT (µA)
250
200
CODE = 00hex
150
100
50
0
CODE = FFhex
500
50
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
2.5
SUPPLY VOLTAGE (V)
ADC CODE = AAhex
3.0
3.5
4.0
4.5
5.0
5.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT vs.
SUPPLY VOLTAGE
MAX1102 toc04
ADC OFFSET ERROR vs.
SUPPLY VOLTAGE
MAX1102 toc05
DAC OFFSET ERROR
vs. SUPPLY VOLTAGE
CODE = 0Ahex
MAX1102 toc06
20
5.0
4.5
4.0
OFFSET ERROR (mV)
3.5
3.0
2.5
2.0
1.5
1.0
10
SUPPLY CURRENT (µA)
OFFSET ERROR (mV)
15
ADC and DAC OFF
REFERENCE ON
9
8
10
7
5
ADC, DAC, and
REFERENCE OFF
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
6
0.5
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
5
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
ADC GAIN ERROR
vs. SUPPLY VOLTAGE
MAX1102 toc07
ADC GAIN ERROR vs. TEMPERATURE
MAX1102 toc08
DAC GAIN ERROR vs. SUPPLY VOLTAGE
9
8
GAIN ERROR (mV)
7
6
5
4
3
2
1
0
V
REF
= 2.0V
CODE = FFhex
MAX1102 toc09
2.00
1.75
1.50
GAIN ERROR (%FS)
1.25
1.00
0.75
0.50
0.25
0
2.5
10
9
8
GAIN ERROR (mV)
7
6
5
4
3
2
1
0
V
REF
= 2.0V
CODE = 7Fhex
10
V
REF
= 2.0V
CODE = FFhex
3.0
3.5
4.0
4.5
5.0
5.5
-40
-15
10
35
60
85
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
5
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