19-3586; Rev 0; 2/05
KIT
ATION
EVALU
BLE
AVAILA
Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial
Interface
General Description
The MAX5115/MAX5116 quad, 8-bit, digital-to-analog
converters (DACs) feature nonvolatile registers. These
nonvolatile registers store the DAC operating modes
and output states, allowing the DACs to initialize to
specified configurations at power-up.
Precision on-chip output buffers swing rail-to-rail, and
provide 8µs settling time. The I
2
C-compatible, 2-wire
serial interface allows for a maximum clock frequency
of 400kHz.
The MAX5115 has independent high and low reference
inputs allowing maximum output voltage range flexibili-
ty. The MAX5116 has single high and low reference
inputs for all DACs to minimize trace count and save
board space. The reference rails accept voltage inputs
that range from ground to the positive supply rail.
The devices operate from a single +2.7V to +5.25V sup-
ply and consume 200µA per DAC. A software-controlled
power-down mode decreases supply current to less
than 25µA. A software-controlled mute mode sets each
DAC, or both DACs simultaneously, to their respective
REFL_ voltages. The MAX5116 also includes an asyn-
chronous
MUTE
input, that drives all DAC outputs simul-
taneously to their respective REFL_ voltages.
The MAX5115 is available in a 20-pin QSOP, and the
MAX5116 is available in a 16-pin QSOP package. Both
devices are specified for operation over the extended
(-40°C to +85°C) temperature range.
Features
♦
Nonvolatile Registers Initialize DACs to Stored
States
♦
+2.7V to +5.25V Single-Supply Operation
♦
Quad 8-Bit DACs with Independent High and Low
Reference Inputs
♦
Rail-to-Rail Output Buffers
♦
Low 200µA per DAC Supply Current
♦
Power-Down Mode Reduces Supply Current to
25µA (max)
♦
400kHz, I
2
C-Compatible, 2-Wire Serial Interface
♦
Asynchronous
MUTE
Input (MAX5116)
♦
Small 16-/20-Pin QSOP Packages
MAX5115/MAX5116
Ordering Information
PART
MAX5115EEP
MAX5116EEE
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
20 QSOP
16 QSOP
REFERENCE
INPUTS
4
1
Simplified Diagram
V
DD
REFH
MAX5116
DAC0
NONVOLATILE/
VOLATILE
REGISTERS
DAC0
OUT0
Applications
Digital Gain and Offset Adjustments
Programmable Attenuators
Portable Instruments
Power-Amp Bias Control
ATE Calibration
Laser Biasing
SCL
SDA
A3
A2
A1
A0
MUTE
2-WIRE
SERIAL
INTERFACE/
CONTROL
DAC1
NONVOLATILE/
VOLATILE
REGISTERS
DAC1
OUT1
DAC2
NONVOLATILE/
VOLATILE
REGISTERS
DAC2
OUT2
Pin Configuration and Typical Operating Circuit appear at
end of data sheet.
DAC3
NONVOLATILE/
VOLATILE
REGISTERS
DAC3
OUT3
GND
REFL
________________________________________________________________
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.
Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial
Interface
MAX5115/MAX5116
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND, unless otherwise noted.)
V
DD
, A0, A1, A2, A3, SCL, SDA,
MUTE.................-0.3V
to +6.0V
OUT0, OUT1, OUT2, OUT3, REFH0, REFH1, REFH2,
REFH3, REFH, REFL0, REFL1, REFL2, REFL3,
REFL .......................................................-0.3V to (V
DD
+ 0.3V)
Maximum Current into Any Pin .........................................±50mA
Power Dissipation (T
A
= +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW
20-Pin QSOP (derate 9.1mW/°C above +70°C)...........727mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range .............................-60°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
(V
DD
= +2.7V to +5.25V, GND = 0, REFH_ = V
DD
, REFL_ = GND, R
LOAD
= 5kΩ, C
L
= 100pF, T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at V
DD
= +3.0V and T
A
= +25°C.) (Note 1)
PARAMETER
STATIC ACCURACY
Resolution
Integral Nonlinearity
Differential Nonlinearity (Note 2)
Offset Error
Offset Temperature Coefficient
Gain Error
Gain-Error Temperature
Coefficient
Power-Supply Rejection Ratio
PSRR
INL
DNL
ZCE
Code range 0A hex to F0 hex
Full code range
Code range 0A hex to F0 hex
Full code range
Code = 0A hex
Code = 0A hex
Code = F0 hex (Note 3)
Code = F0 hex
Code = FF hex or 0A hex, V
REFH_
= 2.5V,
V
REFL_
= 0, f = DC
±0.002
1
±20
±1
±1
±20
±2
±0.5
8
±1
Bits
LSB
LSB
mV
µV/°C
LSB
LSB/°C
LSB/V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
REFERENCE INPUT (REFH_, REFL_, REFH, REFL)
Input Voltage Range
Input Resistance
Input-Resistance Temperature
Coefficient
Input Capacitance
DAC OUTPUTS (OUT_)
Load Regulation
Output Leakage
Amplifier Output Resistance
DIGITAL INPUTS (A_,
MUTE)
Input High Voltage (Note 4)
V
IH
2.7V
≤
V
DD
< 3.6V
3.6V
≤
V
DD
≤
5.25V
0.7 x
V
DD
2.52
V
Code = F0 hex, R
LOAD
≥
5kΩ
DAC powered down, not muted
0.5V
≤
V
OUT_
≤
(V
DD
- 0.5V)
0.5
±0.5
±1
±10
LSB
µA
Ω
V
REFH_
,
V
REFL_
V
REFH_
≥
V
REFL_
MAX5115
MAX5116
0
320
80
460
115
±35
10
V
DD
600
150
V
kΩ
ppm/°C
pF
2
_______________________________________________________________________________________
Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial
Interface
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +5.25V, GND = 0, REFH_ = V
DD
, REFL_ = GND, R
LOAD
= 5kΩ, C
L
= 100pF, T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at V
DD
= +3.0V and T
A
= +25°C.) (Note 1)
PARAMETER
Input Low Voltage (Note 4)
SYMBOL
V
IL
CONDITIONS
2.7V
≤
V
DD
< 3.6V
3.6V
≤
V
DD
≤
5.25V
Input Hysteresis
Input Leakage Current
Input Capacitance
DIGITAL OUTPUT (SDA)
Output Low Voltage
Tri-State Leakage
Tri-State Output Capacitance
DYNAMIC PERFORMANCE
SCL to OUT_ Settling
Crosstalk
Multiplying Signal-to-Noise Plus
Distortion
Multiplying Bandwidth
Reference Feedthrough
Clock Feedthrough
Output Noise
Power-Up Time
Power-Down Time
INTERFACE PORTS (SCL, SDA)
V
IL
Input Voltage
V
IH
Input Hysteresis
Input Current
Input Capacitance
POWER SUPPLIES
Power-Supply Voltage
Supply Current
Power-Down Current
V
DD
I
DD
I
LOAD
= 0, digital
inputs at GND or
V
DD
Normal operation
During nonvolatile
write
2.70
0.8
5.25
1.3
2
25
mA
µA
V
V
HYS
I
IN
C
IN
5
0.7 x
V
DD
0.05 x
V
DD
±1
V
µA
pF
0.3 x
V
DD
e
N
t
SDR
t
SDN
From power-down state
SINAD
t
COS
(Note 5)
(Note 6)
V
REFH_
= 2.5V
P-P
at 1kHz
V
REFH_
= 2.5V
P-P
at 10kHz
V
REFH_
= 0.5V
P-P
, 3dB bandwidth
V
REFH_
= 2.5V
P-P
at 10kHz (Note 7)
8
55
65
52
325
88
2.5
800
4
1.5
µs
dB
dB
kHz
dB
nVs
nV/√Hz
µs
µs
V
OL
I
L
C
OUT
15
I
SINK
= 3mA
I
SINK
= 6mA
0.4
0.6
±1
V
µA
pF
V
HYS
I
IN
C
IN
V
IN
= 0 or V
DD
10
0.05 x
V
DD
±1
MIN
TYP
MAX
0.3 x
V
DD
1.1
V
µA
pF
UNITS
V
MAX5115/MAX5116
V
_______________________________________________________________________________________
3
Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial
Interface
MAX5115/MAX5116
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +5.25V, GND = 0, REFH_ = V
DD
, REFL_ = GND, R
LOAD
= 5kΩ, C
L
= 100pF, T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at V
DD
= +3.0V and T
A
= +25°C.) (Note 1)
PARAMETER
DIGITAL TIMING (Figure 4, Note 8)
SCL Clock Frequency
Setup Time for START Condition
Hold Time for START Condition
SCL High Time
SCL Low Time
Data Setup Time
Data Hold Time
SDA, SCL Rise Time
SDA, SCL Fall Time
Setup Time for STOP Condition
Bus Free Time Between a STOP
and START Condition
Pulse Width of Spike Suppressed
Maximum Capacitive Load for
Each Bus Line
Write NV Register Busy Time
NONVOLATILE MEMORY RELIABILITY
Data Retention
Endurance
T
A
= +85°C
T
A
= +25°C
T
A
= +85°C
50
200,000
50,000
Years
Stores
f
SCL
t
SU:STA
t
HD:STA
t
HIGH
t
LOW
t
SU:DAT
t
HD:DAT
t
R
t
F
t
SU:STO
t
BUF
t
SP
C
B
(Note 9)
(Note 10)
400
15
0.6
1.3
50
0.6
0.6
0.6
1.3
100
0
0.9
300
300
400
kHz
µs
µs
µs
µs
ns
µs
ns
ns
µs
µs
ns
pF
ms
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2:
Guaranteed monotonic.
Note 3:
Gain error is defined as:
256
×
(V
F0,Meas
−
ZCE
−
V
F0,Ideal
)
V
REFH _
where V
F0,Meas
is the DAC voltage with input code F0 hex and V
F0,Ideal
is the ideal DAC voltage with input code F0 hex or
(V
REFH
- V
REFL
) x (240 / 256) + V
REFL
.
Note 4:
The device draws higher supply current when the digital inputs are driven with voltages between (V
DD
- 0.5V) and (GND +
0.5V). See Supply Current vs. Digital Input Voltage in the
Typical Operating Characteristics.
Note 5:
Output settling time is measured from the 50% point of the rising edge of the last SCL of the data byte to 0.5 LSB of OUT_’s
final value for a code transition from 10 hex to F0 hex.
Note 6:
Crosstalk is defined as the coupling from a DAC switching from code 00 hex to code FF hex to any other DAC that is in a
steady state at code 00 hex.
Note 7:
Reference feedthrough is defined as the coupling from one driven reference with input code = FF hex to any other DAC
output with the reference of the DAC at a constant value and input code = 00 hex.
Note 8:
SCL clock period includes rise and fall times t
R
and t
F
. All digital input signals are specified with t
R
= t
F
= 2ns and timed
from a voltage level of (V
IL
+ V
IH
) / 2.
Note 9:
An appropriate bus pullup resistance must be selected depending on board capacitance. Refer to the document linked to
this web address: www.semiconductors.philips.com/acrobat/literature/9398/39340011.pdf.
Note 10:
The busy time begins from the initiation of the stop pulse.
4
_______________________________________________________________________________________
Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial
Interface
Typical Operating Characteristics
(V
DD
= +3V, V
REFH_
= +3V, V
REFL_
= GND, R
L
= 5kΩ, C
L
= 100pF, T
A
= +25°C, unless otherwise noted.)
MAX5115/MAX5116
INTEGRAL NONLINEARITY
vs. INPUT CODE
MAX5115/5116 toc01
INTEGRAL NONLINEARITY
vs. SUPPLY VOLTAGE
MAX5115/5116 toc02
INTEGRAL NONLINEARITY
vs. TEMPERATURE
1.75
INTEGRAL NONLINEARITY (LSB)
1.50
1.25
1.00
0.75
0.50
0.25
0
-40
-15
10
35
60
85
MAX5115/5116 toc03
2.0
INTEGRAL NONLINEARITY (LSB)
1.5
1.0
0.5
0
-0.5
-1.0
0
64
128
INPUT CODE
192
2.00
1.75
INTEGRAL NONLINEARITY (LSB)
1.50
1.25
1.00
0.75
0.50
0.25
2.00
256
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
DIFFERENTIAL NONLINEARITY
vs. INPUT CODE
MAX5115/5116 toc04
DIFFERENTIAL NONLINEARITY
vs. SUPPLY VOLTAGE
MAX5115/5116 toc05
DIFFERENTIAL NONLINEARITY
vs. TEMPERATURE
MAX5115/5116 toc06
1.00
DIFFERENTIAL NONLINEARITY (LSB)
0.75
0.50
0.25
0
-0.25
-0.50
-0.75
-1.00
0
64
128
INPUT CODE
192
0
DIFFERENTIAL NONLINEARITY (LSB)
-0.25
-0.50
-0.75
-1.00
-1.25
-1.50
2.5
3.0
3.5
4.0
4.5
5.0
-0.8
DIFFERENTIAL NONLINEARITY (LSB)
-0.9
-1.0
-1.1
256
-1.2
5.5
-40
-15
10
35
60
85
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
OFFSET ERROR vs. SUPPLY VOLTAGE
MAX5115/5116 toc07
OFFSET ERROR vs. TEMPERATURE
MAX5115/5116 toc08
GAIN ERROR vs. SUPPLY VOLTAGE
MAX5115/5116 toc09
0.5
0.40
-0.06
-0.08
GAIN ERROR (LSB)
-0.10
-0.12
-0.14
-0.16
-0.18
OFFSET ERROR (LSB)
0.3
OFFSET ERROR (LSB)
0.4
0.35
0.30
0.2
0.25
0.1
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
0.20
-40
-15
10
35
60
85
TEMPERATURE (°C)
-0.20
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
5
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