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MAX2063

Dual 50MHz to 1000MHz High-Linearity,

Serial/Parallel-Controlled Digital VGA

General Description

The MAX2063 high-linearity, dual digital variable-gain

amplifier (VGA) operates in the 50MHz to 1000MHz

frequency range. Each digital attenuator is controlled

as a slave peripheral using either the SPIK-compatible

interface or a 5-bit parallel bus with 31dB total adjust-

ment range in 1dB steps. An added feature allows

“rapid-fire” gain selection between each of four steps,

preprogrammed by the user through the SPI-compatible

interface. A separate 2-pin control allows the user to

quickly access any one of four customized attenuation

states without reprogramming the SPI bus.

Since each of the stages has its own external RF input

and RF output, this component can be configured

to either optimize noise figure (amplifier configured

first) or OIP3 (amplifier configured last). The device’s

performance features include 24dB of amplifier gain

(amplifier only), 5.6dB noise figure (NF) at maximum

gain (including attenuator insertion losses), and a high

OIP3 level of +41dBm. Each of these features makes the

device an ideal VGA for multipath receiver and transmitter

applications.

In addition, the device operates from a single +5V

supply with full performance, or a +3.3V supply for an

enhanced power-savings mode with lower performance.

This device is available in a compact 48-pin thin QFN

package (7mm x 7mm) with an exposed pad. Electrical

performance is guaranteed over the extended tempera-

ture range, from T

= -40NC to +85NC.

Applications

IF and RF Gain Stages

Temperature-Compensation Circuits

Cellular Band WCDMA and cdma2000

Base

Stations

GSM 850/GSM 900 EDGE Base Stations

WiMAXK and LTE Base Stations and Customer

Premise Equipment

Fixed Broadband Wireless Access

Wireless Local Loop

Military Systems

Features

S Independently Controlled Dual Paths

S 50MHz to 1000MHz RF Frequency Range

S Pin-Compatible Family Includes

MAX2062 (Analog/Digital VGA)

MAX2064 (Analog-Only VGA)

S 21.3dB (typ) Maximum Gain

S 0.25dB Gain Flatness Over 100MHz Bandwidth

S 31dB Gain Range

S 58dB Path Isolation at 200MHz

S Supports Four “Rapid-Fire” Preprogrammed

Attenuator States

Quickly Access Any One of Four Customized

Attenuation States Without Reprogramming the

SPI Bus

Ideal for Fast-Attack, High-Level Blocker

Protection

Prevents ADC Overdrive Condition

S Excellent Linearity at 200MHz

+41dBm OIP3

+56dBm OIP2

+19dBm Output 1dB Compression Point

S 5.6dB Typical Noise Figure

S 25ns Digital Switching Time

S Very Low Distortion VGA Amplitude Overshoot/

Undershoot of 0.05dB

S Single +5V Supply (or +3.3V Operation)

S Amplifier Power-Down Mode for TDD Applications

19-5303; Rev 0; 6/10

Ordering Information

SPI is a trademark of Motorola, Inc.

cdma2000 is a registered trademark of Telecommunications

Industry Association.

WiMAX is a trademark of WiMAX Forum.

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

T = Tape and reel.

PART TEMP RANGE PIN-PACKAGE

MAX2063ETM+

-40NC to +85NC

48 Thin QFN-EP*

MAX2063ETM+T

-40NC to +85NC

48 Thin QFN-EP*

Summary of content (22 pages)

PAGE 1
9-5303; Rev 0; 6/10 Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA Features The MAX2063 high-linearity, dual digital variable-gain amplifier (VGA) operates in the 50MHz to 1000MHz frequency range. Each digital attenuator is controlled as a slave peripheral using either the SPIK-compatible interface or a 5-bit parallel bus with 31dB total adjustment range in 1dB steps.
PAGE 2
MAX2063 Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA ABSOLUTE MAXIMUM RATINGS VCC_AMP_1, VCC_AMP_2, VCC_RG to GND...........-0.3V to +5.5V STA_A_1, STA_A_2, STA_B_1, STA_B_2, PD_1, PD_2, AMPSET to GND ....................................-0.3V to +3.6V DAT, CS, CLK, DA_SP to GND.............................-0.3V to +3.6V D0_1, D1_1, D2_1, D3_1, D4_1, D0_2, D1_2, D2_2, D3_2, D4_2 to GND ...............................-0.3V to +3.6V AMP_IN_1, AMP_IN_2 to GND....................
PAGE 3
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA PARAMETER RF Frequency SYMBOL fRF CONDITIONS MIN (Note 5) TYP 50 MAX UNITS 1000 MHz +5V SUPPLY AC ELECTRICAL CHARACTERISTICS (Typical Application Circuit, VCC = VCC_AMP_1 = VCC_AMP_2 = VCC_RG = +4.75V to +5.25V, attenuators are set for maximum gain, RF ports are driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz ≤ fRF ≤ 500MHz, TC = -40NC to +85NC. Typical values are at maximum gain setting, VCC_ = +5.
PAGE 4
MAX2063 Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA +5V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued) (Typical Application Circuit, VCC = VCC_AMP_1 = VCC_AMP_2 = VCC_RG = +4.75V to +5.25V, attenuators are set for maximum gain, RF ports are driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz ≤ fRF ≤ 500MHz, TC = -40NC to +85NC. Typical values are at maximum gain setting, VCC_ = +5.0V, PIN = -20dBm, fRF = 350MHz, and TC = +25NC, unless otherwise noted.
PAGE 5
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA (Typical Application Circuit, VCC = VCC_AMP_1 = VCC_AMP_2 = VCC_RG = +4.75V to +5.25V, attenuators are set for maximum gain, RF ports are driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz ≤ fRF ≤ 500MHz, TC = -40NC to +85NC. Typical values are at maximum gain setting, VCC_ = +5.0V, PIN = -20dBm, fRF = 350MHz, and TC = +25NC, unless otherwise noted.
PAGE 6
Typical Operating Characteristics (Typical Application Circuit, VCC = VCC_AMP_1 = VCC_AMP_2 = VCC_RG = 5V, attenuators are set for maximimum gain, RF ports are driven from 50ω sources, AMPSET = 0, PD_1 = PD_2 = 0, PIN = -20dBm, fRF = 350MHz, TC = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. VCC GAIN vs. RF FREQUENCY 22 140 22 GAIN (dB) TC = +25°C 150 MAX2063 toc03 24 MAX2063 toc02 TC = -40°C 160 GAIN (dB) SUPPLY CURRENT (mA) TC = -40°C GAIN vs.
PAGE 7
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA ATTEN 31dB -60 -70 -80 450 650 850 1050 40 30 20 10 0 -10 65 55 45 35 25 -30 50 250 450 650 850 50 1050 CH1 TO CH2 35 7 6 5 4 25 8 6 450 650 850 1050 4 TC = -40°C 3 50 RF FREQUENCY (MHz) 250 450 650 850 1050 650 850 1050 OUTPUT P1dB vs. RF FREQUENCY MAX2063 toc15 TC = -40°C 450 22 18 TC = +85°C 16 VCC = 5.25V 20 OUTPUT P1dB (dBm) OUTPUT P1dB (dBm) 250 RF FREQUENCY (MHz) OUTPUT P1dB vs.
PAGE 8
Typical Operating Characteristics (continued) (Typical Application Circuit, VCC = VCC_AMP_1 = VCC_AMP_2 = VCC_RG = 5V, attenuators are set for maximimum gain, RF ports are driven from 50ω sources, AMPSET = 0, PD_1 = PD_2 = 0, PIN = -20dBm, fRF = 350MHz, TC = +25°C, unless otherwise noted.) TC = +85°C 25 35 VCC = 4.75V 30 650 850 1050 250 RF FREQUENCY (MHz) 650 850 0 1050 50 TC = -40°C POUT = 3dBm VCC = 5.25V 2ND HARMONIC (dBc) TC = +85°C 40 VCC = 5.00V 50 VCC = 4.
PAGE 9
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA OUTPUT IP2 (dBm) TC = +25°C 40 TC = -40°C 30 TC = +85°C 55 VCC = 5.00V 50 VCC = 4.75V 40 250 450 650 850 1050 250 50 RF FREQUENCY (MHz) 450 650 850 4 8 16 20 24 28 0 -1 GAIN (dB) TC = -40°C TC = +25°C -3 MAX2063 toc30 -1 12 ATTENUATOR STATE (dB) GAIN vs. RF FREQUENCY (ATTENUATOR ONLY) MAX2063 toc29 0 -4 0 1050 RF FREQUENCY (MHz) GAIN vs.
PAGE 10
Typical Operating Characteristics (Typical Application Circuit, VCC = VCC_AMP_1 = VCC_AMP_2 = VCC_RG = 3.3V, attenuators are set for maximimum gain, RF ports are driven from 50ω sources, AMPSET = 1, PD_1 = PD_2 = 0, PIN = -20dBm, fRF = 350MHz, TC = +25°C, unless otherwise noted.) VCC = 3.3V TC = -40°C 22 GAIN (dB) 90 20 TC = +85°C 80 18 70 VCC = 3.3V 20 VCC = 3.135V 18 TC = +85°C 3.2 3.3 3.4 16 3.
PAGE 11
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA 14 VCC = 3.465V 10 450 650 850 10 6 1050 250 50 RF FREQUENCY (MHz) 450 MAX2063 toc41 34 TC = -40°C LSB, USB 32 OUTPUT IP3 (dBm) 40 VCC = 3.465V VCC = 3.3V VCC = 3.135V VCC = 3.3V POUT = 0dBm/TONE RF = 350MHz 450 650 850 26 8 12 16 20 24 50 28 250 450 650 850 1050 RF FREQUENCY (MHz) 2ND HARMONIC vs. ATTENUATOR STATE 80 MAX9888 toc44 VCC = 3.465V 50 VCC = 3.3V 40 VCC = 3.
PAGE 12
Typical Operating Characteristics (continued) (Typical Application Circuit, VCC = VCC_AMP_1 = VCC_AMP_2 = VCC_RG = 3.3V, attenuators are set for maximimum gain, RF ports are driven from 50ω sources, AMPSET = 1, PD_1 = PD_2 = 0, PIN = -20dBm, fRF = 350MHz, TC = +25°C, unless otherwise noted.) 3RD HARMONIC vs. RF FREQUENCY MAX2063 toc46 VCC = 3.3V POUT = 3dBm TC = -40°C TC = +25°C 60 50 40 250 VCC = 3.465V VCC = 3.135V 60 VCC = 3.
PAGE 13
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA GND AMP_IN_2 PD_2 GND AMP_OUT_2 REG_OUT AMPSET AMP_OUT_1 GND PD_1 AMP_IN_1 GND TOP VIEW 36 35 34 33 32 31 30 29 28 27 26 25 VCC_AMP_1 37 GND 38 GND 39 GND 40 GND 41 D4_1 42 24 ACTIVE BIAS AMP ACTIVE BIAS AMP EXPOSED PAD MAX2063 VCC_AMP_2 23 GND 22 GND 21 DA_SP 20 GND 19 D4_2 18 D_ATT_OUT_2 D_ATT_OUT_1 43 D3_1 44 17 D3_2 D2_1 45 16 D2_2 15 D1_2 14 D0_2 13 GND 7 8 9 10 1
PAGE 14
MAX2063 Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA Pin Description (continued) PIN 14 NAME 8 VCC_RG 9 STA_B_2 10 STA_A_2 FUNCTION Regulator Supply Input. Connect to a 3.3V or 5V external power supply. VCC_RG powers all circuits except for the driver amplifiers. Bypass with a 10nF capacitor as close as possible to the pin.
PAGE 15
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA The MAX2063 high-linearity digital VGA is a generalpurpose, high-performance amplifier designed to interface with 50I systems operating in the 50MHz to 1000MHz frequency range. Each channel of the device integrates one digital attenuator to provide 31dB of total gain control, as well as a driver amplifier optimized to provide high gain, high output IP3, low NF, and low power consumption.
PAGE 16
MAX2063 Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA D0:D7 1st Digital Attenuator Programming Reserved. Set to logic 0. D28:D35 2nd Digital Attenuator Programming Reserved. Set to logic 0.
PAGE 17
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA FUNCTION BIT D55 (MSB) 2nd Digital Attenuator State 4 2nd Digital Attenuator State 3 2nd Digital Attenuator State 2 2nd Digital Attenuator State 1 MAX2063 Table 3.
PAGE 18
MAX2063 Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA Table 3. SPI Data Format (continued) FUNCTION BIT 1st Digital Attenuator State 1 DESCRIPTION D12 16dB step (MSB of the 5-bit word used to program the digital attenuator state 1) D11 8dB step D10 4dB step D9 2dB step D8 1dB step D7 D6 D5 Reserved D4 D3 Bits D[7:0] are reserved. Set to logic 0.
PAGE 19
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA The pin configuration of the device is optimized to facilitate a very compact physical layout of the device and its associated discrete components. The exposed pad (EP) of the device’s 48-pin thin QFN-EP package provides a low thermal-resistance path to the die. It is important that the PCB on which the device is mounted be designed to conduct heat from the EP.
PAGE 20
MAX2063 Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA Table 7. Typical Application Circuit Component Values 20 DESIGNATION QTY DECRIPTION COMPONENT SUPPLIER C1, C2, C6, C8, C9, C13 6 1000pF capacitors (0402) Murata GRM1555C1H102J Murata North America Electronics, Inc. C4, C7, C11, C14, C16 5 10nF capacitors (0402) Murata GRM155R71E103K Murata North America Electronics, Inc.
PAGE 21
Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA RF OUTPUT 1 C7 C6 RF OUTPUT 2 C14 VCC C13 L1 L2 GND GND AMP_IN_2 PD_2 GND AMP_OUT_2 REG_OUT AMPSET AMP_OUT_1 GND PD_1 MAX2063 18 17 44 45 DIGITAL ATTENUATOR 1 46 47 16 DIGITAL ATTENUATOR 2 SPI 15 14 13 48 2 1 GND + 3 4 5 C1 RF INPUT 1 6 7 8 9 GND C11 C9 GND DA_SP GND D4_2 D_ATT_OUT_2 D3_2 D2_2 D1_2 D0_2 GND 10 11 12 C8 VCC C16 Chip Information PROCESS: SiGe BiCMOS 19 VCC VCC_AMP_2 G
PAGE 22
MAX2063 Dual 50MHz to 1000MHz High-Linearity, Serial/Parallel-Controlled Digital VGA Revision History REVISION NUMBER REVISION DATE 0 6/10 DESCRIPTION Initial release PAGES CHANGED — 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.