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MAX1069AEUD+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
MAX1069
58.6ksps, 14-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
________________________________________________________________
Maxim Integrated Products
1
19-2652; Rev 2; 12/10
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.
General Description
The MAX1069 is a low-power, 14-bit successive-
approximation analog-to-digital converter (ADC). The
device features automatic power-down, an on-chip
4MHz clock, a +4.096V internal reference, and an I
2
C-
compatible 2-wire serial interface capable of both fast
and high-speed modes.
The MAX1069 operates from a single supply and con-
sumes 5mW at the maximum conversion rate of
58.6ksps. AutoShutdown™ powers down the device
between conversions, reducing supply current to less
than 50µA at a 1ksps throughput rate. The option of a
separate digital supply voltage allows direct interfacing
with +2.7V to +5.5V digital logic.
The MAX1069 performs a unipolar conversion on its
single analog input using its internal 4MHz clock. The
full-scale analog input range is determined by the inter-
nal reference or by an externally applied reference volt-
age ranging from 1V to V
AVDD
.
The four address select inputs (ADD0–ADD3) allow up
to 16 MAX1069 devices on the same bus.
The MAX1069 is packaged in a 14-pin TSSOP and
offers both commercial and extended temperature
ranges. Refer to the MAX1169 for a 16-bit device in a
pin-compatible package.
Applications
Hand-Held Portable Applications
Medical Instruments
Battery-Powered Test Equipment
Solar-Powered Remote Systems
Receive Signal Strength Indicators
System Supervision
Features
o High-Speed I
2
C-Compatible Serial Interface
400kHz Fast Mode
1.7MHz High-Speed Mode
o +4.75V to +5.25V Single Supply
o +2.7V to +5.5V Adjustable Logic Level
o Internal +4.096V Reference
o External Reference: 1V to V
AVDD
o Internal 4MHz Conversion Clock
o 58.6ksps Sampling Rate
o AutoShutdown Between Conversions
o Low Power
5.0mW at 58.6ksps
4.2mW at 50ksps
2.0mW at 10ksps
0.23mW at 1ksps
3µW in Shutdown
o Small 14-Pin TSSOP Package
Ordering Information
PART TEMP RANGE
PIN-
PACKAGE
INL
(LSB)
MAX1069AEUD+ -40°C to +85°C 14 TSSOP ±1
MAX1069BEUD+ -40°C to +85°C 14 TSSOP ±2
14
13
12
11
10
9
8
1
2
3
4
5
6
7
ADD3
REF
REFADJ
AGNDSADD2
SDA
SCL
DGND
TOP VIEW
MAX1069
AIN
AGND
AVDDDVDD
ADD0
ADD1
TSSOP
Pin Configuration
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
MAX1069
58.6ksps, 14-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
AVDD to AGND.........................................................-0.3V to +6V
DVDD to DGND ........................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
AGNDS to AGND...................................................-0.3V to +0.3V
AIN, REF, REFADJ to AGND ..................-0.3V to (V
AVDD
+ 0.3V)
SCL, SDA, ADD_ to DGND.......................................-0.3V to +6V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +85°C)
14-Pin TSSOP (derate 9.1mW/°C above +85°C) .........864mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(V
AVDD
= +4.75V to +5.25V, V
DVDD
= +2.7V to +5.5V, f
SCL
= 1.7MHz (33% duty cycle), f
SAMPLE
= 58.6ksps, V
REF
= +4.096V, external
reference applied to REF, REFADJ = AVDD, C
REF
= 10µF, 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
DC ACCURACY (Note 1)
Resolution 14 Bits
MAX1069A ±1
Relative Accuracy
(Note 2)
INL
MAX1069B ±2
LSB
MAX1069A, no missing codes ±1
Differential Nonlinearity DNL
MAX1069B, no missing codes ±1
LSB
Offset Error 2 5 mV
Offset-Error Temperature
Coefficient
1.0 ppm/°C
Gain Error (Note 3) ±0.25 ±0.5 %FSR
Gain Temperature Coefficient 0.1 ppm/°C
DYNAMIC PERFORMANCE (f
IN(sine wave)
= 1kHz, V
IN
= V
REF(P-P)
, f
SAMPLE
= 58.6ksps)
Signal-to-Noise Plus Distortion SINAD 81 84 dB
Total Harmonic Distortion THD Up to the 5th harmonic -99 -86 dB
Spurious-Free Dynamic Range SFDR 87 102 dB
Signal-to-Noise Ratio SNR 82 84 dB
Full-Power Bandwidth FPBW -3dB point 4 MHz
Full-Linear Bandwidth SINAD > 81dB 20 kHz
CONVERSION RATE (Figure 11)
Fast mode 7.1 7.5
Conversion Time
(SCL Stretched Low)
t
CONV
High-speed mode 5.8 6
µs
Fast mode 19
Throughput Rate (Note 4) f
SAMPLE
High-speed mode 58.6
ksps
Internal Clock Frequency f
CLK
4 MHz
Track/Hold Acquisition Time t
ACQ
(Note 5) 1100 ns
MAX1069
58.6ksps, 14-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= +4.75V to +5.25V, V
DVDD
= +2.7V to +5.5V, f
SCL
= 1.7MHz (33% duty cycle), f
SAMPLE
= 58.6ksps, V
REF
= +4.096V, external
reference applied to REF, REFADJ = AVDD, C
REF
= 10µF, 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
Fast mode 50
Aperture Delay
(Figure 11c) (Note 6)
t
AD
High-speed mode 30
ns
Fast mode 100
Aperture Jitter
(Figure 11c)
t
AJ
High-speed mode 100
ps
ANALOG INPUT (AIN)
Input Voltage Range V
AIN
0 V
REF
V
Input Leakage Current
On/off-leakage current, V
AIN
= 0V or V
AVDD
,
no clock, f
SCL
= 0Hz
±0.01 ±10 µA
Input Capacitance C
IN
35 pF
INTERNAL REFERENCE (Bypass REFADJ with 0.1µF to AGND and REF with 10µF to AGND)
REF Output Voltage V
REF
4.056 4.096 4.136 V
Reference Temperature
Coefficient
TC
REF
T
A
= -40°C to +85°C ±35 ppm/°C
Reference Short-Circuit Current I
REFSC
10 4.136 mA
REFADJ Output Voltage 4.056 4.096 4.000 V
REFADJ Input Range For small adjustments, from 4.096V ±60 mV
EXTERNAL REFERENCE (REFADJ = AV
DD
)
REFADJ Buffer Disable Voltage
Pull REFADJ high to disable the internal
bandgap reference and reference buffer
V
AVDD
- 0.1 V
REFADJ Buffer Enable Voltage V
AVDD
- 0.4 V
Reference Input Voltage Range
(Note 7) 1.0 V
AVDD
V
V
REF
= +4.096V, V
IN
= V
REF(P-P)
f
IN(sine wave)
= 1kHz, f
SAMPLE
= 62.1ksps
27
REF Input Current I
REF
V
REF
= +4.096V, shutdown 0.1
µA
DIGITAL INPUTS/OUTPUTS (SCL, SDA)
Input High Voltage V
IH
0.7 V
DVDD
V
Input Low Voltage V
IL
0.3 V
DVDD
V
Input Hysteresis V
HYST
0.1 V
DVDD
V
Input Current I
IN
±10 µA
Input Capacitance C
IN
15 pF
Output Low Voltage V
OL
I
SINK
= 3mA 0.4 V
ADDRESS SELECT INPUTS (ADD3, ADD2, ADD1, ADD0)
Input High Voltage 0.7 V
DVDD
V
Input Low Voltage 0.3 V
DVDD
V
Input Hysteresis 0.1 V
DVDD
V
Input Current ±10 µA
Input Capacitance 15 pF
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MAX1069AEUD+

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Buy MAX1069AEUD+
Manufacturer:
Maxim Integrated
Description:
Analog to Digital Converters - ADC 58.6ksps, 14-Bit, 2-Wire Serial ADC in a 14-Pin TSSOP
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