MAXIM MAX2510 Technical data
________________General Description
The MAX2510 is a highly integrated IF transceiver for
digital wireless applications. It operates from a +2.7V to
+5.5V supply voltage and features four operating
modes for advanced system power management.
Supply current is reduced to 0.2µA in shutdown mode.
In a typical application, the receiver downconverts a
high IF/RF (up to 600MHz) to a low IF (up to 30MHz)
using a double-balanced mixer. Additional functions
included in the receiver section are an IF buffer that
can drive an off-chip filter, an on-chip limiting amplifier
offering 90dB of received-signal-strength indication
(RSSI), and a robust differential limiter output driver
designed to directly drive a CMOS input. The transmitter section upconverts I and Q baseband signals to an
IF in the 100MHz to 600MHz range using a quadrature
modulator. The transmit output is easily matched to
drive a SAW filter with an adjustable output from 0dBm
to -40dBm and excellent linearity.
The MAX2511 has features similar to the MAX2510, but
upconverts a low IF with an image-reject mixer. The
MAX2511 downconverter also offers image rejection
with a limiter/RSSI stage similar to that of the MAX2510.
________________________Applications
PWT1900, Wireless Handsets, and Base Stations
PACS, PHS, DECT, and Other PCS Wireless
Handsets and Base Stations
400MHz ISM Transceivers
IF Transceivers
Wireless Data Links
____________________________Features
♦ +2.7V to +5.5V Single-Supply Operation
♦ Complete Receive Path: 600MHz (max) 1st IF to
30MHz (max) 2nd IF
♦ Unique, Wide-Dynamic-Range Downconverter
Mixer Offers -8dBm IIP3, 11dB NF
♦ 90dB Dynamic-Range Limiter with High-Accuracy
RSSI Function
♦ Differential Limiter Output Directly Drives
CMOS Input
♦ 100MHz to 600MHz Transmit Quadrature
Modulator with 41dB Sideband Suppression
♦ 40dB Transmit Gain-Control Range; Up to +1dBm
Output Power
♦ Advanced Power Management (four modes)
♦ 0.2µA Shutdown Supply Current
MAX2510
Low-Voltage IF Transceiver with
Limiter/RSSI and Quadrature Modulator
________________________________________________________________ Maxim Integrated Products 1
___________________Pin Configuration
19-1296; Rev 2; 1/01
PART
MAX2510EEI -40°C to +85°C
TEMP. RANGE PIN-PACKAGE
28 QSOP
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
_______________Ordering Information
Typical Operating Circuit appears on last page.
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
TOP VIEW
LIMIN
RSSI
GND
V
GND
TXEN
RXEN
LIMOUT
LIMOUT
1
2
CZ
3
CZ
4
5
GC
LO
CC
LO
MAX2510
6
7
8
9
10
11
12
13
14
QSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VREF
MIXOUT
GND
RXIN
TXOUT
TXOUT
RXIN
V
CC
GND
V
CC
Q
Q
I
I
MAX2510
Low-Voltage IF Transceiver with
Limiter/RSSI and Quadrature Modulator
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC= +2.7V to +5.5V; 0.01µF across CZ and CZ; LO, LO open; MIXOUT tied to VREF through a 165Ω resistor; GC = 0.5V; RXIN,
RXIN open; LIMIN tied through 50Ω to VREF; LIMOUT, LIMOUT = open; RXEN, TXEN = high; bias voltage at I, I, Q, Q = 1.4V;
T
A
= -40°C to +85°C; unless otherwise noted. Typical values are at TA= +25°C.)
AC ELECTRICAL CHARACTERISTICS
(MAX2510 test fixture; VCC= +3.0V; RXEN = TXEN = low; 0.01µF across CZ and CZ; MIXOUT tied to VREF through 165Ω resistor;
TXOUT and TXOUT loaded with 100Ω differential; LO terminated with 50Ω, LO AC grounded; GC open; LIMOUT, LIMOUT are AC
coupled to 250Ω load; 330pF at RSSI pin; 0.1µF connected from VREF pin to GND; P
RXIN, RXIN
= -30dBm differentially driven (input
matched); f
RXIN, RXIN
= 240MHz; bias voltage at I, I, Q, Q = 1.4V; V
I,Q
= 500mVp-p; f
I,Q
= 200kHz; f
LO, LO
= 230MHz; P
LO
= -13dBm;
T
A
= +25°C; unless otherwise noted.)
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.
VCCto GND .............................................................-0.3V to 8.0V
V
CC
to Any Other VCC........................................................±0.3V
I, I, Q, Q to GND.........................................-0.3V to (V
CC
+ 0.3V)
I to I, Q to Q Differential Voltage............................................±2V
RXIN to RXIN Differential Voltage..........................................±2V
LOIN to LOIN Differential Voltage..........................................±2V
LIMIN Voltage .............................(VREF - 1.3V) to (VREF + 1.3V)
RXEN, TXEN, GC Voltage...........................-0.3V to (V
CC
+ 0.3V)
RXEN, TXEN, GC Input Current ............................................1mA
RSSI Voltage...............................................-0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
QSOP (derate 10mW/°C above +70°C)........................650mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10sec) .............................+300°C
CONDITIONS
V2.7 3.0 5.5Operating Voltage Range
UNITSMIN TYP MAXPARAMETER
RXEN, TXEN V2.0Digital Input Voltage High
RXEN, TXEN = 2.0V µA
630
Digital Input Current High
RXEN, TXEN V0.4Digital Input Voltage Low
Receive mode, RXEN = high, TXEN = low
14 20
Standby mode, RXEN = high, TXEN = high
mA
0.5 1
RXEN, TXEN = 0.4V
Transmit mode, RXEN = low, TXEN = high
17 25
µA-5 0.1Digital Input Current Low
Shutdown mode, RXEN = low, TXEN = low µA
0.2 5
Supply Current
V
VCC/ 2 -
V
CC
/ 2
V
CC
/ 2 +
100mV 100mV
VREF Voltage
(Note 1) kΩ
50 85
GC Input Resistance
(Note 2) MHz100 600Input Frequency Range
Single sideband dB11Noise Figure
TA= +25°C
dB
20.5 22.5 25
Conversion Gain
CONDITIONS
(Note 4) dBm-18.5Input 1dB Compression Point
Two tones at 240MHz and 240.2MHz,
-30dBm per tone
dBm-8Input Third-Order Intercept
UNITSMIN TYP MAXPARAMETER
dBc49LO to RXIN Isolation
Standby to RX or TX (Note 5) µs5Power-Up Time
DOWNCONVERTER (RXEN = high)
19.9 25.5
TA= -40°C to +85°C (Note 3)
MAX2510
Low-Voltage IF Transceiver with
Limiter/RSSI and Quadrature Modulator
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2510 test fixture; VCC= +3.0V; RXEN = TXEN = low; 0.01µF across CZ and CZ; MIXOUT tied to VREF through 165Ω resistor;
TXOUT and TXOUT loaded with 100Ω differential; LO terminated with 50Ω, LO AC grounded; GC open; LIMOUT, LIMOUT are AC
coupled to 250Ω load; 330pF at RSSI pin; 0.1µF connected from VREF pin to GND; P
RXIN, RXIN
= -30dBm differentially driven (input
matched); f
RXIN, RXIN
= 240MHz; bias voltage at I, I, Q, Q = 1.4V; V
I,Q
= 500mVp-p; f
I,Q
= 200kHz; f
LO, LO
= 230MHz; P
LO
= -13dBm;
T
A
= +25°C; unless otherwise noted.)
Note 1: This pin is internally terminated to approximately 1.35V through the specified resistance.
Note 2: Downconverter gain is typically greater than 20dB. Operation outside this frequency range is possible but has not been
characterized.
Note 3: Guaranteed by design and characterization.
LIMOUT, LIMOUT
mV±270 ±300 ±350
-85dBm to 5dBm
Limiter Output Voltage Swing
-75dBm to 5dBm degrees±4.5
dB
Phase Variation
90Minimum Monotonic RSSI Range
-75dBm to 5dBm from 50Ω mV/dB20RSSI Slope
CONDITIONS
-75dBm to 5dBm dB80Minimum Linear RSSI Range
UNITSMIN TYP MAXPARAMETER
(Note 6) dBm-86
At LIMIN input of +5dBm
RSSI Maximum Zero-Scale Intercept
TA= +25°C
dB
±0.5 ±2.0
V
RSSI Relative Error (Notes 6, 7)
1.8Maximum-Scale RSSI Voltage
At LIMIN input of -75dBm V0.25Minimum-Scale RSSI Voltage
I, I, Q, Q inputs are 250mVp-p centered around
this voltage, GC = 2.0V (Note 9)
(Note 8) MHz100 600Frequency Range
1.3
V
CC
-
1.2
I, I, Q, Q Allowable Common-Mode
Voltage Range
GC = 0.5V -41
GC = 2.0V (Note 9)
GC = open -16
-3
90° phase difference between I and Q inputs;
GC = 2V
dBc30 40Unwanted Sideband Suppression
dBm
-2.5 1
Output Power
GC = 2V (Note 11) -33
Output IM3 Level
GC = 2V (Note 11) dBc-51Output IM5 Level
GC = 0.5V (Note 11)
dBc
-49
I, Q are 500mVp-p while I, Q are held at this DC
voltage (Note 9)
1.4
V
CC
-
1.3
90° phase difference between I and Q inputs;
measured to fundamental tone; GC = 2V
dBc30 44LO Rejection
V
TA= -40°C to +85°C (Note 3) ±3.0
TA= +25°C
(Note 3) MHz70 80
I, I, Q, Q 1dB Bandwidth
LIMITING AMPLIFIER AND RSSI (RXEN = high, f
LIMIN
= 10MHz, P
LIMIN
= -30dBm from 50Ω source, unless otherwise noted)
TRANSMITTER (TXEN = high)
TA= -40°C to +85°C
MAX2510
Low-Voltage IF Transceiver with
Limiter/RSSI and Quadrature Modulator
4 _______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(MAX2510 EV kit; VCC= +3.0V; 0.01µF across CZ and CZ; MIXOUT tied to VREF through 165Ω resistor; TXOUT and TXOUT loaded
with 100Ω differential; LO terminated with 50Ω; LO AC grounded; GC open; LIMOUT, LIMOUT open; 330pF at RSSI pin; 0.1µF connected from VREF pin to GND; P
RXIN, RXIN
= -30dBm differentially driven (input matched); f
RXIN, RXIN
= 240MHz; bias voltage at I, I,
Q, Q = 1.4V; V
I,Q
= 500mVp-p; f
I, Q
= 200kHz; f
LO, LO
= 230MHz; PLO= -13dBm; TA= +25°C; unless otherwise noted.)
0
5
15
10
20
Rx
Tx
25
-40 0-20 20406080100
SUPPLY CURRENT
vs. TEMPERATURE
MAX2510toc01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
STANDBY
0
6
4
2
8
10
12
14
16
18
20
2.5 3.53.0 4.0 4.5 5.0 5.5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX2510toc02
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
Rx
STANDBY
Tx
10
5
0
15
25
20
30
35
00.40.2 0.6 1.21.00.8 1.4 1.6 1.8 2.0
TRANSMITTER SUPPLY CURRENT
vs. GC VOLTAGE
MAX2510toc03
GC VOLTAGE (V)
SUPPLY CURRENT (mA)
Note 4: Driving RXIN or RXIN with a power level greater than the 1dB compression level forces the input stage out of its linear
range, causing harmonic and intermodulation distortion. The RSSI output increases monotonically with increasing input
levels beyond the mixer’s 1dB compression level. Input 1dB compression point is limited by MIXOUT voltage swing, which
is approximately 2Vp-p into a 165Ω load.
Note 5: Assuming the supply voltage has been applied, this includes limiter offset-correction settling and Rx or Tx bias stabilization
time. Guaranteed by design and characterization.
Note 6: The RSSI maximum zero-scale intercept is the maximum (over a statistical sample of parts) input power at which the RSSI
output would be 0V. This point is extrapolated from the linear portion of the RSSI Output Voltage vs. Limiter Input Power
graph in the Typical Operating Characteristics. This specification and the RSSI slope define the RSSI function’s ideal
behavior (the slope and intercept of a straight line), while the RSSI relative error specification defines the deviations from
this line. See the Typical Operating Characteristics for the RSSI Output Voltage vs. Limiter Input Power graph.
Note 7: The RSSI relative error is the deviation from the best-fitting straight line of the RSSI output voltage versus the limiter input
power. This number represents the worst-case deviation at any point along this line. A 0dB relative error is exactly on the
ideal RSSI transfer function. The limiter input power range for this test is -75dBm to 5dBm from 50Ω. See the Typical
Operating Characteristics for the RSSI Relative Error graph.
Note 8: Transmit sideband suppression is typically better than 35dB. Operation outside this frequency range is possible but has
not been characterized.
Note 9: Output IM3 level is typically better than -29dBc.
Note 10: The output power can be increased by raising GC above 2V. Refer to the Transmitter Output Power vs. GC Voltage and
Frequency graph in the Typical Operating Characteristics.
Note 11: Using two tones at 400kHz and 500kHz, 250mVp-p differential per tone at I, I, Q, Q.
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