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MAX2410 DS
19-1320; Rev 1; 3/98
Low-Cost RF Up/Downconverter
with LNA and PA Driver
________________General Description
The MAX2410 performs the RF front-end transmit/receive
function in time-division-duplex (TDD) communication
systems. It operates over a wide frequency range and
is optimized for RF frequencies around 1.9GHz.
Applications include most popular cordless and PCS
standards.
The MAX2410 contains a low-noise amplifier (LNA), a
downconverter mixer, a local-oscillator (LO) buffer, an
upconverter mixer, and a variable-gain power-amplifier
(PA) driver in a low-cost, plastic surface-mount package.
The LNA has a 2.4dB (typical) noise figure and a
-10dBm input third-order intercept point (IP3). The down-
converter mixer has a low 9.8dB noise figure and a
3.3dBm IP3. Image and LO filtering are implemented off-
chip for maximum flexibility. The PA driver has 15dB of
gain, which can be reduced over a 35dB (typical) range.
Power consumption is only 60mW in receive mode or
90mW in transmit mode and drops to less than 0.3µW in
shutdown mode.
A similar part, the MAX2411A, features the same func-
tionality as the MAX2410 but offers a differential
bidirectional (transmit and receive) IF port. This allows
the use of a single IF filter for transmit (TX) and receive
(RX). For applications requiring a receive function only,
consult the data sheet for the MAX2406, a low-cost
downconverter with low-noise amplifier.
____________________________Features
©
Low-Cost Silicon Bipolar Design
©
Integrated Upconvert/Downconvert Function
©
Operates from Single +2.7V to +5.5V Supply
©
3.2dB Combined Receiver Noise Figure:
2.4dB (LNA)
9.8dB (Mixer)
©
Flexible Power-Amplifier Driver:
18dBm Output Third-Order Intercept (OIP3)
35dB Gain Control Range
©
LO Buffer for Low LO Drive Level
©
Low Power Consumption:
60mW Receive
90mW Full-Power Transmit
©
0.3µW Shutdown Mode
©
Flexible Power-Down Modes Compatible with
MAX2510/MAX2511 IF Transceivers
_______________Ordering Information
PART
MAX2410EEI
TEMP. RANGE
PIN-PACKAGE
28 QSOP
-40°C to +85°C
MAX2410E/D -40°C to +85°C Dice*
* Dice are specified at T A = +25°C, DC parameters only.
________________________Applications
PWT1900
___________________Pin Configuration
DECT
DCS1800/PCS1900
ISM-Band Transceiver
TOP VIEW
PHS/PACS
Iridium Handsets
GND
1
28
GND
LNAIN
2
3
4
5
27
26
25
24
LNAOUT
GND
GND
RXMXIN
GND
Functional Diagram
GND
V CC
MAX2410
RXEN
6
7
8
23
22
21
GND
LNAOUT
RXMXIN
LO
IFIN
IFOUT
LNA
IFOUT
LO
LNAIN
RX MIXER
TXEN
9
10
11
20
19
18
GND
TXMXOUT
GND
RXEN
TXEN
POWER
MANAGEMENT
LO
LO
V CC
MAX2410
GC
PADROUT
PA DRIVER
TX MIXER
GND
12
13
17
16
GND
PADRIN
IFIN
PADROUT
GND
14
15
GND
GC
PADRIN
TXMXOUT
QSOP
________________________________________________________________ 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 1-800-835-8769.
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Low-Cost RF Up/Downconverter
with LNA and PA Driver
ABSOLUTE MAXIMUM RATINGS
V CC to GND ..............................................................-0.3V to +6V
LNAIN Input Power.........................................................+15dBm
LO, LO Input Power........................................................+10dBm
PADRIN Input Power ......................................................+10dBm
RXMXIN Input Power ......................................................+10dBm
IFIN Input Power.............................................................+10dBm
RXEN, TXEN, GC Voltage...........................-0.3V to (V CC + 0.3V)
Continuous Power Dissipation (T A = +70°C)
QSOP (derate 11mW/°C above +70°C) .......................909mW
Junction Temperature ......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +165°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.
DC ELECTRICAL CHARACTERISTICS
(V CC = 2.7V to 5.5V, V GC = 3.0V, RXEN = TXEN = 0.6V, IFOUT and PADROUT pulled up to V CC with 50
½
resistors, TXMXOUT pulled
resistor, all other RF and IF inputs open, T A = -40°C to +85°C,
unless otherwise noted. Typical values are at T A = +25°C and V CC = 3.0V.)
½
resistor, LNAOUT pulled up to V CC with 100
½
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
Digital Input Voltage High
2.7
5.5
V
RXEN, TXEN pins
2.0
V
Digital Input Voltage Low
RXEN, TXEN pins
0.6
V
RXEN Input Bias Current (Note 1)
RXEN = 2V
TXEN = 2V
0.1
1
µA
TXEN Input Bias Current (Note 1)
0.1
1
µA
GC Input Bias Current
GC = 3V, TXEN = 2V
35
46
µA
Supply Current, Receive Mode
RXEN = 2V
TXEN = 2V
20
29.5
mA
Supply Current, Transmit Mode
30
44.5
mA
Supply Current, Standby Mode
RXEN = 2V, TXEN = 2V
160
520
µA
Supply Current, Shutdown Mode
V CC = 3V
0.1
10
µA
AC ELECTRICAL CHARACTERISTICS
(MAX2410 EV kit, V CC = 3.0V, V GC = 2.15V, RXEN = TXEN = low, f LO = 1.5GHz, P LO = -10dBm, f LNAIN = f PADRIN = f RXMXIN =
1.9GHz, P LNAIN = -32dBm, P PADRIN = P RXMXIN = -22dBm, f IFIN = 400MHz, P IFIN = -32dBm. All measurements performed in 50
½
environment. T A = +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LOW-NOISE AMPLIFIER (RXEN = High)
Gain (Note 1)
T A = +25°C
14.2
16.2
17.4
dB
T A = T MIN to T MAX
12.6
19.1
Noise Figure
2.4
dB
Input IP3
(Note 2)
-10
dBm
Output 1dB Compression
-5
dBm
LO to LNAIN Leakage
RXEN = high or low
-49
dBm
RECEIVE MIXER (RXEN = High)
Conversion Gain (Note 1)
T A = +25°C
6.6
8.3
9.8
dB
T A = T MIN to T MAX
5.4
10.8
Noise Figure
Single sideband
9.8
dB
Input IP3
(Note 3)
3.3
dBm
Input 1dB Compression
-8
dBm
IFOUT Frequency
(Notes 1, 4)
450
MHz
Minimum LO Drive Level
(Note 5)
-17
dBm
2 _______________________________________________________________________________________
up to V CC with 125
104112256.008.png
Low-Cost RF Up/Downconverter
with LNA and PA Driver
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2410 EV kit, V CC = 3.0V, V GC = 2.15V, RXEN = TXEN = low, f LO = 1.5GHz, P LO = -10dBm, f LNAIN = f PADRIN = f RXMXIN =
1.9GHz, P LNAIN = -32dBm, P PADRIN = P RXMXIN = -22dBm, f IFIN = 400MHz, P IFIN = -32dBm. All measurements performed in 50
½
environment. T A = +25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TRANSMIT MIXER (TXEN = high)
Conversion Gain (Note 1)
T A = +25°C
8.6
10
11.1
dB
T A = T MIN to T MAX
7.3
11.8
Output IP3
(Note 6)
-0.3
dBm
Output 1dB Compression Point
-11.4
dBm
LO Leakage
-52
dBm
Noise Figure
Single sideband
8.2
dB
IFIN Frequency
(Notes 1, 4)
450
MHz
Intermod Spurious Response
(Note 7)
f OUT = 2LO-2IF = 2.2GHz
-44
dBc
f OUT = 2LO-3IF = 1.8GHz
-74
dBc
f OUT = 3LO-6IF = 2.1GHz
-90
dBc
POWER AMPLIFIER DRIVER (TXEN = high)
T A = +25°C
13
15
16.4
Gain (Note 1)
dB
T A = T MIN to T MAX
12.3
17
Output IP3
(Note 3)
18
dBm
Output 1dB Compression Point
6.3
dBm
Gain-Control Range
35
dB
Gain-Control Sensitivity
(Note 8)
12
dB/V
LOCAL OSCILLATOR INPUTS (RXEN = TXEN = high)
Input Relative VSWR Normalized to
Standby-Mode Impedance
Receive (TXEN = Low)
1.10
Transmit (RXEN = Low)
1.02
POWER MANAGEMENT (RXEN = TXEN = low)
Receiver Turn-On Time
(Notes 1, 9)
0.5
2.5
µs
Transmitter Turn-On Time
(Notes 1, 10)
0.3
2.5
µs
Note 1: Guaranteed by design and characterization.
Note 2: Two tones at 1.9GHz and 1.901GHz at -32dBm per tone
Note 3: Two tones at 1.9GHz and 1.901GHz at -22dBm per tone
Note 4: Mixer operation guaranteed to this frequency. For optimum gain, adjust output match. See the Typical Operating
Characteristicsfor graphs of IFIN and IFOUT Impedance vs. IF Frequency.
Note 5: At this LO drive level the mixer conversion gain is typically 1dB lower than with -10dBm LO drive.
Note 6: Two tones at 400MHz and 401MHz at -32dBm per tone.
Note 7: Transmit mixer output at -17dBm.
Note 8: Calculated from measurements taken at V GC = 1.0V and V GC = 1.5V.
Note 9: Time from RXEN = low to RXEN = high transition until the combined receive gain is within 1dB of its final value. Measured
with 47pF blocking capacitors on LNAIN and LNAOUT.
Note 10: Time from TXEN = low to TXEN = high transition until the combined transmit gain is within 1dB of its final value. Measured
with 47pF blocking capacitors on PADRIN and PADROUT.
_______________________________________________________________________________________ 3
104112256.009.png
Low-Cost RF Up/Downconverter
with LNA and PA Driver
__________________________________________Typical Operating Characteristics
(MAX2410 EV kit, V CC = 3.0V, V GC = 2.15V, RXEN = TXEN = low, f LO = 1.5GHz, P LO = -10dBm, f LNAIN = f PADRIN = f RXMXIN =
1.9GHz, P LNAIN = -32dBm, P PADRIN = P RXMXIN = -22dBm, f IFIN = 400MHz, P IFIN = -32dBm. All measurements performed in 50
½
environment. T A = +25°C, unless otherwise noted. All impedance measurements made directly to pin (no matching network).)
TRANSMIT-MODE SUPPLY CURRENT
vs. TEMPERATURE
RECEIVE-MODE SUPPLY CURRENT
vs. TEMPERATURE
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
38
24
0.10
TXEN = V CC
RXEN = V CC
RXEN = TXEN = GND
0.09
36
23
V CC = 5.5V
0.08
V CC = 5.5V
34
22
0.07
V CC = 4.0V
21
V CC = 4.0V
0.06
32
0.05
20
0.04
V CC = 5.5V
30
0.03
0.02
0.01
19
V CC = 4.0V
V CC = 3.0V
V CC = 3.0V
28
V CC = 3.0V
18
V CC = 2.7V
V CC = 2.7V
V CC = 2.7V
26
17
0
-40
-15
10
35
60
85
-40
-15
10
35
60
85
-40
-15
10
35
60
85
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
STANDBY SUPPLY CURRENT
vs. TEMPERATURE
LNA INPUT IMPEDANCE
vs. FREQUENCY
LNA OUTPUT IMPEDANCE
vs. FREQUENCY
120
MAX2410-05
40
250
MAX2410-06
0
500
RXEN = TXEN = 2.0V
RXEN = V CC
IMAGINARY
100
0
400
200
-25
V CC = 5.5V
RXEN = V CC
IMAGINARY
80
-40
300
150
-50
V CC = 4.0V
60
-80
200
100
-75
40
-120
REAL
REAL
50
-100
100
V CC = 3.0V
20
-160
V CC = 2.7V
0
0
-200
0
-125
-40
-15
10
35
60
85
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
TEMPERATURE (°C)
FREQUENCY (GHz)
FREQUENCY (GHz)
LNA GAIN vs. FREQUENCY
LNA GAIN vs. TEMPERATURE
LNA INPUT IP3 vs. TEMPERATURE
30
20
-5
1pF SHUNT CAPACITOR AT LNA INPUT
USING EV KIT MATCHING CIRCUIT (OPTIMIZED
FOR 1.9GHz)
RXEN = V CC
-6
-7
-8
-9
RXEN = V CC
V CC = 5.5V
19
25
RXEN = V CC
18
V CC = 4.0V
V CC = 2.7V
V CC = 3.0V
20
17
15
-10
-11
16
V CC = 4.0V
10
15
-12
-13
-14
V CC = 2.7V
V CC = 5.5V
5
14
V CC = 3.0V
0
13
-15
0
0.5
1.0
1.5
2.0
2.5
3.0
-40
-15
10
35
60
85
-40
-20
0
20
40
60
80
100
FREQUENCY (GHz)
TEMPERATURE (°C)
TEMPERATURE (°C)
4 _______________________________________________________________________________________
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Low-Cost RF Up/Downconverter
with LNA and PA Driver
_____________________________Typical Operating Characteristics (continued)
(MAX2410 EV kit, V CC = 3.0V, V GC = 2.15V, RXEN = TXEN = low, f LO = 1.5GHz, P LO = -10dBm, f LNAIN = f PADRIN = f RXMXIN =
1.9GHz, P LNAIN = -32dBm, P PADRIN = P RXMXIN = -22dBm, f IFIN = 400MHz, P IFIN = -32dBm. All measurements performed in 50
½
environment. T A = +25°C, unless otherwise noted. All impedance measurements made directly to pin (no matching network).)
LNA NOISE FIGURE vs. FREQUENCY
LNA OUTPUT 1dB COMPRESSION POINT
vs. SUPPLY VOLTAGE
PA DRIVER INPUT IMPEDANCE
vs. FREQUENCY
5.0
0
160
MAX2410-12
70
TXEN = V CC
4.5
4.0
RXEN = V CC
RXEN = V CC
140
30
-1
120
IMAGINARY
-10
3.5
-2
3.0
2.5
100
-50
-3
80
-90
2.0
1.5
-4
60
-130
40
-170
REAL
1.0
0.5
-5
20
-210
0
-6
0
-250
100
480
860
1240
1620
2000
2.7
3.2
3.7
4.2
4.7
5.2
0
0.5
1.0
1.5
2.0
2.5
3.0
FREQUENCY (MHz)
SUPPLY VOLTAGE (V)
FREQUENCY (GHz)
PA DRIVER OUTPUT IMPEDANCE
vs. FREQUENCY
PA DRIVER GAIN vs. FREQUENCY
PA DRIVER GAIN AND OUTPUT IP3
vs. GAIN-CONTROL VOLTAGE
MAX2410-13
200
50
30
20
USING EV KIT MATCHING NETWORK
(OPTIMIZED FOR 1.9GHz)
TXEN = V CC
15
10
TXEN = V CC
175
0
25
IMAGINARY
150
-50
TXEN = V CC
IP3
5
20
125
-100
0
GAIN
100
-150
15
-5
-10
-15
75
-200
10
50
-250
-20
-25
25
REAL
-300
5
0
-350
0
-30
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.2
0.4 0.6
0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2
FREQUENCY (GHz)
FREQUENCY (GHz)
GAIN-CONTROL VOLTAGE (V)
PA DRIVER OUTPUT IP3
vs. TEMPERATURE
PA DRIVER GAIN vs. TEMPERATURE
PA DRIVER OUTPUT 1dB COMPRESSION
POINT vs. SUPPLY VOLTAGE
21
18
8
TXEN = V CC
TXEN = V CC
20
17
6
V GC = 2.15V
V CC = 5.5V
19
16
V CC = 5.5V
4
18
V CC = 4.0V
TXEN = V CC
V CC = 4.0V
15
2
17
V CC = 3.0V
V CC = 2.7V
14
0
16
V CC = 3.0V
V CC = 2.7V
15
13
-2
V GC = 1.0V
14
12
-4
-40
-20
0
20
40
60
80
100
-40
-15
10
35
60
85
2.7
3.2
3.7
4.2
4.7
5.2
5.7
TEMPERATURE (°C)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________ 5
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