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uaa2082
DATASHEETS
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Philips uaa2082 DATASHEETS

INTEGRATED CIRCUITS
DATA SH EET
UAA2082
Advanced pager receiver
Product specification Supersedes data of 1996 Jan 15 File under Integrated Circuits, IC03
2000 Nov 15
Philips Semiconductors Product specification
Advanced pager receiver UAA2082

FEATURES

• Wide frequency range: VHF, UHF and 900 MHz bands
• High sensitivity
• High dynamic range
• Electronically adjustable filters on chip
• Suitable for data rates up to 2400 bits/s
• Wide frequency offset and deviation range
• Fully POCSAG compatible FSK receiver
• Power on/off mode selectable by the chip enable input
• Low supply voltage; low power consumption
• 1-cell battery-low detection circuit
• High integration level
• Interfaces directly to the PCA5000A, PCF5001 and
PCD5003 POCSAG decoders.

APPLICATIONS

• Wide area paging
• On-site paging
• Telemetry
• RF security systems
• Low bit-rate wireless data links.

GENERAL DESCRIPTION

The UAA2082 is a high-performance low-power radio receiver circuit primarily intended for VHF, UHF and 900 MHz pager receivers for wide area digital paging systems, employing direct FM non-return-to-zero (NRZ) frequency shift keying (FSK).
The receiver design is based on the direct conversion principle where the input signal is mixed directly down to the basebandby a local oscillator on the signal frequency. Two complete signal paths with signals of 90° phase difference are required to demodulate the signal. All channel selectivity is provided by the built-in IF filters. The circuit makes extensive use of on-chip capacitors to minimize the number of external components.
The battery monitoring circuit has an external sense input and a 1.1 V detection threshold for easy operation in a single-cell supply concept.
The UAA2082 is designed to operate together with the PCA5000A, PCF5001 or PCD5003 POCSAG decoders, which contain a digital input filter for optimum call success rate.

ORDERING INFORMATION

TYPE
NUMBER
UAA2082H LQFP32 plastic low profile quad flat package; 32 leads; body 7 × 7 × 1.4 mm SOT358-1 UAA2082U 28 pads naked die; see Fig.7
NAME
Description
PACKAGE
VERSION
Philips Semiconductors Product specification
Advanced pager receiver UAA2082

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
I
P
I
P(off)
P
i(ref)
P
i(mix)
V
th
T
amb
supply voltage 1.9 2.05 3.5 V supply current 2.3 2.7 3.2 mA stand-by current −−3µA RF input sensitivity BER ≤3⁄
data rate 1200 bits/s; T
f
i(RF)
f
i(RF)
mixer input sensitivity BER ≤3⁄
; ± 4 kHz deviation;
100
=25°C
amb
= 173 MHz −−126.5 −123.5 dBm = 470 MHz −−124.5 −121.5 dBm
; f
100
= 470 MHz;
i(RF)
−−115.0 −110.0 dBm
±4 kHz deviation;
detection threshold for battery LOW indicator
data rate 1200 bits/s; T T
=25°C 1.05 1.10 1.15 V
amb
T
= −10 to +70 °C 1.03 1.10 1.17 V
amb
amb
=25°C
operating ambient temperature −10 − +70 °C
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2000 Nov 15 4
V
bias(osc)
C20
C18
1 nF
560
nH
1 nF
R5
1.5 kΩ
L9
C16
13 to
50 pF
C17
15 pF
XTAL
GND3
L8
R6
27
22 kΩ
303132
27 pF
nH
SENSE
28
C15
R7 100 Ω
R4
2.2 kΩ
2627
C14 1 nF
C13 10 µF
C19 1 nF
33 nHL633 nH
25
L7
C12 5 to 20 pF
R3
1.5 kΩ
V
P

BLOCK DIAGRAMS (173 MHz)

Philips Semiconductors Product specification
Advanced pager receiver UAA2082
BLI
to
decoder
IF testpoints
V
i(RF)
Pins 9, 17, 23 and 29 are not connected.
DO RE
C1
8.2 pF
L1 43 nH
C2
8.2 pF
TPI TPQ
C3
5 to
20 pF
1TS
2
3 4
5 6
7
8
CRYSTAL
OSCILLATOR
LIMITER
Q
DEMO-
DULATOR
LIMITER
I
RF pre-amplifier
10
GND1
330
R1
Ω
GYRATOR
FILTER
GYRATOR
FILTER
11
V
P
BATTERY
LOW
INDICATOR
12
L2
22 nH
ACTIVE
FILTER
ACTIVE
FILTER
13 14
L3
22 nH
C4 1 nF
FREQUENCY
MULTIPLIER
low noise
amplifier Q
low noise
amplifier I
BAND GAP
REFERENCE
V
P
C5 1 nF
C6
5 to
20 pF
V
ref
C10
22 pF
C7
8.2 pF C8
8.2 pF
MIXER I
15 16
MIXER Q
C11
22 pF
C9
8.2 pF
UAA2082H
24 22
R2 47
21
20
19
18
L4
150
nH
kΩ
GND2
L5 150 nH
MLC222
Fig.1 Block, test and application diagram drawn for LQFP32; f
handbook, full pagewidth
= 172.941 MHz.
i(RF)
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2000 Nov 15 5
V
bias(osc)
C20
decoder
BLI
DO
RE
C18 1 nF
28
27 26 25
560 nH
1 nF
R5
1.5 kΩ
L9
C16 13 to 50 pF
TS
XTAL
C17
15 pF
R6 22 kΩ
GND3
222324
L8 27 nH
21
C15 27 pF
SENSE
R7 100 Ω
R 4
2.2 kΩ
1920
C14 1 nF
C13 10 µF
R3
1.5 kΩ
L7
33 nHL633 nH
C12
5 to 20 pF
C 19 1 nF
V
47 kΩ
16 151718
P
R2
Philips Semiconductors Product specification
Advanced pager receiver UAA2082
BAND GAP
REFERENCE
V
12 3
TPI TPQ
IF testpoints
P
DEMODULATOR
8.2 pF
V
ref
C1
V
i(RF)
LIMITER
I
C3
5 to 20 pF
L1
43 nH
CRYSTAL
OSCILLATOR
BATTERY
LOW
INDICATOR
LIMITER
Q
RF pre-amplifier
54
330
R1
Ω
C2
8.2 pF
GYRATOR
FILTER
GYRATOR
FILTER
6
GND1
V
P
7
L3
22 nH
FREQUENCY
MULTIPLIER
UAA2082U
ACTIVE
FILTER
ACTIVE
FILTER
89
L2
22 nH
C4 1 nF
low noise
amplifier
low noise
amplifier
C5 1 nF
5 to 20 pF
Q
I
8.2 pF
C6
8.2 pF
MIXER I MIXER Q
10 11 12 13 14
10 pF 10 pF
C10 C11 C7 C8
C9
8.2 pF
L4 150 nH
GND2
L5 150 nH
MLC223
Fig.2 Block, test and application diagram drawn for naked die; f
handbook, full pagewidth
= 172.941 MHz.
i(RF)
Philips Semiconductors Product specification
Advanced pager receiver UAA2082
Table 1 Tolerances of components shown in Figs 1 and 2 (notes 1 and 2)
COMPONENT
TOLERANCE
(%)
REMARK
Inductances
L1 ±5Q L2, L3, L6, L7 ±20 Q L4, L5 ±10 Q L8 ±20 Q L9 ±10 Q
= 100 at 173 MHz
min
= 50 at 173 MHz; TC = (+25 to +125) × 10-6/K
min
= 30 at 173 MHz; TC = (+25 to +125) × 10-6/K
min
= 30 at 173 MHz; TC = (+25 to +125) × 10-6/K
min
= 30 at 57 MHz; TC = (+25 to +125) × 10-6/K
min
Resistors
-6
R1 to R7 ±2 TC = +50 × 10
/K
Capacitors
-6
C1, C2, C7, C8, C9, C15 ±5TC=(0±30) × 10 C3, C6, C12 − TC = (−750 ±300) × 10 C4, C5, C14, C18, C19, C20 ±10 TC = (0 ±30) × 10 C10, C11 ±5TC=(0±30) × 10
/K; tan δ≤ 30 × 10−4at 1 MHz
-6
/K; tan δ≤50 × 10−4at 1 MHz
-6
/K; tan δ≤10 × 10−4at 1 MHz
-6
/K; tan δ≤21 × 10−4at 1 MHz C13 ±20 C16 − TC = (−1700 ±500) × 10 C17 ±5TC=(0±30) × 10
-6
/K; tan δ≤50 × 10−4at 1 MHz
-6
/K; tan δ≤26 × 10−4at 1 MHz
Notes
1. Recommendedcrystal: f
= 57.647 MHz(crystal with 8 pF load),3rdovertone, pullability >2.75 × 10-6/pF(change
XTAL
in frequency between series resonance and resonance with 8 pF series capacitor at 25 °C), dynamic resistance R1 < 40 Ω, ∆f=±5×10-6 for T
= −10 to +55 °C with 25 °C reference, calibration plus aging tolerance:
amb
−5 × 10-6to +15 × 10-6.
2. Thiscrystal recommendation is based on economic aspects and practical experience. Normally the spreads for R1, pullability and calibration do not show their worst case limits simultaneously in one crystal. In such a rare event, the tuning range will be reduced to an insufficient level.
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2000 Nov 15 7
V
bias(osc)
C20
C18 1 nF
560
nH
1 nF
R5
1.5 kΩ
C16
L9
13 to
50 pF
C17
15 pF
XTAL
GND3
303132
R6 22 kΩ
L8 100 nH
28
10 pF
SENSE
C15 3 to
C14 1 nF
R4
1.2 kΩ
2627
C13 10 µF
C19 1 nF
L7
8 nH
2.5 to 6 pF
25
R3 820 Ω
C12
L6 8 nH
V
P

BLOCK AND TEST DIAGRAMS (470 MHz)

Philips Semiconductors Product specification
Advanced pager receiver UAA2082
BLI
to
decoder
IF testpoints
V
i(RF)
Pins 9, 17, 23 and 29 are not connected.
DO RE
C1
2.7 pF
L1
12.5 nH
C2
2.7 pF
TPI TPQ
C3
2.5 to 6 pF
1TS
2
3 4
5 6
7
8
CRYSTAL
OSCILLATOR
LIMITER
Q
DEMO-
DULATOR
LIMITER
I
RF pre-amplifier
10
GND1
330
R1
Ω
GYRATOR
FILTER
GYRATOR
FILTER
11
V
P
BATTERY
LOW
INDICATOR
12
L2
8 nH
ACTIVE
FILTER
ACTIVE
FILTER
13 14
L3
8 nH
C4 1 nF
FREQUENCY
MULTIPLIER
low noise
amplifier Q
low noise
amplifier I
BAND GAP
REFERENCE
V
P
C5 1 nF
C6
2.5 to 6 pF
V
ref
C10
22 pF
C7
2.7 pF C8
2.7 pF
MIXER I
15 16
MIXER Q
C11
22 pF
C9
2.7 pF
UAA2082H
24 22
R2 47
GND2
L4 40
nH
MLC224
kΩ
L5 40 nH
21
20
19
18
Fig.3 Block, test and application diagram drawn for LQFP32; f
handbook, full pagewidth
= 469.95 MHz.
i(RF)
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2000 Nov 15 8
V
bias(osc)
C20
decoder
BLI
DO
RE
C18 1 nF
560 nH
28
27 26 25
1 nF
R5
1.5 kΩ
L9
C16 13 to 50 pF
TS
XTAL
C17
15 pF
R6 22 kΩ
GND3
222324
L8 100 nH
21
C15 3 to 10 pF
SENSE
C14 1 nF
R 4
1.2 kΩ
1920
C13 10 µF
R3 820 Ω
L7
8 nHL68 nH
C12
2.5 to 6 pF
C 19 1 nF
V
47 kΩ
16 151718
P
R2
Philips Semiconductors Product specification
Advanced pager receiver UAA2082
BAND GAP
REFERENCE
V
12 3
TPI TPQ
IF testpoints
P
DEMODULATOR
2.7 pF
V
ref
C1
V
i(RF)
LIMITER
I
C3
2.5 to 6 pF L1
12.5 nH
CRYSTAL
OSCILLATOR
BATTERY
LOW
INDICATOR
LIMITER
Q
RF pre-amplifier
54
330
R1
Ω
C2
2.7 pF
GYRATOR
FILTER
GYRATOR
FILTER
6
GND1
V
P
7
L3
8 nH
FREQUENCY
MULTIPLIER
UAA2082U
ACTIVE
FILTER
ACTIVE
FILTER
89
L2
8 nH
C4 1 nF
low noise
amplifier
low noise
amplifier
C5 1 nF
C6
2.5 to 6 pF
Q
I
22 pF 22 pF
2.7 pF
2.7 pF
MIXER I MIXER Q
10 11 12 13 14
L4
C10 C11 C7 C8
40 nH
C9
2.7 pF
GND2
L5 40 nH
MLC225
Fig.4 Block, test and application diagram drawn for naked die; f
handbook, full pagewidth
= 469.95 MHz.
i(RF)
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2000 Nov 15 9
V
bias(osc)
C20
C18
1 nF
560
nH
1 nF
R5
1.5 kΩ
C16
L9
13 to
50 pF
C17
15 pF
XTAL
GND3
303132
R6 22 kΩ
L8 100 nH
28
10 pF
SENSE
C15 3 to
C14 1 nF
R4
1.2 kΩ
2627
C13 10 µF
C19 1 nF
L7
8 nH
2.5 to 6 pF
25
C12
R3 820 Ω
L6 8 nH
V
P
Philips Semiconductors Product specification
Advanced pager receiver UAA2082
to
decoder
IF testpoints
BLI DO RE
TPI TPQ
BAND GAP
REFERENCE
V
P
P
FREQUENCY
MULTIPLIER
low noise
amplifier Q
low noise
amplifier I
V
ref
C10
22 pF
C21
C5
5.6 pF
1 nF
C22
5.6 pF
MIXER I
15 16
MIXER Q
C11
22 pF
L10
12.5 nH
UAA2082H
C23
2.5 to 6 pF
24 22
R2 47
GND2
L4 40 nH
MLC226
kΩ
L5 40
nH
21
20
19
18
1TS
2
3 4
5 6
7 8
CRYSTAL
OSCILLATOR
LIMITER
Q
DEMO-
DULATOR
LIMITER
I
RF pre-amplifier
GND1
GYRATOR
FILTER
GYRATOR
FILTER
1110
12
BATTERY
LOW
INDICATOR
13 14
V
i(RF)
ACTIVE
FILTER
ACTIVE
FILTER
V
Fig.5 Mixer input sensitivity test circuit; f
handbook, full pagewidth
= 469.95 MHz.
i(RF)
Philips Semiconductors Product specification
Advanced pager receiver UAA2082
Table 2 Tolerances of components shown in Figs 3, 4 and 5 (notes 1 and 2)
COMPONENT
TOLERANCE
(%)
REMARK
Inductances
L1, L10 ±5Q L2, L3, L6, L7 ±20 Q L4, L5 ±10 Q L8 ±10 Q L9 ±10 Q
= 145 at 470 MHz
min
= 50 at 470 MHz; TC = (+25 to +125) × 10-6/K
min
= 40 at 470 MHz; TC = (+25 to +125) × 10-6/K
min
= 30 at 156 MHz; TC = (+25 to +125) × 10-6/K
min
= 40 at 78 MHz; TC = (+25 to +125) × 10-6/K
min
Resistors
-6
R1 to R6 ±2 TC = +50 × 10
/K
Capacitors
-6
C1, C2, C7, C8, C9 ±5TC=(0±30) × 10 C3, C6, C12, C23 − TC = (−750 ±300) × 10 C4, C5, C14, C18 to C22 ±10 TC = (0 ±30) × 10 C10, C11 ±5TC=(0±30) × 10
/K; tan δ≤30 × 10−4 at 1 MHz
-6
/K; tan δ≤50 × 10−4at 1 MHz
-6
/K; tan δ≤10 × 10−4 at 1 MHz
-6
/K; tan δ≤21 × 10−4 at 1 MHz C13 ±20 C16 − TC = (−1700 ±500) × 10 C17 ±5TC=(0±30) × 10
-6
/K; tan δ≤50 × 10−4at 1 MHz
-6
/K; tan δ≤26 × 10−4at 1 MHz
Notes
1. Recommendedcrystal: f
= 78.325 MHz(crystal with 8 pF load),3rdovertone, pullability >2.75 × 10-6/pF(change
XTAL
in frequency between series resonance and resonance with 8 pF capacitor at 25 °C), dynamic resistance R1 < 30 Ω, ∆f=±5×10-6 for T
= −10 to +55 °C with 25 °C reference, calibration plus aging tolerance:
amb
−5 × 10-6to +15 × 10-6.
2. Thiscrystal recommendation is based on economic aspects and practical experience. Normally the spreads for R1, pullability and calibration do not show their worst case limits simultaneously in one crystal. In such a rare event, the tuning range will be reduced to an insufficient level.
2000 Nov 15 10
Philips Semiconductors Product specification
Advanced pager receiver UAA2082
PINNING (LQFP32)
SYMBOL PIN DESCRIPTION
TS 1 test switch; connection to ground
for normal operation BLI 2 battery LOW indicator output DO 3 data output RE 4 receiver enable input TPI 5 IF test point; I channel TPQ 6 IF test point; Q channel VI1RF 7 pre-amplifier RF input 1 VI2RF 8 pre-amplifier RF input 2 n.c. 9 not connected RRFA 10 external emitter resistor for
pre-amplifier GND1 11 ground 1 (0 V) VO2RF 12 pre-amplifier RF output 2 VO1RF 13 pre-amplifier RF output 1 V
P
14 supply voltage VI2MI 15 I channel mixer input 2 VI1MI 16 I channel mixer input 1 n.c. 17 not connected VI1MQ 18 Q channel mixer input 1 VI2MQ 19 Q channel mixer input 2 GND2 20 ground 2 (0 V) COM 21 gyrator filter resistor; common line RGYR 22 gyrator filter resistor n.c. 23 not connected VO1MUL 24 frequency multiplier output 1 VO2MUL 25 frequency multiplier output 2 RMUL 26 external emitter resistor for
frequency multiplier SENSE 27 battery LOW detector sense input OSC 28 oscillator collector n.c. 29 not connected GND3 30 ground 3 (0 V) OSB 31 oscillator base; crystal input OSE 32 oscillator emitter
handbook, halfpage
1
TS
2
BLI
3
DO
4
RE
5
TPI
6
TPQ
7
VI1RF
8
VI2RF
OSE 32
OSB
31
GND3 30
n.c.
29
OSC 28
RMUL
SENSE 27
26
VO2MUL
25
UAA2082H
9
10
11
12
13
14
15
16
P
VO2RF
VO1RF
V
VI2MI
VI1MI
n.c.
RRFA
GND1
Fig.6 Pin configuration; LQFP32.
24 23 22 21 20 19 18 17
MLC228
VO1MUL
n.c. RGYR COM GND2 VI2MQ VI1MQ n.c.
2000 Nov 15 11
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