AGERE LUCW3011FCL Datasheet

Data Sheet
September 1999

W3011

1 GHz Quadrature Modulator

Features

+ Guaranteed performance at 2.7 V power supply
+ Output power of 3 dBm into 50 Ω load (single-

ended) with 3 V operation

+ Direct RF modulation with or without offset mixer
+ Automatic power control (APC) capability
+ Accurate 90° phase shifter for carrier
+ Double-balanced active mixers minimize carrier

feedthrough (origin offset)

+ Low-current sleep mode

Applications

+ PDC 800 and American digital cellular mobile

terminals

+ Cellular base stations

Description

modulation of an RF carrier by I & Q baseband
inputs. It is particularly suited for use in mobile and
handheld cellular telephones designed to the IS-136
(North American 824 MHz to 849 MHz), PDC
(Japan RCR-STD27 889 MHz to 958 MHz), and
other digital personal-communications standards.

The circuit block diagram is shown in Figure 1. From
two LO signals, LOL and LOH, the offset mixer
produces an internal LO signal, which prevents the
external VCOs from being pulled by the large
transmitted signal. The phase shifter splits the LO
signal into two carriers with 90° phase separation
and equal amplitude.

These signals are fed to the in-phase (I) and
quadrature-phase (Q) double-balanced mixers. The
resulting signals are summed and fed into the output
amplifier. This amplifier can provide 0 dBm linear
output power, minimum, into a 50 Ω load.

The output power can be attenuated up to 50 dB by
applying a control voltage to the APC input.
Nominally, the output power is at maximum
(+3 dBm) with VAPC > 2.2 V, and at minimum
(–50 dBm) with VAPC < 0.8 V.

The W3011 1 GHz Quadrature Modulator is a
monolithic integrated circuit that provides direct

BIAS AND CONTROL

VCC

ENABLE

GROUND

RFOUT

∑

APC

Figure 1. Circuit Block Diagram

A CMOS/TTL-compatible logic input allows the
device to be put into a powerdown mode in which
less than 10 µA of supply current is consumed.

I

–π/4

φ

+π/4

Q

LOH IN

50 Ω

LOL IN

50 Ω

EXTERNAL FILTER
OR
DIRECT LO INPUT

W3011 Data Sheet
1 GHz Quadrature Modulator September 1999

Pin Information

1

IP

2

IN

3

QP
QN

4

10

5
6
7
8
9

TOP

VIEW

APC

GND

ENABLE

GND

LC1
LC2

Figure 2. Pin Configuration

Table 1. Pin Descriptions

Pin Name Function

1 IP Differential Baseband Input (in-phase)
2 IN Differential Baseband Input (in-phase)
3 QP Differential Baseband Input (quad-phase)
4 QN Differential Baseband Input (quad-phase)
5 APC Automatic Power Control dc Input
6 GND dc Ground
7 ENABLE Logic Enable
8 GND dc Ground

9 LC1 Differential LO Input/External Filter
10 LC2 Differential LO Input/External Filter
11 LOHN Differential High-frequency Local Oscillator

Input

12 LOHP Differential High-frequency Local Oscillator

Input

13 LOLN Differential Low-frequency Local Oscillator

Input

14 LOLP Differential Low-frequency Local Oscillator

Input
15 GND dc Ground
16 GND dc Ground
17 RFOUT Open-collector RF Output
18 GND dc Ground
19 VCCRF Positive Power Supply for RF Output Stage
20 VCC Positive Power Supply (nonoutput circuits)

20
19
18
17
16
15
14
13
12
11

VCC
VCCRF
GND
RFOUT
GND
GND
LOLP
LOLN
LOHP

LOHN

2 Lucent Technologies Inc.

Data Sheet W3011
September 1999 1 GHz Quadrature Modulator

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only, as shown in Table 2. Functional operation of the device is not implied at these or
any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute
maximum ratings for extended periods can adversely affect device reliability.

Table 2. Absolute Maximum Ratings

Parameter Symbol Min Max Unit

Ambient Operating Temperature TA –35 85 °C
Storage Temperature Tstg –65 150 °C
Lead Temperature (soldering, 10 s) — — 300 °C
Positive Supply Voltage VCC –0.3 4.5 V
Power Dissipation PD — 650 mW
ac p-p Input Voltage Vp-p –0.3 VCC V
Digital Voltages — –0.3 VCC V

Handling Precautions

Although protection circuitry has been designed into this device, proper precautions should be taken to avoid
exposure to electrostatic discharge (ESD) during handling and mounting. Lucent Technologies Microelectronics
Group employs a human-body model (HBM) and a charged-device model (CDM) for ESD-susceptibility testing
and protection design evaluation. ESD voltage thresholds are dependent on the circuit parameters used to define
the model. No industry-wide standard has been adopted for CDM. However, a standard HBM (resistance =
1500 Ω, capacitance = 100 pF) is widely used and, therefore, can be used for comparison purposes. The HBM
ESD threshold presented here was obtained by using these circuit parameters:

ESD Threshold Voltage

Model Rating

HBM 2000

CDM (corner pins)

CDM (noncorner pins)

500
500

Lucent Technologies Inc. 3

W3011 Data Sheet
1 GHz Quadrature Modulator September 1999

Operating Ranges

The W3011 operating ranges are shown in Table 3. Performance is not guaranteed over the full range of all
conditions possible within this table. However, the table lists the ranges of external conditions in which the
W3011 provides general functionality, which may be useful in specific applications, without risk of permanent
damage. The conditions for guaranteed performance are described in Tables 4 and 5.

Table 3. Operating Ranges

Parameter Min Max Unit

VCC 2.7 3.6 Vdc
Ambient Operating Temperature –35 85 °C
fLO Direct Mode (pins 9 and 10) 800 1000 MHz
PLO Direct Mode (pins 9 and 10) 110 600 mVp-p
Offset Local Oscillator (LOL) Frequency 50 800 MHz
LOL Input Level –15 –3 dBm
UHF Local Oscillator (LOH) Frequency 100 1300 MHz
LOH Input Level –15 –3 dBm

External dc Bias Voltage for I & Q Inputs with

0.282 Vrms ac Input Level:

Differential ac Input 1.2 VCC – 0.7 Vdc

Electrical Characteristics

Table 4. dc and Digital Electrical Specifications

Conditions unless otherwise noted: 2.7 ≤ VCC ≤ 3.3 Vdc; TA = 25 °C ± 3 °C; RL = 50 Ω, VAPC = 2.7 Vdc;
fRF = 900 MHz, fLOL = 130 MHz, fLOH = 1030 MHz, –13 dBm < PLOL, PLOH < –5 dBm;
I – I = 0.4 cos(2πt Ÿ 80 kHz), Q – Q = 0.4 cos(2πt Ÿ 80 kHz – π/2), Vbias of I, I , Q, and Q = 1.22 Vdc.

Parameter Symbol Min Typ Max Unit

Enable Input

Logic High Voltage VIH 0.7 VCC — VCC + 0.4 V
Logic Low Voltage VIL GND – 0.4 — 0.3 VCC V
Logic High Current (VIH = 3.3 V) IIH — — 10 µA
Logic Low Current (VIL = 0.4 V) IIL — — 10 µA
Powerup/down (after ENABLE change) — — — 4 µs

Power Supply Current

Powerdown (ENB = 0) IPDN — 0.3 50 µA
Transmit (ENB = VCC):

(offset mixer on, APC @ max power)

(offset mixer off, APC @ max power)

Transmit (ENB = VCC):

(offset mixer on, APC @ POUT < PMAX – 10
dB)
(offset mixer off, APC @ POUT < PMAX – 10
dB)

ICC(on)
ICC(on)

—
—

—
—

—
—

52
50

46
43

66
64

—
—

mA
mA

mA
mA

4 Lucent Technologies Inc.