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PDF MAX1329 Data sheet ( Hoja de datos )
| Número de pieza | MAX1329 | |
| Descripción | (MAX1329 / MAX1330) 12-/16-Bit DASs | |
| Fabricantes | Maxim Integrated Products | |
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19-4252; Rev 1; 10/08
www.DataSheet4U.com
12-/16-Bit DASs 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, the
ADC 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 differential
input 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. The
PGA 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 supply
voltage 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 to
communicate 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 analog
switches, 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 with
a 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 Operation
♦ Internal 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
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX1329BETL+
-40°C to +85°C 40 Thin QFN-EP**
MAX1330BETL+*
-40°C to +85°C 40 Thin QFN-EP**
*Future product—contact factory for availability.
**EP = Exposed pad.
+Denotes a lead-free/RoHS-compliant package.
Pin Configurations appear at end of data sheet.
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.
1 page  
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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 = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
EXTERNAL REFERENCE AT REFADC
External Reference Input Voltage
Range
REFADC Input Resistance
REFADC Input Current
Turn-On Time
Shutdown REFADC Input Current
Minimum Capacitive Bypass
EXTERNAL REFERENCE AT REFDAC
REFDAC Input Voltage Range
REFDAC Input Resistance
REFDAC Input Current
Turn-On Time
Shutdown REFDAC Input Current
Minimum Capacitive Bypass
MULTIPLEXER
Absolute Input Voltage Range
Absolute Input Leakage Current
Input Capacitance
On Resistance
INTERNAL TEMPERATURE SENSOR
Internal Sensor Measurement
Error (Note 5)
External Sensor Measurement
Error (Note 5)
CONDITIONS
VREFADC = 2.5V, 300ksps
REFADC buffer, CREFADC = 1µF
REFADC to AGND
MAX1329
MAX1330
MAX1329, VREFDAC = 2.5V
MAX1330, VREFDAC = 2.5V
REFDAC buffer
REFDAC to AGND
(AGND + 100mV) < VAIN_ < (AVDD - 100mV)
(Note 2)
ADC gain = 1, 2
ADC gain = 4, 8
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = 0°C to +70°C
TA = -40°C to +85°C
MIN
AGND
50
10
AGND
64
128
10
AGND
TYP
75
30
75
0.01
90
180
28
14
75
0.1
±0.01
24
48
340
±0.25
±0.4
±2
±3
MAX
AVDD
40
1.0
AVDD
180
360
86
43
1
AVDD
±1
±3
UNITS
V
kΩ
µA
µs
µA
µF
V
kΩ
µA
µs
µA
µF
V
nA
pF
Ω
°C
°C
_______________________________________________________________________________________ 5
5 Page 
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12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
TIMING CHARACTERISTICS (continued)
(DVDD = 1.8V to 3.6V, AVDD = 2.7V to 5.5V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
SCLK to APIO3 Propagation
Delay
DIN to APIO2 Propagation Delay
APIO1 to DOUT Propagation
Delay
tDSA
tDDA
tDAD
AP3MD<1:0> = 11, CS is high
AP2MD<1:0> = 11, CS is high
AP1MD<1:0> = 11, CS is high
30 ns
25 ns
20 ns
SPI-Mode Propagation Delay
Matching
tDM Among APIO4, APIO3, APIO2, and APIO1
±10 ns
ANALOG PROGRAMMABLE I/O TIMING PARAMETERS (APIO1–APIO4, DVDD = 1.8V to 3.6V, AVDD = 2.7V to 5.5V, CL = 20pF)
SPI Write to APIO Output Valid
tSD From last SCLK rising edge
100 ns
APIO Rise/Fall Input to Interrupt
Asserted Delay
tDI
Interrupt programmed on RST1 and/or
RST2, corresponding status bits unmasked
175 ns
CS to APIO4 Propagation Delay
tDCA
AP4MD<1:0> = 11
60 ns
SCLK to APIO3 Propagation
Delay
DIN to APIO2 Propagation Delay
tDSA
tDDA
AP3MD<1:0> = 11, CS is high
AP2MD<1:0> = 11, CS is high
50 ns
50 ns
APIO1 to DOUT Propagation
Delay
tDAD
AP1MD<1:0> = 11, CS is high
80 ns
SPI-Mode Propagation Delay
Matching
tDM Among APIO4, APIO3, APIO2, and APIO1
±30 ns
Note 1: ADC INL and DNL, offset, and gain are tested at DVDD = 1.8V, AVDD = 2.7V, fSAMPLE = 234ksps to guarantee performance
at fSAMPLE = 312ksps, DVDD ≥ 2.7V and AVDD ≥ 5.0V.
Note 2: Guaranteed by design. Not production tested.
Note 3: AVDD supply current contribution for this module.
Note 4: DNL and INL are measured between code 115 and 4095.
Note 5: Temperature sensor accuracy is tested using a 2.5084V reference applied to REFADJ.
Note 6: The maximum trip levels for the AVDD monitor are 5% below the typical charge-pump output value. The charge-pump output
voltage and the trip thresholds track to prevent tripping at -5% below the typical charge-pump output value.
Note 7: DVDD supply current contribution for this module.
Note 8: The normal operation and sleep mode supply currents are measured with no load on DOUT, SCLK idle, and all digital inputs
at DGND or DVDD. CLKIO runs in normal mode operation and idle in sleep mode.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX1329.PDF ] | |
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