Integrated Transceiver
2.4 - 2.5 GHz
V 3.00
MD58-0033
Features
Functional Schematic
V
GG
GND
Tx IN
Rx LOGIC
NC
GND
Rx IF OUT
GND
V
DD
GND
GND
GND
Rx LOGIC
RF IN
Fully Integrated Transmit and Receive Functions
Operates with +3 V to +5 V Supply Voltage
Low 24 mA Receive Current
High Receiver Dynamic Range (IIP
3
= -2 dBm)
On-Chip Receive Image Rejection
(18 dB @ 350 MHz IF)
Low Transmit Mode Current: 40 mA @ 5 V
Low Power Standby Operating Mode
Receive & Transmit Operating Modes
14
1
Description
M/A-COM’s MD58-0033 is a highly integrated front-end
transceiver with exceptional RF performance.
The
transceiver is ideally suited for FSK or linear systems in the
2.4 -2.5 GHz ISM band. The receive chain includes an
LNA, image rejection filter, and a balanced mixer suitable
for high data rate applications. The transmit chain uses
single-ended or balanced IF input to drive an upconverting
balanced mixer, and an RF combiner to provide exceptional
output spurious performance.
Applications for this
transceiver include WLAN, WPBX and portable data
terminals demanding low power consumption.
The
transceiver can be used alone for low-power transmission,
or in conjunction with M/A-COM's AM55 series 2.4 GHz
power amplifiers for higher power applications. The
MD58-0033 is a drop-in replacement for the MD58-0005
transceiver.
M/A-COM fabricates the MD58-0033 using a low-noise
GaAs E/D MESFET process that features full chip
passivation for performance and reliability.
15
28
Pin Configuration
Pin No.
1
2,6,8,10,
11,12,18,
22,23,25,
26,
3
4
5
7
Pin Name
V
GG
GND
Description
Negative Supply Voltage (-5 V)
DC and RF Ground
LO LOGIC
LO IN
GND
GND
V
DD
GND
GND
Tx IF -
Tx IF +
V
DD
GND
RF OUT
Tx LOGIC
V
GG
Tx Logic
Rx Logic
NC
Rx IFOUT
V
DD
Rx Logic
RF IN
V
GG
Tx Logic
RF OUT
V
DD
Tx IF+
Logic control line for transmit functions
Logic control line for receive functions
No connection
Receive IF output, external LC match and
bias injection
Positive Supply Voltage (+5 V)
Logic control line for receive functions
RF input to the receive LNA, internally AC
coupled, Z
IN
= 50
τ
Negative Supply Voltage (-5 V)
Logic control line for transmit functions
Transmit RF output, internally AC
coupled, Z
OUT
= 50
τ
Positive Supply Voltage (+5 V)
Single-ended transmit IF input, or first of
two balanced IF inputs, externally AC
coupled
Transmit IF input, second of two balanced
IF inputs, externally AC coupled to
ground for single-ended operation
Positive Supply Voltage (+5 V)
LO buffer input, internally AC coupled,
Logic control line for LO buffer functions
9
13
Transceiver Truth Table
PINS
4, 13 (Rx LOGIC)
3, 16 (Tx LOGIC)
28 (LO LOGIC)
Receive
Mode
1
0
1
Transmit
Mode
0
1
1
Standby
Mode
0
0
0
14
15
16
17
19
20
“0” = -5 V @ 100
←A
Typ. To –6 V @ 200
←A
Typ.
“1” = 0 V to –0.2 V @ 100
←A
Typ.
21
Tx IF-
24
27
28
V
DD
LO IN
LO LOGIC
Integrated Transceiver, 2.4 - 2.4 GHz
MD58-0033
V 3.00
Electrical Specifications: RF = 2.5 GHz, IF = 350 MHz, LO = -5 dBm,
V
DD
= +5 V ± 5%, V
GG
= -5 V ± 10%
4
, T
A
= +25°C
Parameter
Receive Mode
RF Frequency Range
IF Frequency Range
Conversion Gain
SSB Noise Figure
Input P
1dB
V
DD
(+5V) Current
V
GG
(-5V) Current
Transmit Mode
RF Frequency Range
IF Frequency Range
RF Output Power
LO Leakage Level
Output Spurious Levels in RF Band
V
DD
(+5 V) Current
V
GG
(-5 V) Current
Standby Mode
V
DD
(+5 V) Current
V
GG
(-5 V) Current
1.
2.
3.
4.
Test Conditions
Units
Min.
Typ.
Max.
IF output Impedance
1
Externally matched to 50τ
GHz
MHz
dB
dB
dBm
mA
mA
2.4
50
4
10
12
5.1
-10
24
0.5
2.5
400
6.5
35
1.5
IF input
2
of –8 dBm
GHz
MHz
dBm
dBm
dBc
mA
mA
2.4
200
-2
2
-18
45
57
40
0.5
2.5
400
-12
60
1.5
mA
mA
1.5
0.5
3.0
1.5
The receive IF output impedance is 300 ohms. An external LC circuit is used for impedance matching and bias injection
The transmit IF input impedance is 100 ohms, single ended.
In-band spurious, 7IF and 2 LO-5IF.
Image rejection for IF down to 200 MHz, We recommend –8 to –2 dBm LO drive.
Absolute Maximum Ratings
1
Parameter
Max Input Power
Operating Voltages
Operating Temperature
Storage Temperature
Absolute Maximum
+20 dBm
V
DD
= 6 V, V
GG
= -6 V
-40 °C to +85 °C
-65 °C to +150 °C
1. Exceeding these limits may cause permanent damage.
2. Ambient temperature (T
A
) = +25°C
Specifications subject to change without notice.
North America:
Tel. (800) 366-2266
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
2
Integrated Transceiver, 2.4 - 2.4 GHz
General Information
The MD58-0033 is a highly integrated MMIC transceiver
designed for the 2.4-2.5 GHz ISM band. The transceiver
provides exceptional RF performance while consuming
low DC current and is packaged in a low cost plastic
package. It is ideal for light weight battery operated
portable radio systems.
The receive chain consists of an LNA, an image reject
filter, a balanced mixer and a single ended IF output
buffer. The entire receiver consumes only 24 mA while
achieving 12 dB gain and 5 dB of SSB NF with an IIP
3
of –2 dBm. The transmit chain consists of a double-
balanced mixer and an RF combiner to provide low in-
band output spurious while consuming only 40 mA. The
LO signal is amplified by an on-chip buffer and injected to
the receive and transmit mixers by a LO switch.
The RF output, RF input and LO input ports are designed
for a 50-ohm impedance. All RF ports are internally AC
coupled. The receive IF output impedance is 300 ohms.
For the Receive IF output, external components are used
for impedance matching and bias injection. The transmit
IF inputs are designed for 100-ohm impedance (200-ohm
differential).
MD58-0033
V 3.00
Receive IF Output Impedance
The receiver is designed for an output impedance of
300 ohms. The receive IF output also requires a VDD
bias. Using an external “LC match,” as shown in the
figure below, the IF output impedance matching and
bias injection can be accommodated simultaneously.
The table below shows suggested matching elements
for various IF frequencies when matching to 50 ohms.
Element values may vary slightly depending on
component vendor and radio board layout.
Receive IF Output Matching
Receive IF
Output Leads
(Pin 7)
LC Impedance
Match
IF Output
AC Bypass
Capacitor
V
DD
Bias
Injection
Receive IF Frequency Matching
IF Frequency (MHz)
200 - 249
250 - 299
300 - 349
350 - 400
Shunt Inductor
90 nH
68 nH
58 nH
47 nH
Series Capacitor
6 pF
4 pF
4 pF
3 pF
Transceiver Operation Modes
The transceiver is designed for three modes of operation,
transmit, receive and stand-by. These modes are set by
using three logic lines: one for receive, a second for
transmit and a third logic line for the LO buffer. These
logic lines allow rise times within micro seconds for fast
“turn-on” and “turn-off” of each function. (See the
transceiver truth table for logic and voltage levels.)
Test Set-up Information
The following two figures illustrate the test set-up
suggested for transceiver evaluation, indicating the
power levels used for the data displayed in the typical
performance figures
Bias Sequence
The transceiver bias sequence is as follows; 1) always
make the ground connection first, 2) apply the V
GG
supply
voltage, 3) connect all logic lines to the logic “0” so the
transceiver will bias up in the stand-by mode when the
positive supply is connected, 4) apply the V
DD
supply
voltage and change the logic levels as desired.
Receive Test Set-up
The receive gain is measured as the total combined IF
output power. Receiver small signal gain measurements
are made for –20 dBm RF input power. The figure
shows the typical receiver test set-up. The LO drive
level is –5 dBm. Transmit ports should be terminated in
50 ohms.
RF OUT
RF Source
2.4 – 2.5 GHz
LO Source
-5 dBm
Tx IF+
Transceiver
Tx IF-
LO IN
IF OUT (50 – 400 MHz)
RF IN
Rx IF
Spectrum
Analyzer
External Components and Circuit
Board Layout
This data sheet contains a suggested PCB layout and
schematic to follow when designing a full radio board.
For more detailed information, contact the number listed
below.
The external components serve two basic
functions. The first purpose is to bypass the power supply
lines since all power supply lines require external
capacitive bypass to present an AC short over a wide
frequency band. The second use is for LC matching/bias
injection for the receive IF output, as described.
Specifications subject to change without notice.
North America:
Tel. (800) 366-2266
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
3
Integrated Transceiver, 2.4 - 2.4 GHz
Transmit Test Set-up
The IF input power level is typically –8 dBm and the LO
input power level is –5 dBm. Receive ports should be
terminated in 50 ohms.
MD58-0033
V 3.00
Typical Measured Results
Measured results for a typical board mounted
transceiver sample are shown in the performance curve
section of this data sheet. The measurements were
made using the test set-up described for receive and
transmit. The board used for these measurements is the
MD58-0033SMB, or transceiver evaluation board. This
evaluation board can be ordered for engineering
evaluation.
RF OUT
IF Source
-8 dBm
200 – 400 MHz
Tx IF+
Tx IF-
LO IN
RF IN
Rx IF
2.4 – 2.5 GHz
Spectrum
Analyzer
LO Source
-5 dBm
Transceiver
Typical Receiver Performance Characteristics
1
Gain and NF vs. RF Frequency
20
Gain and NF (dB)
15
Gain
10
SSB NF
5
0
Gain, NF and P
1dB
vs. Low Power
20
15
Gain and NF (dB)
10
5
0
-5
-10
-15
-10
0
SSB NF
Input P
1dB
-15
-8
-6
-4
-2
0
LO INPUT POWER (dBm)
Gain
20
P
1dB
(dBm)
2.1
2.2
2.3
2.4
2.5
2.6
2.7
RF INPUT FREQUENCY (GHz)
Input Compression vs. RF Frequency
5
Power (dBm)
0
Input IP
3
-5
Input P
1dB
-10
-15
2.1
Gain, NF and P
1dB
vs. Power Supply
Gain and NF (dB)
20
15
10
5
0
-5
-10
-15
3
20
P
1dB
(dBm)
Gain
0
Input P
1dB
SSB NF
-15
4
5
6
7
2.2
2.3
2.4
2.5
2.6
2.7
RF INPUT FREQUENCY (GHz)
POWER SUPPLY (+V
DD
/-V
GG
)
Gain and Noise Figure vs. IF Frequency
20
Gain and NF (dB)
15
Gain
10
SSB NF
5
0200
250
300
350
400
Gain, NF and P
1dB
vs. Temperature
Gain and NF (dB)
20
15
10
5
0
-5
-10
-15
-20
0
SSB NF
Input P
1dB
-15
70
20
Gain
P
1dB
(dB )
-5
IF FREQUENCY (MHz)
10
25
40
55
TEMPERATURE (°C)
1. Test conditions unless otherwise specified:
RF = 2.5 GHz, IF = 350 MHz, LO Input Power = -5 dBm (@ 2.15 GHz), V
DD
= +5 V, V
GG
= -5 V, T
A
= +25 °C
Specifications subject to change without notice.
North America:
Tel. (800) 366-2266
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
4
Integrated Transceiver, 2.4 - 2.4 GHz
Typical Receiver Performance Characteristics
1
Power Output vs. RF Frequency
Power (dBm)
Power (dBm)
0
-5
-10
-15
-20
-25
-30
2.1
RF Output
Image Output
LO Output
2.2
2.3
2.4
2.5
2.6
2.7
MD58-0033
V 3.00
Power Output vs. LO Power
10
-5
-20
-35
-50
-65
-80
-10
LO Output
2LO – 5IF
RF Output
RF OUTPUT FREQUENCY (GHz)
-8
-6
-4
-2
LO INPUT POWER (dBm)
0
Power Output vs. IF Power
10
Power (dBm)
-5
-20
-35
-50
-65
-80
-15.0
LO OUTPUT
7IF
2LO –5IP
-12.5
-10.0
-7.5
IF INPUT POWER (dBm)
-5.0
RF OUTPUT
Power Output vs. Power Supply
0
RF OUTPUT
Power (dBm)
-20
LO OUTPUT
-40
2LO –5IF
-60
-80
3
4
5
6
7
SUPPLY VOLTAGE (+V
DD
/-V
GG
)
Power Output vs. IF Frequency
0
Power (dBm)
Power Output vs. Temperature
10
Power (dBm)
-10
-30
-50
2LO –5IF
-70
-90
-20
-5
10
25
40
55
70
RF Output
LO Output
-5
-10
-15
-20
-25
200
250
RF Output
LO Output
300
350
400
IF INPUT FREQUENCY (MHz)
TEMPERATURE (°C)
1. Test conditions unless otherwise specified:
RF = 2.5 GHz, IF = 350 MHz, LO Input Power = -5 dBm (@ 2.15 GHz), V
DD
= +5V, V
GG
= -5 V, T
A
= +25 °C
Specifications subject to change without notice.
North America:
Tel. (800) 366-2266
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
5
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