MAX9990ETP MAXIM [Maxim Integrated Products], MAX9990ETP Datasheet

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MAX9990ETP

Manufacturer Part Number
MAX9990ETP
Description
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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The MAX9989 and MAX9990 LO buffers provide the high
output (+14dBm to +20dBm) necessary to drive the LO
inputs of high-linearity passive mixers, while offering 40dB
reverse isolation to prevent LO pulling. The MAX9989 is
internally matched for the cellular/GSM bands, and the
MAX9990 is matched for the DCS/PCS/UMTS bands.
The Typical Application Circuit provides a nominal
+17dBm output power with ±1dB variation over supply,
temperature, and input power. With two optional resis-
tors, the output power can be precision set from
+14dBm to +20dBm. The devices offer more than 35dB
main driver output to PLL amp output isolation. Each
device is offered in a 5mm
package with exposed paddle.
19-2486; Rev 0; 7/02
Typical Application Circuit/Pin Configuration appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Cellular/GSM/DCS/PCS/UMTS Base Station
Tx/Rx LO Drives
Coherent Receivers
ISM Wireless LAN
Wireless Local Loop
Local Multipoint Distribution Service
Point-to-Point Systems
________________________________________________________________ Maxim Integrated Products
PRESCALER
RF LO
TO PLL
General Description
5mm 20-pin thin QFN
(+3dBm)
(+7dBm)
OUTPLL
Applications
IN
BIASIN
+14dBm to +20dBm LO Buffers
NETWORK
CONTROL
PLL BUFFER
BIAS
BIAS
Typical Operating Circuit and Block Diagram
INPUT AMP
BIASOUT
MAX9989
MAX9990
OUTPUT AMP
o ±1dB Output Power Variation
o +14dBm to +20dBm Adjustable Output Power
o 40dB Reverse Isolation
o Better Than 35dB Main Driver Output to PLL Amp
o Low Output Noise: -170dBc/Hz at +17dBm
o 110mA Supply Current at +17dBm
o ESD Protection
o Isolated PLL Output (+3dBm)
*EP = Exposed paddle.
MAX9989ETP -40°C to +85°C
MAX9990ETP -40°C to +85°C 20 QFN-EP* 1500 to 2200
Output Isolation
PART
with ±1dB Variation
OUTLO
(+17dBm)
RANGE
TEMP
Ordering Information
RF INPUT
PIN-
PACKAGE
20 Thin
QFN-EP*
IF OUTPUT
Features
FREQUENCY
RANGE (MHz)
700 to 1100
1

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MAX9990ETP Summary of contents

Page 1

... Low Output Noise: -170dBc/Hz at +17dBm o 110mA Supply Current at +17dBm o ESD Protection o Isolated PLL Output (+3dBm) Applications PART MAX9989ETP -40°C to +85°C MAX9990ETP -40°C to +85°C 20 QFN-EP* 1500 to 2200 *EP = Exposed paddle. Typical Operating Circuit and Block Diagram PLL BUFFER MAX9989 MAX9990 OUTPUT AMP ...

Page 2

LO Buffers with ±1dB Variation ABSOLUTE MAXIMUM RATINGS VCC1, VCC2, VCC3, VCCREF to GND .................-0.3V to +6. GND ...................................................-0. OUTLO, OUTPLL to GND...........................-0. REF to GND ......................................................Source/Sink 5mA INBIAS, OUTBIAS to ...

Page 3

AC ELECTRICAL CHARACTERISTICS—MAX9989 (Typical Application Circuit 4.75V to 5.25V, 50Ω environment, +4dBm < -40°C to +85°C, unless otherwise noted. Typical specifications are for +25°C, unless otherwise noted.) (Note 1) A ...

Page 4

LO Buffers with ±1dB Variation (V = 5.0V, nominal bias 900MHz guaranteed operating range, and are provided for reference only.) SUPPLY CURRENT vs. OUTPUT POWER OUTLO 120 115 T = +85°C A ...

Page 5

guaranteed operating range, and are provided for reference only.) SUPPLY CURRENT vs. SUPPLY VOLTAGE 120 115 110 PLL BIASED 105 100 95 PLL NOT BIASED 90 4.5 4.7 4.9 ...

Page 6

LO Buffers with ±1dB Variation (V = 5.0V, nominal bias 1800MHz guaranteed operating range, and are provided for reference only.) SUPPLY CURRENT vs. OUTPUT POWER OUTLO 140 135 130 125 120 T ...

Page 7

guaranteed operating range, and are provided for reference only.) SUPPLY CURRENT vs. SUPPLY VOLTAGE 120 115 PLL BIASED 110 105 PLL NOT BIASED 100 4.5 4.7 4.9 5.1 5.3 ...

Page 8

LO Buffers with ±1dB Variation PIN NAME Ground. Provide 5–10 plated vias from EP to system ground plane for optimal thermal and RF GND 13–18, EP performance Input. Internally matched 50Ω ...

Page 9

Table 1. External Resistor Values for +14dBm to +20dBm Output Power NOMINAL OUTPUT POWER R2 (kΩ) (dBm) +20 1.35 +19 2.2 +18 5.0 +17 Open +16 Open +15 Open +14 Open Table 2. Component Values for Typical Application Circuit COMPONENT ...

Page 10

LO Buffers with ±1dB Variation 5.0V C11 C10 R1 100Ω OUT TO PLL (+3dBm) C9 INPUT FROM FOR THESE VALUES, SEE TABLE 1. FOR CAPACITOR VALUES, SEE TABLE 2. 10 ______________________________________________________________________________________ Typical ...

Page 11

For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ +14dBm to +20dBm LO Buffers with ±1dB Variation Package Information 11 ...

Page 12

LO Buffers with ±1dB Variation (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry ...

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