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.
____________________________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
MAX1007
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
REF
RSSI
PKWDW
ADC CTRL
RPS
FPS1
FPS2
CH1
PEAK
DETECTOR
POWER
SENSE
PSOUT
ADC
SERIAL
INTERFACE
CH0
CS
SCLK
DIN
DOUT
SDG
________________________Applications
PWT1900
Wireless Communications:
Cellular Radios
PCS Radios
PMR/SMR
WLL
SDAC
XDAC
GDAC
POWER SENSE CIRCUITRY
SDAC
XDAC
GDAC
7
6
6
MAX1007
REFERENCE
VREF
KDAC
KDAC
7
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.
Mobile-Radio Analog Controller
MAX1007
ABSOLUTE MAXIMUM RATINGS
AV
DD
or DV
DD
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
AV
DD
to DV
DD
....................................................................± 0.3V
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +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
(AV
DD
= DV
DD
= +2.85V to +3.6V, f
SCLK
= 1.152MHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
POWER-SUPPLY REQUIREMENTS
Supply Voltages
AV
DD
, DV
DD
RxEN = 0, TxEN = 1; AV
DD
= DV
DD
= 3V;
PKWDW = ADCCTRL = DGND
RxEN = 0, TxEN = 1; AV
DD
= DV
DD
= 3V;
PKWDW and ADCCTRL as per state B on Figure 1
2.85
3.0
3.6
V
SUPPLY CURRENTS
[I(AV
DD
) + I(DV
DD
)] (Note 1)
CONDITIONS
MIN
TYP
MAX
UNITS
Transmit Mode 1:
All DACs, Ref, RefBuf Active
Transmit Mode 2:
All DACs, PGA, REF, Peak
Detector, PSBIAS, I
SOURCE
,
RefBuf Active
Transmit Mode 3:
All DACs, PGA, REF, Peak
Detector, PSBIAS, I
SOURCE
,
RefBuf, ADC Active
Receive Mode 1:
KDAC, XDAC, Ref, RefBuf
Active
Receive Mode 2:
KDAC, XDAC, Peak Detector,
RSSI Buffer, Ref, RefBuf Active
Receive Mode 3:
KDAC, XDAC, ADC, Peak
Detector RSSI Buffer, Ref,
RefBuf Active
Receive Mode 4:
KDAC, XDAC, ADC, RSSI
Buffer, Ref, RefBuf, PSD
Circuit Active
Standby:
XDAC, GDAC, Ref, RefBuf Active
Total Shutdown
1.8
5.0
mA
4.7
mA
RxEN = 0, TxEN = 1; AV
DD
= DV
DD
= 3V;
PKWDW and ADCCTRL as per state C on Figure 1
12.2
32
mA
RxEN = 1, TxEN = 0; AV
DD
= DV
DD
= 3V;
PKWDW = ADCCTRL = DGND
RxEN = 1, TxEN = 0; AV
DD
= DV
DD
= 3V; PKWDW and
ADCCTRL as per state B on Figure 1
1.24
3.5
mA
2.95
mA
RxEN = 1, TxEN = 0; AV
DD
= DV
DD
= 3V; PKWDW and
ADCCTRL as per state C on Figure 1
11.2
31
mA
RxEN = 1, TxEN = 0; AV
DD
= DV
DD
= 3V; PKWDW and
ADCCTRL as per state B on Figure 1. PSDWDW and PSD-
CNTRL as per state D on Figure 2
RxEN = 1, TxEN = 1; AV
DD
= DV
DD
= 3V
RxEN = 0, TxEN = 0; AV
DD
= DV
DD
= 3V;
ADCCTRL = PSDCTRL = PKWDW = PSDWDW = DGND;
SCLK not active, either high or low
4.07
10.5
mA
1.24
3.5
mA
1
10
µA
2
_______________________________________________________________________________________
Mobile-Radio Analog Controller
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +2.85V to +3.6V, f
SCLK
= 1.152MHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
XDAC
Resolution
Differential Nonlinearity
Integral Nonlinearity
Offset Error
Gain Error
Full-Scale Output Swing
Output Resistance
GDAC
Resolution
Differential Nonlinearity
Integral Nonlinearity
Offset Error
Gain Error
Output Slew Rate
Full-Scale Output Swing
Full-Scale Step Response Time
SDAC, KDAC
Resolution
Differential Nonlinearity
Integral Nonlinearity
Offset Error
Gain Error
Output Slew Rate
Full-Scale Output Swing
Full-Scale Step Response Time
Power-Up Time from Standby
ADC
Resolution
Input Signal Range
Differential Nonlinearity
Integral Nonlinearity
Conversion Time
Offset Error
Gain Error
Reference Voltage
ADC Power-Up Time from Standby
1.74
With respect to V
REF
±2
±5
1.028
V
REF
= 1.028V (typ)
V
REF
= 1.028V (typ)
±1
5.2
8
0
V
REF
±1
Bits
V
LSB
LSB
µs
LSB
LSB
V
µs
(Note 2)
C
L
= 30pF, R
L
= 40kΩ
R
L
= 40kΩ
C
L
= 30pF, R
L
= 40kΩ, settling to 2% of final value
C
L
= 30pF, R
L
= 40kΩ, settling to within 2% of final value
2.1
2 < code
≤
FS
2 < code
≤
FS
±1
±1
±10
0.1
2.42
4
4
2.75
7
±1
Bits
LSB
LSB
LSB
%FSR
V/µs
V
µs
µs
R
L
= 40kΩ
C
L
= 30pF, R
L
= 40kΩ, settling to 5% of final value
2.1
2 < code
≤
FS
2 < code
≤
FS
C
L
= 30pF, R
L
= 40kΩ
(Note 2)
±1
±1
±10
0.1
2.42
4
2.75
6
±1
Bits
LSB
LSB
LSB
%FSR
V/µs
V
µs
(Note 2)
No resistive load
2.1
2 < code
≤
FS
2 < code
≤
FS
±1/2
±1
±10
2.42
30
2.75
6
±1
Bits
LSB
LSB
LSB
%FSR
V
kΩ
CONDITIONS
MIN
TYP
MAX
UNITS
MAX1007
3
_______________________________________________________________________________________
Mobile-Radio Analog Controller
MAX1007
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +2.85V to +3.6V, f
SCLK
= 1.152MHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
RSSI CIRCUIT
Lowpass-Filter Time Constant
Minimum Peak Level Detected
Maximum Peak Level Detected
TRANSMIT POWER SENSE
Offset Voltage
Power-Sense Amp Gain (PGA)
Current Source
Pull-Down Input Resistance
REFERENCE
Output Voltage
PS Bias Voltage Output
PS Bias Sink Current
Internal DAC Reference
SERIAL-LOGIC INTERFACE
Digital Inputs (CS, SCLK, DIN, PKWDW, ADCCTRL, PSDWDW, PSDCTRL)
Input Voltage High
Input Voltage Low
Input Current
Input Resistance
Inpt Capacitance
Output Voltage High
Output Voltage Low
DIN Valid to SCLK Setup
DIN to SCLK Hold
CS
Low to SCLK High
CS
Low to DOUT Valid
SCLK High to DOUT Valid
SCLK Pulse Width High
SCLK Pulse Width Low
CS
High to DOUT Disable
ADC Data Output Delay After
End of ADC Conversion
(Figure 4b)
V
IH
V
IL
I
IN
R
IN
C
IN
V
OH
V
OL
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
8
t
9
C
L
= 20pF
500
200
200
434
434
100
Excluding PSDCTRL, PSDWDW
PSDCTRL, PSDWDW
Digital inputs
C
L
= 20pF, R
L
= 100kΩ
C
L
= 20pF, R
L
= 100kΩ
100
0
20
100
150
V
DD
- 0.4
0.4
20
10
0.7V
DD
0.3V
DD
±1
V
V
µA
kΩ
pF
V
V
ns
ns
ns
ns
ns
ns
ns
ns
ns
R
S
in series with C
L
, C
L
= 1nF, 200Ω
≤
R
S
≤
1kΩ
R
S
in series with C
L
, C
L
= 1nF, 200Ω
≤
R
S
≤
1kΩ
200
2.42
0.96
1.028
1.87
1.1
V
V
µA
V
RPS, FPS1, FPS2 to ADC input
Forward transmit
Reflected transmit, class 1
Reflected transmit, classes 2, 3, 4
Figure 3b
RPS, FPS1, FPS2 pulled to AGND when not
selected
50
150
-0.53
-6
-0.44
100
200
180
µA
Ω
V/V
mV
10
20
100
V
REF
300
µs
mV
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Digital Outputs (DOUT, BANT,
SDG)
TIMING SPECIFICATIONS (Figure 4)
4
_______________________________________________________________________________________
Mobile-Radio Analog Controller
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +2.85V to +3.6V, f
SCLK
= 1.152MHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
ADCCTRL Low to RF input
PSDWDW Low to BANT Valid
SCLK Duty Cycle
Note 1:
All digital inputs at DV
DD
or DGND.
Note 2:
All DACs use an internal reference voltage of 2.42V.
SYMBOL
t
10
t
11
CONDITIONS
RF input on RSSI, RPS, FPS1, FPS2, or
PSBIAS, (Figure 4c)
C
L
= 20pF (Figure 4c)
MIN
TYP
200
100
50
MAX
UNITS
ns
ns
%
MAX1007
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
(Tx MODE)
MAX1007-02
MAX1007-01
DIFFERENTIAL NONLINEARITY
0.5
0.4
0.3
SUPPLY CURRENT (mA)
0.2
DNL (LSBs)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
50
100
150
CODES
200
250
300
1.25
1.55
1.50
SUPPLY CURRENT vs. TEMPERATURE
(Rx MODE)
MAX1007-03
2.40
2.30
SUPPLY CURRENT (mA)
2.20
2.10
2.00
1.90
1.80
V
DD
= 2.85V
V
DD
= 3.6V
V
DD
= 3.6V
1.45
1.40
1.35
1.30
V
DD
= 2.85V
-40
25
TEMPERATURE (°C)
85
-40
25
TEMPERATURE (°C)
85
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1007-04
PS BIAS VOLTAGE vs. TEMPERATURE
V
DD
= 3.6V
1.84
PS BIAS VOLTAGE (V)
V
DD
= 2.85V
1.82
MAX1007-05
1.025
1.024
REFERENCE VOLTAGE (V)
1.023
1.022
V
DD
= 2.85V
1.021
1.020
1.019
-40
-5
25
55
85
TEMPERATURE (°C)
V
DD
= 3.6V
1.86
1.80
1.78
1.76
-40
-5
25
55
85
TEMPERATURE (°C)
_______________________________________________________________________________________
5
能源基础设施
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
