Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsMAX2090ETP+

MAX2090

50MHz to 1000MHz Analog VGA and Power

Detector with Optional AGC Loop

�� Maxim Integrated Products 1

General Description

The MAX2090 high-linearity analog variable-gain ampli-

fier (VGA) is a monolithic SiGe BiCMOS attenuator,

amplifier, and RMS detector designed to interface with

50I systems operating in the 50MHz to 1000MHz

frequency range. Either the on-board RMS power

detector or an external analog control voltage controls

the analog attenuator. The device features a gain range

of -11.5dB to +25.5dB, a noise figure of 4dB, OIP3 linear-

ity of +38dBm, and a wide RF bandwidth. Each of these

features makes the device an ideal VGA for numerous

receiver and transmitter applications. In addition, the

device operates from a single +5.0V supply.

This device is available in a compact 20-pin TQFN pack-

age (5mm x 5mm) with an exposed pad. Electrical per-

formance is guaranteed over the extended temperature

range, from T

= -40NC to +95NC.

Applications

Point-to-Point Receivers and Transmitters

RF/IF Variable-Gain Stages

Temperature-Compensation Circuits

Cellular Applications

WiMAX™ Applications

LTE Applications

Fixed Broadband Wireless Access

Wireless Local Loop

Military Systems

Benefits and Features

S Wideband Coverage

 50MHz to 1000MHz RF Frequency Range

S High Linearity

 +38dBm OIP3 (Detector Disabled, 100MHz)

 +37.3dBm OIP3 (Detector Enabled, 100MHz)

 +17.5dBm Output -1dB Compression Point

(100MHz)

S 25.5dB Gain

S 37dB Attenuator Range

S 4dB Noise Figure (Includes Attenuator Insertion

Loss)

S 0.25dB Gain Variation Over 100MHz Bandwidth

S Analog Attenuator Controlled with External

Voltage or On-Chip RMS Power Detector

S Power Level Set Capable Using On-Chip RMS

Detector in Closed-Loop Mode

S Power Detector Alarm Circuit with Adjustable

Threshold

S Extended +4.75V to +5.8V Supply Range

S Lead(Pb)-Free Package

S Power-Down Capabilities

19-6034; Rev 0; 9/11

Ordering Information appears at end of data sheet.

WiMAX is a trademark of WiMAX Forum.

For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX2090.related

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Summary of content (19 pages)

PAGE 1
9-6034; Rev 0; 9/11 MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop General Description Benefits and Features The MAX2090 high-linearity analog variable-gain amplifier (VGA) is a monolithic SiGe BiCMOS attenuator, amplifier, and RMS detector designed to interface with 50I systems operating in the 50MHz to 1000MHz frequency range. Either the on-board RMS power detector or an external analog control voltage controls the analog attenuator.
PAGE 2
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop ABSOLUTE MAXIMUM RATINGS VCC_A, VCC_RF. .......................................................-0.3V to +6V RF_IN, RF_OUT......................................... -0.3V to (VCC + 0.3V) R_BIAS, ALM_THRES, PLVLSET, GCTRL, FLTR....................................................-0.3V to +3.6V CTRL1, CTRL2......................................................-0.3V to +3.6V ALM...........................................................
PAGE 3
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop DC ELECTRICAL CHARACTERISTICS (continued) (Typical Application Circuit, VCC = 4.75V to 5.8V, VGND = 0V, and TC = -40NC to +95NC. Typical values are at VCC = 5.0V, VPLVLSET = 1.65V, and TC = +25NC, unless otherwise noted.) MIN TYP MAX UNITS PLVLSET Maximum Control Voltage PARAMETER SYMBOL 2.3 2.4 2.5 V ALM_THRES Input Resistance 90 135 ALM_THRES Input Voltage Range CONDITIONS (Note 5) 0 ALM Output Logic 1 3.
PAGE 4
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop AC ELECTRICAL CHARACTERISTICS (continued) (Typical Application Circuit with analog attenuator set to minimum attenuation, VCC = 4.75V to 5.8V, fRF = 350MHz, -40NC < TC < +95NC, and RF ports are connected to 50I sources, unless otherwise noted. Typical values are at TC = +25NC, VCC = 5.0V, PRF_IN = -25dBm, VPLVLSET = 2.5V, CTRL1 = 0, CTRL2 = 1.
PAGE 5
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop AC ELECTRICAL CHARACTERISTICS (continued) (Typical Application Circuit with analog attenuator set to minimum attenuation, VCC = 4.75V to 5.8V, fRF = 350MHz, -40NC < TC < +95NC, and RF ports are connected to 50I sources, unless otherwise noted. Typical values are at TC = +25NC, VCC = 5.0V, PRF_IN = -25dBm, VPLVLSET = 2.5V, CTRL1 = 0, CTRL2 = 1.
PAGE 6
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Typical Operating Characteristics (Typical Application Circuit with analog attenuator set to minimum attenuation (VPLVLSET = 2.5V), VCC = 5.5V, TC = +25NC, fRF_IN = 350MHz, PRF_IN = -25dBm, RSOURCE = RLOAD = 50I, CTRL1 = 0, CTRL2 = 1, ALM_THRES = ALM = open, unless otherwise noted.) 80 TC = +25°C 25 24 TC = +95°C 25 24 TC = -40°C 23 4.90 5.05 5.20 5.35 5.50 5.65 22 5.80 22 50 250 VCC (V) 20 GAIN (dB) 1.0V 1.
PAGE 7
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Typical Operating Characteristics (continued) (Typical Application Circuit with analog attenuator set to minimum attenuation (VPLVLSET = 2.5V), VCC = 5.5V, TC = +25NC, fRF_IN = 350MHz, PRF_IN = -25dBm, RSOURCE = RLOAD = 50I, CTRL1 = 0, CTRL2 = 1, ALM_THRES = ALM = open, unless otherwise noted.) OUTPUT MATCH vs.
PAGE 8
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Typical Operating Characteristics (continued) (Typical Application Circuit with analog attenuator set to minimum attenuation (VPLVLSET = 2.5V), VCC = 5.5V, TC = +25NC, fRF_IN = 350MHz, PRF_IN = -25dBm, RSOURCE = RLOAD = 50I, CTRL1 = 0, CTRL2 = 1, ALM_THRES = ALM = open, unless otherwise noted.) OUTPUT P1dB vs.
PAGE 9
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Typical Operating Characteristics (continued) (Typical Application Circuit with analog attenuator set to minimum attenuation (VPLVLSET = 2.5V), VCC = 5.5V, TC = +25NC, fRF_IN = 350MHz, PRF_IN = -25dBm, RSOURCE = RLOAD = 50I, CTRL1 = 0, CTRL2 = 1, ALM_THRES = ALM = open, unless otherwise noted.) 2ND HARMONIC vs. ATTENUATOR SETTING 60 VCC = 5.00V 450 MAX2090 toc21 TC = +25°C 80 70 TC = +95°C 650 850 60 40 1050 0.600 1.
PAGE 10
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Typical Operating Characteristics (continued) (Typical Application Circuit with analog attenuator set to minimum attenuation (VPLVLSET = 2.5V), VCC = 5.5V, TC = +25NC, fRF_IN = 350MHz, PRF_IN = -25dBm, RSOURCE = RLOAD = 50I, CTRL1 = 0, CTRL2 = 1, ALM_THRES = ALM = open, unless otherwise noted.) 60 60 OIP2 (dBm) OIP2 (dBm) VCC = 5.00V 50 fRF = 350MHz POUT = 0dBm/ TONE TC = -40°C 1.5 fRF = 350MHz 1.0 50 VCC = 5.
PAGE 11
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Typical Operating Characteristics (continued) (Typical Application Circuit with analog attenuator set to minimum attenuation (VPLVLSET = 2.5V), VCC = 5.5V, TC = +25NC, fRF_IN = 350MHz, PRF_IN = -25dBm, RSOURCE = RLOAD = 50I, CTRL1 = 0, CTRL2 = 1, ALM_THRES = ALM = open, unless otherwise noted.) RF OUTPUT POWER vs. RF INPUT POWER (CLOSED LOOP) TC = -40°C -17.5 TC = +95°C TC = +25°C -18.0 TC = -40°C -8.0 -8.
PAGE 12
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Functional Block Diagram GND GND GND ALM GND 15 14 13 12 11 ALM_THRES 16 CTRL1 17 10 GND 9 GND 8 DET_VOUT 7 FLTR 6 GCTRL MAX2090 R VO DET_IN 18 X2 RF_OUT 19 VCC_RF 20 + EXPOSED PAD 1 2 3 4 5 R_BIAS PLVLSET CTRL2 VCC_A RF_IN �� Maxim Integrated Products 12
PAGE 13
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop GND GND ALM GND TOP VIEW GND Pin Configuration 15 14 13 12 11 ALM_THRES 16 10 GND CTRL1 17 9 GND DET_IN 18 8 DET_VOUT RF_OUT 19 7 FLTR 6 GCTRL MAX2090 3 4 5 VCC_A RF_IN 2 CTRL2 1 PLVLSET + EXPOSED PAD R_BIAS VCC_RF 20 TQFN-EP (5mm x 5mm) Pin Description PIN NAME 1 R_BIAS 2 PLVLSET 3 CTRL2 Functional Control Bit (see Table 1) 4 VCC_A Power-Supply Input.
PAGE 14
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Pin Description (continued) PIN NAME FUNCTION 12 ALM Alarm Logic Output. The output is high when the RF_IN power is above the alarm threshold. The output is low when the RF_IN power is below the alarm threshold. The alarm threshold is set by the ALM_THRES pin. See the Alarm Operation section for details. 16 ALM_THRES 17 CTRL1 Functional Control Bit (see Table 1) 18 DET_IN Power Detector Input.
PAGE 15
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop value between 0 and 2.5V, such that the desired output power is present at DET_IN (see the Typical Application Circuit). As PLVLSET increases, the output power also increases at a typical rate of 17.6dB/V. The detector consists of a linear-in-dB VGA followed by an X2 detector circuit that produces mean-square DC output on the FLTR pin.
PAGE 16
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Table 3. Typical Application Circuit Component Values (continued) MODE OF OPERATION COMPONENT VGA ONLY C16 CLOSED ALC OPEN ALC VALUE SIZE SUPPLIER DESCRIPTION √ √ 0.01FF 0402 Murata X7R dielectric L1 √ √ √ 330nH 0603 Coilcraft Ferrite LS series 5% tolerance R1 √ √ √ 1.78kI 0402 Panasonic 1% tolerance R2, R3 √ √ 84.5I 0402 Panasonic 1% tolerance R4 √ √ 1.
PAGE 17
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop 15 C16 ALM_THRES CTRL1 C7 DET_IN 14 GND ALM GND GND GND Typical Application Circuit 12 13 11 10 16 9 17 GND GND MAX2090 R VO 18 8 DET_VOUT X2 R3 R4 C4 RF_OUT 7 19 FLTR C6 R2 VCC_RF 20 EXPOSED PAD + 1 6 GCTRL C8 R5 C5 RF_OUT C9 C3 5 VCC C1 R1 C2 C14 RF_IN R11 RF_IN 4 VCC_A 3 CTRL2 PLVLSET L1 R_BIAS VCC 2 Package Information For the latest package outline information and la
PAGE 18
MAX2090 50MHz to 1000MHz Analog VGA and Power Detector with Optional AGC Loop Revision History REVISION NUMBER REVISION DATE 0 9/11 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.
PAGE 19
Mouser Electronics Related Product Links 700-MAX2090ETP+ - Maxim IC MAX2090ETP+