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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1007 Datasheet

Mobile-Radio Analog Controller

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MAX1007 pdf
19-1180; Rev 0; 6/98
Mobile-Radio Analog Controller
________________General Description
The MAX1007 is a multifunctional integrated circuit
designed for high-performance mobile radios. It
includes one 8-bit analog-to-digital converter (ADC),
and two 7-bit and two 6-bit digital-to-analog converters
(DACs) for functions including radio-frequency (RF)
power sensing and antenna-diversity selection.
The ADC provides for power sense, receive-signal
strength intensity (RSSI) measurements and system
supervision. In the power-sense mode, the ADC con-
verts the power-sensing circuitry signal (representing
either the transmitted (Tx) or received (Rx) RF power)
into a digital code, ensuring optimum Tx power setting
and Rx signal analysis. An additional direct input to the
ADC provides for system-supervision measurements,
such as power-supply voltages, battery voltage, and
temperature.
Four DAC blocks typically control DC levels in radios.
As part of the Maxim PWT1900 chip set, the two 7-bit
DACs control the gain settings and the two 6-bit DACs
control the varactor diodes to tune a TCXO and bias a
GaAs amplifier. Each DAC register and output can be
updated independently, providing maximum flexibility.
For antenna diversity, a magnitude-comparison circuit
captures and compares two peak signals. A latched
logic-comparator output reveals which signal has the
largest magnitude. The MAX1007 also includes an on-
board voltage reference for the ADC and DACs.
The MAX1007 offers a high level of signal integrity with
minimal power dissipation. Single-supply operation
ranges from +2.85V to +3.6V. To further save power, there
are two shutdown modes: standby and total shutdown.
Standby is a partial shutdown that keeps the bandgap
reference and the 2.4V reference generator active. Total
shutdown disables all circuit blocks except the serial
interface, reducing supply current to less than 1µA.
The MAX1007 is available in a 24-pin SSOP and is
specified for commercial and extended temperature
ranges.
________________________Applications
PWT1900
Wireless Communications:
Cellular Radios PMR/SMR
PCS Radios
WLL
____________________________Features
o Multi-Input 8-Bit ADC
o Two 7-Bit DACs with Buffered Outputs
o Two 6-Bit DACs: Buffered/Unbuffered
o Power-Sense Conditioning Circuitry
o RSSI Measurement
o Antenna-Diversity Circuitry
o Internal Reference
o Serial-Logic Interface
o +2.85V to +3.6V Single-Supply Operation
o Two Shutdown Modes
Ordering Information
PART
MAX1007CAG
MAX1007EAG
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
24 SSOP
24 SSOP
Pin Configuration appears at end of data sheet.
Functional Diagram
PSDWDW PSDCTRL
PREAMBLE-SWITCHED DIVERSITY
DUAL
T/H
D FLIP-FLOP
BANT
RSSI
PKWDW
ADC CTRL
RPS
FPS1
FPS2
SDAC
XDAC
GDAC
KDAC
REF
CH1
POWER
SENSE
PSOUT
ADC
CH0
POWER SENSE CIRCUITRY
SDAC 7
XDAC 6
MAX1007
GDAC 6
KDAC 7
CS
SCLK
DIN
DOUT
SDG
VREF
PSBIAS
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1007 Datasheet

Mobile-Radio Analog Controller

No Preview Available !

MAX1007 pdf
Mobile-Radio Analog Controller
ABSOLUTE MAXIMUM RATINGS
AVDD or DVDD to AGND or DGND ...........................-0.3V to +6V
Digital Inputs to DGND.............................................-0.3V to +6V
Analog Inputs to AGND............................................-0.3V to +6V
REF to AGND............................................................-0.3V to +6V
AGND to DGND .................................................................± 0.3V
AVDD to DVDD....................................................................± 0.3V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (TA = +70°C)
SSOP (derate 8.0mW/°C above +70°C) ......................640mW
Operating Temperature Ranges
MAX1007CAG.....................................................0°C to +70°C
MAX1007EAG ..................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+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
(AVDD = DVDD = +2.85V to +3.6V, fSCLK = 1.152MHz, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
POWER-SUPPLY REQUIREMENTS
Supply Voltages
AVDD, DVDD
SUPPLY CURRENTS [I(AVDD) + I(DVDD)] (Note 1)
CONDITIONS
MIN TYP MAX UNITS
2.85 3.0
3.6
V
Transmit Mode 1:
All DACs, Ref, RefBuf Active
RxEN = 0, TxEN = 1; AVDD = DVDD = 3V;
PKWDW = ADCCTRL = DGND
1.8 5.0 mA
Transmit Mode 2:
All DACs, PGA, REF, Peak
Detector, PSBIAS, ISOURCE,
RefBuf Active
Transmit Mode 3:
All DACs, PGA, REF, Peak
Detector, PSBIAS, ISOURCE,
RefBuf, ADC Active
RxEN = 0, TxEN = 1; AVDD = DVDD = 3V;
PKWDW and ADCCTRL as per state B on Figure 1
RxEN = 0, TxEN = 1; AVDD = DVDD = 3V;
PKWDW and ADCCTRL as per state C on Figure 1
4.7 mA
12.2 32
mA
Receive Mode 1:
KDAC, XDAC, Ref, RefBuf
Active
RxEN = 1, TxEN = 0; AVDD = DVDD = 3V;
PKWDW = ADCCTRL = DGND
1.24 3.5
mA
Receive Mode 2:
KDAC, XDAC, Peak Detector,
RSSI Buffer, Ref, RefBuf Active
RxEN = 1, TxEN = 0; AVDD = DVDD = 3V; PKWDW and
ADCCTRL as per state B on Figure 1
2.95 mA
Receive Mode 3:
KDAC, XDAC, ADC, Peak
Detector RSSI Buffer, Ref,
RefBuf Active
RxEN = 1, TxEN = 0; AVDD = DVDD = 3V; PKWDW and
ADCCTRL as per state C on Figure 1
11.2 31
mA
Receive Mode 4:
KDAC, XDAC, ADC, RSSI
Buffer, Ref, RefBuf, PSD
Circuit Active
RxEN = 1, TxEN = 0; AVDD = DVDD = 3V; PKWDW and
ADCCTRL as per state B on Figure 1. PSDWDW and PSD-
CNTRL as per state D on Figure 2
4.07 10.5 mA
Standby:
XDAC, GDAC, Ref, RefBuf Active
RxEN = 1, TxEN = 1; AVDD = DVDD = 3V
1.24 3.5
mA
Total Shutdown
RxEN = 0, TxEN = 0; AVDD = DVDD = 3V;
ADCCTRL = PSDCTRL = PKWDW = PSDWDW = DGND;
SCLK not active, either high or low
1 10 µA
2 _______________________________________________________________________________________


Part Number MAX1007
Description Mobile-Radio Analog Controller
Maker Maxim
Total Page 12 Pages
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