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MAX1329BETL+ |MAX1329BETLMAXIMN/a2avai12-/16-Bit DAS with ADC, DACs, DPIOs, APIOs, Reference, Voltage Monitors, and Temp Sensor


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MAX1329BETL+
12-/16-Bit DAS with ADC, DACs, DPIOs, APIOs, Reference, Voltage Monitors, and Temp Sensor
General Description
The MAX1329/MAX1330 are smart data acquisition sys-
tems (DASs) based on a successive approximation
register (SAR) analog-to-digital converter (ADC). These
devices are highly integrated, offering an ADC, digital-to-analog converters (DACs), operational amplifiers (op
amps), voltage reference, temperature sensors, and
analog switches in the same device.
The MAX1329/MAX1330 offer a single ADC with a refer-
ence buffer. The ADC is capable of operating in one of
two user-programmable modes. In normal mode, theADC provides up to 12 bits of resolution at 312ksps. In
DSP mode, the ADC provides up to 16 bits of resolution
at 1000sps. The ADC accepts one external differentialinput or two external single-ended inputs as well as
inputs from other circuitry on-board. An on-chip pro-
grammable gain amplifier (PGA) follows the analog
inputs, reducing external circuitry requirements. ThePGA gain is adjustable from 1V/V to 8V/V.
The MAX1329/MAX1330 operate from a 1.8V to 3.6V dig-ital power supply. Shutdown and sleep modes are avail-
able for power-saving applications. Under normal
operation, an internal charge pump boosts the supplyvoltage for the analog circuitry when the supply is < 2.7V.
The MAX1329/MAX1330 offer four analog programmable
I/Os (APIOs) and four digital programmable I/Os(DPIOs). The APIOs can be configured as general-pur-
pose logic inputs and outputs, as a wake-up function, or
as a buffer and level shifter for the serial interface tocommunicate with slave devices powered by the analog
supply, AVDD. The DPIOs can be configured as general-
purpose logic inputs and outputs as well as inputs to
directly control the ADC conversion rate, the analogswitches, the loading of the DACs, wake-up, sleep, and
shutdown modes, and as an interrupt for when the ana-
log-to-digital conversion is complete.
The MAX1329 includes dual 12-bit force-sense DACs
with a programmable reference buffer and one op amp.
The MAX1330 provides one 12-bit force-sense DAC witha programmable reference buffer and two op amps. For
the MAX1329/MAX1330, a 16-word DAC FIFO can be
used with the DACA for direct digital synthesis (DDS)of waveforms.
The 4-wire serial interface is compatible with SPI™,
QSPI™, and MICROWIRE™.
Applications

Battery-Powered and Portable Devices
Electrochemical and Optical Sensors
Medical Instruments
Industrial Control
Data Acquisition Systems
Low-Cost CODECs
Features
1.8V to 3.6V Single Digital Supply OperationInternal Charge Pump for Analog Circuits (2.7V to
5.5V)
12-Bit SAR ADC
12 Bits, 312ksps, No Missing Codes
16 Bits, 1000sps, DSP Mode
16-Word FIFO and 20-Bit Accumulator
PGA with Gains of 1, 2, 4, and 8
Unipolar and Bipolar Modes
16-Input Differential Multiplexer
Dual 12-Bit Force-Sense DACs
16-Word FIFO (DACA Only)
Independent Voltage References for ADC and DACs
Internal 2.5V Reference
Adjustable Reference Buffers Provide 1.25V,
2.048V, or 2.5V
System Support
ADC Alarm Register
Uncommitted Op Amps
Dual SPDT Analog Switches
Internal/External Temperature Sensor
Internal Oscillator with Clock I/O
Digital Programmable I/O
Analog Programmable I/O
Programmable Interrupts
Accurate Supply Voltage Measurement
Programmable Dual Voltage Monitors
SPI-/QSPI-/MICROWIRE-Compatible, 4-Wire Serial
Interface
Space-Saving, 6mm x 6mm, 40-Pin Thin QFN
Package
MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor

19-4252; Rev 1; 10/08
Ordering Information
PARTTEMP RANGEPIN-PACKAGEA X1 3 2 9
BE TL+ -40°C to +85°C40 Thin QFN-EP**A X1 3 3 0 BE TL+ *-40°C to +85°C40 Thin QFN-EP**
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
*Future product—contact factory for availability.
**EP = Exposed pad.
+Denotes a lead-free/RoHS-compliant package.
Pin Configurations appear at end of data sheet.
MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
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.
AVDDto AGND.........................................................-0.3V to +6V
DVDDto DGND.........................................................-0.3V to +6V
Analog Inputs to AGND....................................-0.3V to the lower
of (AVDD+ 0.3V) or +6V
Digital Inputs to DGND.....................................-0.3V to the lower
of (DVDD+ 0.3V) or +6V
Analog Outputs to AGND.................................-0.3V to the lower
of (AVDD+ 0.3V) or +6V
Digital Outputs to DGND..................................-0.3V to the lower
of (DVDD+ 0.3V) or 6V
AGND to DGND....................................................-0.3V to +0.3V
Continuous Current into Any Pin.......................................±50mA
Continuous Power Dissipation (TA= +70°C)
40-Pin Thin QFN (derate 37mW/°C above +70°C)....2963mW
Operation 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

(DVDD= 1.8V to 3.6V, AVDD= 2.7V to 5.5V, VREFDAC= VREFADC= 2.5V, external reference; 10µF capacitor at REFADC and REFDAC;
0.01µF capacitor at REFADJ; TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
ADC

ResolutionNo missing codes12Bits
DSP-Mode Resolution256 oversampling, dither enabled16Bits
Integral NonlinearityINLNormal mode (Note 1)±1LSB12
Differential NonlinearityDNLNormal mode (Note 1)±1LSB12
Offset Error(Note 1)±4mV
Offset Drift±1.5µV/°C
Gain = 1±0.1
Gain = 2, 4±1.5Gain Error (Excluding Reference)
(Note 1)
Gain = 8±2.5
% FS
Gain Temperature CoefficientExcluding reference±0.8ppm/°C
Unipolar mode, gain = 1, 2, 4, 80+ V R E F AD C /
GainVoltage Range
Bipolar mode, gain = 1, 2, 4, 8-VREFADC/
(2 x Gain)V R E F AD C /
(2 x Gain)
Absolute Input Voltage RangeAGNDAVDDV
Input Leakage Current into
Analog Inputs(Note 2)±0.5±1nA
Gain = 1, 224Input CapacitanceGain = 4, 848pF
Gain = 1, 20.6Acquisition TimetACQGain = 4, 81.2µs
Conversion TimetCONV12 clocks2.4µs
Conversion Clock Frequency0.15.0MHz
Normal operation mode,
ADC converting at 234ksps325
ADC Supply Current (Note 3)Fast power-down mode,
ADC converting at 234ksps210
Aperture DelaytAD30ns
MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
ELECTRICAL CHARACTERISTICS (continued)

(DVDD= 1.8V to 3.6V, AVDD= 2.7V to 5.5V, VREFDAC= VREFADC= 2.5V, external reference; 10µF capacitor at REFADC and REFDAC;
0.01µF capacitor at REFADJ; TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Aperture JittertAJ50ps
Gain = 1, 2; DVDD ≥ 2.7V, AVDD ≥ 5.0V312
Gain = 4, 8; DVDD ≥ 2.7V, AVDD ≥ 5.0V263
Gain = 1, 2234Sample Rate
Gain = 4, 8200
ksps
Power-Supply RejectionPSRAVDD = 2.7V to 5.5V, full-scale input±0.06±0.5mV/V
Turn-On TimeSupply and reference have settled1µs
ADC DYNAMIC ACCURACY (10kHz sine wave, VIN = 2.5VP-P, fSAMPLE = 234ksps, gain = 1)

Signal-to-Noise Plus DistortionSINAD71dB
Total Harmonic DistortionTHDUp to the 5th harmonic82dB
Spurious-Free Dynamic RangeSFDR84dB
Channel-to-Channel Crosstalk100dB
Full-Power BandwidthFPBW-3dB point4MHz
DAC (RL = 5kΩ, CL = 200pF, tested in unity gain, unless otherwise noted)

Resolution12Bits
Differential NonlinearityDNLGuaranteed monotonic (Note 4)±1.0LSB
Integral NonlinearityINL(Note 4)±1±8LSB
Offset ErrorCode = 0x000 (tested at 0x032)±2.5±30mV
Offset-Error Temperature
CoefficientDue to amplifier±7µV/°C
Gain ErrorCode = 0xFFF0±5% FS
Gain-Error Temperature
CoefficientExcluding reference drift±7ppm/°C
Output Voltage RangeNo loadAGNDAVDDV
Output Slew RateCL = 200pF0.5V/µs
Output Settling TimeCode = 0x400 to 0xC00 (Note 2)410µs
FB_ Input Bias Current(Note 2)±0.11nA
FB_ Switch Resistance200Ω
FB_ Switch Turn-On/-Off Time40ns
FB_ Switch Off Isolationf = 10kHz100dB
FB_ Switch Charge Injection1pC
DAC-to-DAC Crosstalk0.5nV-s
Sink13Short-Circuit CurrentSource50mA
DC Output ImpedanceCode = 0x8000.8Ω
Power-Up Time0.5 LSB settling to 0x8005µs
Power-Supply RejectionPSRAVDD = 2.7V to 5.5V±1mV/V
Charge-Pump Output
Feedthrough
Code = 0x800, buffer on, RL = 5kΩ,
CL = 200pF100µVRMS
MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
ELECTRICAL CHARACTERISTICS (continued)

(DVDD= 1.8V to 3.6V, AVDD= 2.7V to 5.5V, VREFDAC= VREFADC= 2.5V, external reference; 10µF capacitor at REFADC and REFDAC;
0.01µF capacitor at REFADJ; TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Power-Down Output Leakage
Current±100nA
Supply Current per DACNo load (Note 3)70µA
INTERNAL REFERENCE (10µF capacitor at REFADC and REFDAC, 0.01µF capacitor at REFADJ)

TA = + 25° C , ARE F< 1:0> = D RE F< 1:0> = 011.2251.2501.275
TA = + 25° C , ARE F< 1:0> = D RE F< 1:0> = 102.0072.0482.089Output Voltage at REFADC and
REFDAC
TA = + 25° C , ARE F< 1:0> = D RE F< 1:0> = 112.4502.5002.550
Output-Voltage Temperature(Note 2)±10±75ppm/°C
Source40REFADC and REFDAC
Output Short-Circuit CurrentSink13mA
REFADC and REFDAC
Line Regulation±100±600µV/V
ISOURCE = 0µA to 500µA, TA = +25°C10Load RegulationISINK = 0µA to 80µA, TA = +25°C10µV/µA
Long-Term StabilityTA = +25°C±100ppm/
1000hrs
Turn-On TimeAt REFADJ2ms
Turn-Off Time100ns
Internal reference445
REFADC buffer270Refer ence S up p l y C ur r ent ( N ote 3)
REFDAC buffer270
EXTERNAL REFERENCE AT REFADJ

AREF<1:0> = DREF<1:0> = 111.225VAVDD
- 0.1V
AREF<1:0> = DREF<1:0> = 101.496V to
AVDD - 0.1V
External Reference Input Voltage
Range
AREF<1:0> = DREF<1:0> = 012.450V to
AVDD - 0.1V
Input Resistance5075kΩ
AREF<1:0> = 011
AREF<1:0> = 100.8192REFADC Buffer Gain
AREF<1:0> = 110.5
V/V
DREF<1:0> = 011
DREF<1:0> = 100.8192REFDAC Buffer Gain
DREF<1:0> = 110.5
V/V
Minimum Capacitive BypassREFADJ to AGND10nF
MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
ELECTRICAL CHARACTERISTICS (continued)

(DVDD= 1.8V to 3.6V, AVDD= 2.7V to 5.5V, VREFDAC= VREFADC= 2.5V, external reference; 10µF capacitor at REFADC and REFDAC;
0.01µF capacitor at REFADJ; TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
EXTERNAL REFERENCE AT REFADC

External Reference Input Voltage
RangeAGNDAVDDV
REFADC Input Resistance5075kΩ
REFADC Input CurrentVREFADC = 2.5V, 300ksps3040µA
Turn-On TimeREFADC buffer, CREFADC = 1µF75µs
Shutdown REFADC Input Current0.011.0µA
Minimum Capacitive BypassREFADC to AGND10µF
EXTERNAL REFERENCE AT REFDAC

REFDAC Input Voltage RangeAGNDAVDDV
MAX13296490180REFDAC Input ResistanceMAX1330128180360kΩ
MAX1329, VREFDAC = 2.5V2886REFDAC Input CurrentMAX1330, VREFDAC = 2.5V1443µA
Turn-On TimeREFDAC buffer75µs
Shutdown REFDAC Input Current0.11µA
Minimum Capacitive BypassREFDAC to AGND10µF
MULTIPLEXER

Absolute Input Voltage RangeAGNDAVDDV
Absolute Input Leakage Current( AG N D + 100m V ) < V A IN _ < ( AV D D - 100m V ) N ote 2) ±0.01±1nA
ADC gain = 1, 224Input CapacitanceADC gain = 4, 848pF
On Resistance340Ω
INTERNAL TEMPERATURE SENSOR

TA = +25°C±0.25Internal Sensor Measurement
Error ( N ote 5) TA = -40°C to +85°C±3°C
TA = +25°C±0.4
TA = 0°C to +70°C±2External Sensor Measurement
Error ( N ote 5)
TA = -40°C to +85°C±3
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