Document
XZ1004-QT
Front End GaAs IC 475 - 625 MHz
Features
MoCA Compliant Front-End GaAs IC Linear Power Amplifier Integrated PA Bias Control PA Power Down Mode Transmit/Receive Switch Transmit Power Detector 0/3 dB Transmit Attenuator 0/15 dB Receive Attenuator 3.3 Volt Single Bias Integrated Digital Control Logic Compatible with EN2512 & EN2552 Lead-free 3 mm 16-lead PQFN Package RoHS* Compliant 50 Ω Characteristic Impedance
Description
The XZ1004-QT is an integrated front end GaAs IC for MoCA mid-band RF applications which is fully compatible with Entropic Communications chipset. It is housed in an industry standard 3 mm PQFN package and operates from a single 3.3 V bias. The chip includes a power amplifier, transmit/receive switch, power detector, switched attenuators, bias circuits and digital control circuitry. The transmit path includes a 3 dB switched attenuator and power detector for gain adjustment and linearity optimization. A switched attenuator in the receiver provides a 15 dB gain step. The integrated bias circuit stabilizes transmit amplifier performance over temperature and process variation with power down functionality and optional bias adjustment. The device typically delivers 20 dBm at P1dB and +34 dBm OIP3 across the operating temperature range. The digital inputs control all circuit operating modes and are compatible with Entropic’s MoCA chipsets.
Ordering Information1,2
Part Number
Package
XZ1004-QT-0G0T
Tape and Reel
XZ1004-QT-EV1
Sample Test Board
1. Reference Application Note M513 for reel size information. 2. All sample boards include 5 loose parts.
Functional Block Diagram
Rev. V3
RXOUT Digital Controls
TXIN
Buffer / Driver Buffer / Driver & Logic
Buffer / Driver
TX_ATT
RX Atten Adj
RX_ATT T/R SWITCH
RFI/O
CAL SWITCH
Bias
Detector
Shut Down / Bias Adj
VDD
Det. Det. Atten Adj Out
Pin Configuration
Pin No.
Function
Pin No.
Function
1 RX_ATT 9
VD1
2
TX_RX
10
L_OP
3 CAL 11 I_O
4
TX_IN
12 DET_ATT
5
TX_ATT
13
VD3
6
PWR_DWN
14
VDET
7 VD2 15 RX_OUT
8
BIAS_ADJ
16
RX_ADJ
17 Paddle3
3. The exposed pad centered on the package bottom must be connected to RF and DC ground.
* Restrictions on Hazardous Substances, European Union Directive 2011/65/EU. 1
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Visit www.macom.com for additional data sheets and product information.
For further information and support please visit: https://www.macom.com/support
XZ1004-QT
Front End GaAs IC 475 - 625 MHz
Rev. V3
Pin Description
Pin No.
1 2
3
4 5 6 7 8 9 10 11 12 13 14 15 16
Pin Name
RX_ATT TX_RX
CAL
TX_IN TX_ATT PWR_DWN
VD2 BIAS_ADJ
VD1 L_OP I_O DET_ATT VD3 VDET RX_OUT RX_ADJ
Function
Digital input. A logic high input voltage enables the 15 dB receive attenuator. Digital input. A logic high voltage selects transmit mode, logic low selects receive mode.
Digital input. A logic high selects calibration mode (transmit amplifier output is diverted into the power detector). This pin overrides the TX_RX control input.
Transmit RF input (50 Ω). Digital input. A logic low input voltage enables the 3 dB transmit attenuator. Digital input. A logic low input voltage reduces the ID1 current. Bias supply. Bias adjustment of transmit amplifier using pull-up/down resistor (normally connected to VDD). Amplifier bias supply. External inductor connected to this pin sets the transmit return loss and linearity levels. RF input in the receive mode and RF output in the transmit mode (50 Ω). External RC network connected to this pin sets the power detector sensitivity. Detector bias supply. Power detector output voltage. Used during calibration mode to measure output power. Receive RF output (50 Ω).
External RC network connected to this pin sets the receive attenuator gain step.
2
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Visit www.macom.com for additional data sheets and product information.
For further information and support please visit: https://www.macom.com/support
XZ1004-QT
Front End GaAs IC 475 - 625 MHz
Evaluation Board Layout
Component Values
Component
R2, R4, R9 R5 R6 R7 R8 R10 L1 L2
C1 - C4, C6, C7, C9, C13
C5, C12, C14 C8 C11
Value 3.3 Ω 100 Ω 0Ω 2 kΩ 5.6 Ω 100 kΩ 68 nH 8.2 nH
100 pF
0.1 µF 470 pF 33 pF
Rev. V3
Package 0402 0402 0402 0402 0402 0603 0603 0402
0402
0402 0402 0402
Evaluation Board Schematic
RXOUT
50 Ω TL
Vdet C11 R10
C9 R8 R7
C8 R6
C3
VD3
R5 C7
TXIN
RX_ATT
TX_RX
50 Ω TL
CAL
C1
TX_ATT PWR_SHTDWN
1
C2 C12 R2
C6 50 Ω TL L2
I_O
L1 C4
C13 R9 C14
R4
VD1
C5
3 VD2 Vbias_adj
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Visit www.macom.com for additional data sheets an.