View MAX2700EVKIT_279708.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-1882; Rev 0; 12/00
MAX2700/MAX2701 Evaluation Kits
General Description
The MAX2700/MAX2701 evaluation kits (EV kits) simplify evaluation of the MAX2700/MAX2701 direct downconverter receivers. These kits allow evaluation of the devices' low-noise amplifier (LNA), I/Q demodulator, and variable gain amplifiers (VGAs). Figure 1 shows the MAX2700/MAX2701 EV kits schematic. The EV kits provide 50 SMA connectors for all RF input and output signals, and BNC connectors for all baseband input and output signals.
Features
o Easy Evaluation of MAX2700/MAX2701 o +2.7V to +3.3V Single-Supply Operation o RF Ports Matched to 1960MHz (MAX2700) o RF Ports Matched to 2400MHz (MAX2701) o SMA Connectors for All RF Signal Ports o BNC Connectors for All Baseband Signal Ports o Low-Power Shutdown Mode
Evaluate: MAX2700/MAX2701
Ordering Information
PART MAX2700EVKIT MAX2701EVKIT TEMP.RANGE -40C to +85C -40C to +85C IC PACKAGE 48 TQFP-EP 48 TQFP-EP
MAX2700 Component List
DESIGNATION C1, C17, C18, C19, C21, C22, C23, C30, C31, C32, C36, C37, C38 C2, C10, C11, C25, C43, C46 QTY DESCRIPTION 0.1F 10% ceramic capacitors (0603) Murata GRM39X7R104K016A 68pF 5% ceramic capacitors (0402) Murata GRM36COG680J050A 1000pF 10% ceramic capacitors (0402) Murata GRM36X7R102K050A 2.0pF 0.1pF ceramic capacitors Murata GRM36COG020B050A 0 resistor (0603) 100pF 5% ceramic capacitors (0402) Murata GRM36COG101J050A 0.01F 10% ceramic capacitors (0402) Murata GRM36X7R103K016A 22pF 5% ceramic capacitors (0402) Murata GRM36COG220J050A DESIGNATION C13, C41, C42, C47, C48 C15, C20, C35, C39 QTY 5 DESCRIPTION Not installed 0.056F 10% ceramic capacitors (0603) Murata GRM39X7R563K016A 0.56F 10% ceramic capacitors (0805) Murata GRM40X7R564K016A Not installed 10F tantalum capacitor 10% 16V min AVX TAJC106K016 5pF 0.1pF ceramic capacitor (0402) Murata GRM36COG050B050A
13
4
6
C24, C29 C28 C44
2 1 1
C3, C6, C7, C45
4
C4, C50 C5 C8, C14, C33
2 1 3
C49
1
R1, R12, R15, R26, R32, R40, R45 R2, R5, R6, R11 R3, R4, R7, R8, R9, R10 R13, R14, R19, R20, R33, R34, R38, R39,
7 4 6
0 resistors (0805) 100 5% resistors (0402) 0 resistors (0402)
C9, C16, C34
3
C12, C26, C27, C40
4
8
1k 5% resistors (0402)
________________________________________________________________ Maxim Integrated Products
1
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.
MAX2700/MAX2701 Evaluation Kits Evaluate: MAX2700/MAX2701
MAX2700 Component List (continued)
DESIGNATION R16, R22, R30, R36 R17, R21, R31, R37 R18, R23, R29, R35 R24, R25, R27, R28, R41, R42, R43, R44 T1 Z1 QTY 4 4 4 DESCRIPTION 1.1k 5% resistors (0402) 3.6k 5% resistors (0402) 820 5% resistors (0402) U1 8 51 5% resistors (0402) Balun transformer Murata LDB15C500A1900 4.7nH inductor Toko LL1608-FH4N7J 6pF 0.1pF ceramic capacitor (0402) Murata GRM36COG060B050A Not installed 1.5nH inductor Toko LL1608-FH1N5S 5.6nH inductor Toko LL1005-FH5N6S J2, J4, J5 J2, J4, J5 -- 3 3 1 1 DESIGNATION L5, L6 L7 QTY 2 1 DESCRIPTION 3.9nH inductors Toko LL1608-FH3N9J 0 resistor (0603) MAX2700ECM 48-pin TQFP-EP NOTE: U1 has an exposed paddle which needs to be solder-attached to the circuit board to ensure proper functionality of the part. SMA PC-mount connectors Johnson 142-0701-201 or Digi-Key J500-ND BNC connectors A/D Electronics 580-002-00 Test points, Digi-Key 5000K-ND 1x2 headers (0.1in centers) Digi-Key S1012-36-ND 1x3 headers (0.1in centers) Digi-Key S1012-36-ND Shunts, Digi-Key S9000-ND MAX2700/2701 evaluation kit circuit board, rev. E
1 1
J3, J6, J12, J18
4
J7-J11, J13-J17 VCC, GND J1, TP1
10 2 2
Z4 L2 L3 L4
1 1 1 1
MAX2701 Component List
DESIGNATION C1, C17, C18,C19, C21, C22, C23, C30, C31, C32, C36, C37, C38 C2, C10, C11, C25, C43, C46 QTY DESCRIPTION 0.1F 10% ceramic capacitors (0603) Murata GRM39X7R104K016A 68pF 5% ceramic capacitors (0402) Murata GRM36COG680J050A 1000pF 10% ceramic capacitors (0402) Murata GRM36X7R102K050A 1.5pF 0.1pF ceramic capacitors Murata GRM36COG1R5B050A 10pF 0.1pF ceramic capacitor (0603) Murata GRM39COG100B050A DESIGNATION C8, C14, C33 QTY 3 DESCRIPTION 100pF 5% ceramic capacitors (0402) Murata GRM36COG101J050A 0.01F 10% ceramic capacitors (0402) Murata GRM36X7R103K016A 22pF 5% ceramic capacitors (0402) Murata GRM36COG220J050A 2pF 0.1pF ceramic capacitor (0402) Murata GRM36COG020B050A 0.056F 10% ceramic capacitors (0603) Murata GRM39X7R563K016A
13
C9, C16, C34
3
6
C3, C6, C7, C45
4
C12, C26, C27, C40
4
C13
1
C4, C50
2
C5
1
C15, C20, C35, C39
4
2
_______________________________________________________________________________________
MAX2700/MAX2701 Evaluation Kits Evaluate: MAX2700/MAX2701
MAX2701 Component List (continued)
DESIGNATION C24, C29 C28, C41, C42, C47, C48 C44 QTY 2 DESCRIPTION 0.56F 10% ceramic capacitors (0805) Murata GRM40X7R564K016A Not installed 10F tantalum capacitor 10% 16V min AVX TAJC106K016 3pF 0.1pF ceramic capacitor (0402) Murata GRM36COG030B050A U1 1 DESIGNATION L4 L7 QTY 1 1 DESCRIPTION 5.6nH inductor Toko LL1005-FH5N6S 0 resistor (0603) MAX2701ECM 48-pin TQFP-EP NOTE: U1 has an exposed paddle which needs to be solder-attached to the circuit board to ensure proper functionality of the part. SMA PC-mount connectors Johnson 142-0701-201 or Digi-Key J500-ND BNC connectors A/D Electronics 580-002-00 Test points, Digi-Key 5000K-ND 1x2 headers (0.1in centers) Digi-Key S1012-36-ND 1x3 headers (0.1in centers) Digi-Key S1012-36-ND Shunts, Digi-Key S9000-ND MAX2700/MAX2701 evaluation kit circuit board, rev. E
5
1
C49
1
J3, J6, J12, J18 J7-J11, J13-J17 VCC, GND J1, TP1 J2, J4, J5
4
R1, R12, R15, R26, R32, R40, R45 R2, R5, R6, R11 R3, R4, R7, R8, R9, R10 R13, R14, R19, R20, R33, R34, R38, R39 R16, R22, R30, R36 R17, R21, R31, R37 R18, R23, R29, R35 R24, R25, R27, R28, R41, R42, R43, R44 T1
7 4 6
0 resistors (0805) 100 5% resistors (0402) 0 resistors (0402)
10 2 2 3 3 1
8
1k 5% resistors (0402)
J2, J4, J5 --
4 4 4
1.1k 5% resistors (0402) 3.6k 5% resistors (0402) 820 5% resistors (0402)
Component Suppliers
8 51 5% resistors (0402) Balun transformer Murata LDB15C500A2400 0.5pF 0.1pF ceramic capacitor (0603) Murata GRM39COG0R5B050A 1nH inductor Toko LL1005-FH1N0S Not installed 2.7nH inductors Toko LL1608-FH2N7S SUPPLIER AVX 1 EFJohnson Kamaya Murata Toko PHONE 803-946-0690 402-474-4800 219-489-1533 949-852-2001 708-297-0070 FAX 803-626-3123 402-474-4858 219-489-2261 949-852-2002 708-699-1194
Z1
1
Z4 L2 L3, L5, L6
1 1 3
Note: Please indicate that you are using the MAX2700 or MAX2701 when contacting these component suppliers.
_______________________________________________________________________________________
3
MAX2700/MAX2701 Evaluation Kits Evaluate: MAX2700/MAX2701
Table 1. Recommended Test Equipment
EQUIPMENT RF Signal Generators (2) Dual-Channel Oscilloscope Power Supply Additional Variable Voltage Source Spectrum Analyzer DESCRIPTION HP 8648C or equivalent, capable of delivering -50dBm to -10dBm of output power from 900MHz to 2500MHz For viewing the demodulator outputs Capable of providing at least 200mA at +2.7V to +3.3V For external control of VGA function HP 8561E or equivalent, covering MAX2700/MAX2701 operating frequency range (2) 50 cables with SMA connectors (2) BNC cables to check baseband signals For measuring supply current HP 8970B or equivalent, for measuring the noise figure of the LNA and I/Q demodulator HP 8753D or equivalent, for measuring return loss and gain simultaneously
3) Set the X2EN jumper on the EV kit to GND (LOW). This enables the VCO doubler. 4) Connect a DC supply preset to +3V (through an ammeter, if desired) to the EV kit's VCC and GND terminals. Do not turn on the supply. 5) Perform a full two-port calibration on a network analyzer at a -30dBm power level. 6) Connect port 1 and port 2 of network analyzer to LNAIN and LNAOUT, respectively. 7) Turn on the DC supply. The supply current should read approximately 165mA for MAX2700 (167mA for MAX2701) if using an ammeter. 8) The network analyzer display should indicate a typical gain of 16.5dB for MAX2700 at 1960MHz (15.5dB for MAX2701at 2400Mhz) after accounting for board losses. 9) The input and output board losses for MAX2700 are 0.25dB and 0.3dB, respectively. The input and output board losses for MAX2701 are 0.3dB and 0.35dB, respectively. 10) Set the GAIN_SET jumper on the EV kit to GND (LOW). This enables the LNA's low-gain-mode operation. Measurements on the network analyzer should indicate a typical gain of -1.75dB for MAX2700 (-2.5dB for MAX2701) after accounting for board losses. 11) Connect the SHDN jumper to GND (LOW) to activate the shutdown mode. The supply current should drop to less than 100A. I/Q Demodulator 1) Turn off the DC supply. 2) Remove the network analyzer from the LNAIN and LNAOUT connections. The DC supply connections needed for testing the downconverter mixer are the same as in the LNA section. 3) Set jumper J2 (X2_EN) to GND (LOW) to enable the LO doubler circuit. 4) Connect an RF signal generator (with output disabled) to the LO SMA connector. Set the frequency to 980MHz for MAX2700 (1200MHz for MAX2701) and the output power to -10dBm. This is the LO signal. 5) Connect another RF signal generator to the RFIN SMA connector (with output disabled). Set the frequency to 1961MHz for MAX2700 (2401MHz for MAX2701) and the output power to -25dBm. This is the RF input signal.
Cables (50) Cables with BNC Connectors Ammeter (optional) Noise Figure Meter (optional)
Network Analyzer
Quick Start
The MAX2700/MAX2701 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation.
Connections and Setup
This section provides a step-by-step guide to setting up the MAX2700/MAX2701 EV kits and testing all three major functional blocks: LNA, I/Q demodulator, and VGAs. Do not turn on the DC power or RF signal generators until all connections are made. Low-Noise Amplifier 1) Set the SHDN jumper on the EV kit to VCC (HI). This enables the device to operate in the normal mode. 2) Set the GAIN_SET jumper on the EV kit to VCC (HI). This enables the LNA to operate in high-gain mode.
4
_______________________________________________________________________________________
MAX2700/MAX2701 Evaluation Kits
6) Connect the oscilloscope to the MIX_I (for I channel signal) BNC connector. Set the oscilloscope to high-impedance input mode. 7) Turn on the DC supply. Enable the LO signal generator and RF input signal generator outputs. 8) Measure the peak-to-peak amplitude of the 1MHz IF signal on the oscilloscope with a high-impedance probe (VOUTp-p). Voltage gain can be calculated by the following formula: Voltage Gain = 20 log[((V OUTp-p ) / (2 VIN (RMS)] VIN (RMS) = SQRT(50 10-3 10Pin(dBm)/10) Voltage Gain should be nominally 19.3dB for MAX2700 (18.1dB for MAX2701). Note: Compensate PIN for input balun loss (1.25dB) and input board loss (0.3dB) and VOUT p-p for the voltage divider network at the mixer output. To check the Q-channel performance of the I/Q demodulator, connect the oscilloscope to MIXQ and repeat the measurements from step 7 of the I/Q Demodulator section. Variable Gain Amplifiers 1) Remove the RF signal generators and oscilloscope from RFIN, LO, and MIXI connections. The DC supply connections needed for testing the VGAs are the same as in the LNA section. Turn off the DC supply while making connections. 2) Connect a variable voltage source, preset to +1.25V, to the VGC input of the EV kit. Do not turn on the supply. 3) Connect an RF signal generator to the BNC connector of input IIN1+ (using appropriate connector adapters). Do not turn on the generator's output. Set the generator for a output frequency of 1MHz at a -40dBm power level. 4) Connect the oscilloscope to the IOUT1 (for I channel signal) BNC connector. Set the oscilloscope to high-impedance-input mode. 5) Turn on the DC supply and the voltage source connected to the VGC input. 6) Measure the peak-to-peak output voltage of the 1MHz signal on the oscilloscope (VOUTp-p), and compute the voltage gain using the equation in the I/Q demodulator section. The voltage gain should be nominally 20dB between IIN1+ (J16) and IOU1 (J15).
7) Connect a jumper across J1. 8) Perform a similar measurement between IIN2+ (J14) and IOUT2 (J13); voltage gain should be 30dB nominal between IIN2+ and IOUT2. Note: Compensate PIN for the input network loss and VOUTp-p for the voltage divider network at the amplifier output. 9) The corresponding VGAs in the Q channel (between QIN1+ and QOUT1 and between QIN2+ and QOUT2) can be tested in the same way.
Evaluate: MAX2700/MAX2701
2)) /
Checking Noise Figure
Noise-figure measurements are sensitive to board and lab setup losses and parasitics. There are many techniques and precautions for measuring a low-noise figure. Detailed explanation of these items goes beyond the scope of this document. For more information on how to perform this level of noise-figure measurement, refer to the noise-figure meter operating manual, as well as to Hewlett Packard application note #57-2, Noise Figure Measurement Accuracy.
PC Board Layout Considerations
The MAX2700/MAX2701 EV kits can serve as board layout guides. Keep PC board trace lengths as short as possible to minimize parasitics. Keep decoupling capacitors close to the device, with a low inductance via connection to the ground plane.
Modifying the EV Kit
The MAX2700/MAX2701 EV kits have been optimized for operation at 1960MHz and 2400MHz, respectively. The MAX2700/MAX2701 EV kits can be configured to operate in the 1800MHz to 2100MHz band and the 2100MHz to 2500MHz band, respectively. Use the device parameters listed in the MAX2700/MAX2701 data sheet to determine the proper input and output matching components at other frequencies.
_______________________________________________________________________________________
5
Evaluate: MAX2700/MAX2701
VCC J19 C44 10F C47 OPEN VCC C42 OPEN R40 0 C48 OPEN R38 1k R35 820 C33 C34 100pF 0.01F R31 3.6k C36 0.1F C32 0.1F C31 0.1F 36 R29 820 C43 68pF C37 0.1F 41 DCI1 DCI1B IOUT1 VCC2 IIN2 40 39 38 37 C41 OPEN C40 22pF C39 0.056F C35 0.056F R32 0 R37 3.6k R30 1.1k L7 0 R39 1k R36 1.1k R33 1k VCC R43 51 R44 51 R34 1k J14 C45 1000pF C46 68pF J18 J17 J16 J15
MIXI
IIN1
GNDLO
1 CEXTB 35 C30 0.1F VCCRF 33 C29 0.56F C27 22pF 31 30 RFINB VCCMIX 29 C25 68pF QOUT2 DCQ2B 28 C24 0.56F 27 C23 0.1F 11 AGC VCCLNA GNDRF LNAOUT GNDRF MIXQ VCC1 QIN1 C9 0.01F QIN1B C10 68pF 13 2 GND L2 OPEN 1 GND 14 GND IND-0402 15 16 17 18 C17 0.1F C8 100pF 12 DCQ2 QIN2B DCQ1 DCQ1B DCQ2B QIN2 GNDMIX 26 25 C22 0.1F 20 21 22 C49 5pF C19 0.1F R18 820 C14 C16 100pF 0.01F R17 3.6k VCC R15 0 R13 1k J6 R14 1k R16 1.1k C20 0.056F R19 1k R20 1k 23 2 19 C18 0.1F 24 R23 820 R24 51 C26 22pF L6 3.9nH L5 3.9nH R26 0 VCC C28 OPEN R27 51 DC12B 34 IIN2B C1 0.1F 2 CEXT DC12 3 R2 100 4 X2ENB IOUT2 C2 68pF R1 0
X2ENB VCC
VCC
R3 0
VCCLO
GNDLO
IIN1B
J1
LO
MAX2700/MAX2701 Evaluation Kits
1
Figure 1a. MAX2700 EV Kit Schematic
R41 51
R22 1.1k R42 51
J7
J8
J9
J10
1
6
J20 48 47 46 45 44 43 C38 0.1F 42 J13 C3 1000pF GND 5 GNDRF
J2
R4 0
U1
GNDMIX 32
R28 51
C5 0 Z4 5pF 6 LNAIN RFIN Z1 4.7nH GND 7 GNDRF 8 GND GAINSET R5 100 9 C6 1000pF 10 SHDNB C7 1000pF R6 100 R11 100 R12 0 J3
MAX2700
C50 2.0pF 3 5 4 C4 2.0pF
2
VCC
R7 0
T1 BALUN/MUR/LDB 1 J12
J4
R8 0
J11
VCC
R9 0
R25 51
J5 TP1 VCC
R10 0
X5 MTHOLE4 1 X6 MTHOLE4 1 C21 0.1F L4 5.6nH R21 3.6k X7 MTHOLE4 1 X8 MTHOLE4 1 X9 LOGO
VCC R45 0 C11 68pF C13 OPEN C15 0.056F C12 22pF L3 1.5nH
_______________________________________________________________________________________
VCC J19 C44 10F C47 OPEN VCC C42 OPEN R40 0 C48 OPEN R38 1k R35 820 C33 C34 100pF 0.01F R31 3.6k C36 0.1F C32 0.1F C31 0.1F 36 R29 820 C39 0.056F C37 0.1F 41 DCI1 DCI1B IOUT1 VCC2 IIN2 40 39 38 37 C35 0.056F R32 0 R37 3.6k R30 1.1k L7 0 R39 1k R36 1.1k R33 1k VCC R43 51 R44 51 R34 1k J14 C45 1000pF C46 68pF J18 J17 J16 J15
J20
C43 68pF C40 22pF
C41 OPEN
MIXI
IIN1
GNDLO
1 CEXTB 35 C30 0.1F VCCRF 33 C29 0.56F C27 22pF 31 30 RFINB VCCMIX 29 C25 68pF QOUT2 DCQ2B 28 C24 0.56F 27 C23 0.1F DCQ2 LNAOUT QIN2B QIN1B DCQ1 DCQ1B QOUT QIN2 26 25 C22 0.1F 20 21 22 C49 3pF 23 2 24 19 C18 0.1F R23 820 R24 51 C26 22pF L6 2.7nH L5 2.7nH R26 0 VCC C28 OPEN 4 C4 1.5pF R27 51 DC12B 34 IIN2B C1 0.1F 2 CEXT DC12 R1 0 3 R2 100 4 X2ENB IOUT2 C3 1000pF GND 5 GNDRF C2 68pF
X2ENB VCC
VCC
R3 0
VCCLO
GNDLO
IIN1B
J1
LO
GNDRF
VCC1
GNDRF
MIXQ
QIN1
C10 68pF 13 2 GND L2 OPEN 1 GND 14 GND IND-0402 15 16 17 18 C17 0.1F
GNDMIX
1
R13 1k J6
R14 1k
R16 1.1k
R22 1.1k R42 51 R41 51 J7 J8
Evaluate: MAX2700/MAX2701
_______________________________________________________________________________________
48 47 46 45 44 43 C38 0.1F 42 J13
J9
J10
1
Figure 1b. MAX2701 EV Kit Schematic
U1
GNDMIX 32 R28 51 C5 10pF Z4 1nH 6 LNAIN RFIN Z1 0.5pF GND 7 GNDRF J3
J2
R4 0
MAX2701
C50 1.5pF 3 5
2
VCC
R7 0 8 GND GAINSET R5 100 9 C6 1000pF 10 SHDNB C7 1000pF 11 AGC VCCLNA C9 0.01F C8 100pF 12 R6 100 R11 100 R12 0
T1 MURATA LDB15C500A2400 1 J12
J4
R8 0
J11
VCC
R9 0
R25 51
J5 TP1 VCC
R10 0
X5 MTHOLE4 1 X6 MTHOLE4 1 C21 0.1F X7 MTHOLE4 1
VCC R45 0 C11 68pF C13 2pF C12 22pF C15 0.056F L3 2.7nH
C14 C16 100pF 0.01F
C19 0.1F R18 820 R17 3.6k VCC R15 0
C20 0.056F R19 1k
L4 5.6nH
R21 3.6k R20 1k
X8 MTHOLE4 1 X9 LOGO
MAX2700/MAX2701 Evaluation Kits
7
MAX2700/MAX2701 Evaluation Kits Evaluate: MAX2700/MAX2701
1.0"
1.0"
Figure 2. MAX2700/MAX2701 EV Kits PC Board Layout-- Component Side
Figure 3. MAX2700/MAX2701 EV Kits PC Board Layout-- Ground Plane
1.0"
8
Figure 4. MAX2700/MAX2701 EV Kits PC Board Layout-- Power Plane _______________________________________________________________________________________
MAX2700/MAX2701 Evaluation Kits Evaluate: MAX2700/MAX2701
1.0"
1.0"
Figure 5. MAX2700/MAX2701 EV Kits Component Placement Guide--Top Silkscreen
Figure 6. MAX2700/MAX2701 EV Kits PC Board Layout-- Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________9 (c) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

▲Up To Search▲

Price & Availability of MAX2700EVKIT

	To Download MAX2700EVKIT Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .