5-91
5
Preliminary
Product Description
Ordering Information
Typical Applications
Features
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
ü
SiGe HBT
Si CMOS
1
VGC
2
VCC2
3
MOD+
4
MOD-
5
6
7
8
9 LO-
10 LO+
12 NC
13
14
15
16
Gain Control
S
Quad
/2
11 BG OUT
RF9678
W-CDMA TRANSMIT MODULATOR AND IF AGC
• W-CDMA Systems
• EDGE Systems
• CDMA Systems
• TDMA Systems
The RF9678 is an integrated complete quadrature modu-
lator and IF AGC amplifier designed for the transmit sec-
tion of W-CDMA applications. It is designed to modulate
baseband I and Q signals, and amplify the resulting IF
signals while providing 55dB of gain control range. This
circuit is designed as part of RFMD’s single mode
W-CDMA Chipset, which also includes the RF2679
W-CDMA Receive IF AGC and Demodulator. The IC is
manufactured on an advanced Silicon Bi-CMOS process,
and is supplied in a16-pin leadless chip carrier.
• Digitally Controlled Power Down Modes
• 2.7V to 3.3V Operation
• Digital LO Quadrature Divider
• AGC Linearity/Current Consumption Var.
• IF AGC Ampwith55dBGainControl
RF9678
W-CDMA Transmit Modulator and IF AGC
RF9678 PCBA
Fully Assembled Evaluation Board
5
Rev A4 010622
Dimensions in mm.
1.85
1.55 sq.
.60
.24 typ
.75
.50
.23
.13
4 PLCS
.65
.30
4 PLCS
4.00
sq.
2
.35
.23
.65
.05
.01
12°
max
1.00
0.85
.80
.65
NOTES:
Shaded Pin is Lead 1.
1
5
Die thickness allowable: 0.305 mm max.
Package Warpage: 0.05 max.
4
Pin 1 identifier must exist on top surface of package by identification mark or
feature on the package body. Exact shape and size is optional.
3
Dimension applies to plated terminal and is measured between 0.02 mm and
0.25 mm from terminal end.
2
Package Style: LCC, 16-Pin, 4x4
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