RX3400 [ETC]
Low Power ASK Receiver IC; 低功率ASK接收器IC
| 型号： | RX3400 |
| 厂家： | 
ETC |
| 描述： | Low Power ASK Receiver IC |
| 文件： | 总7页 (文件大小：89K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RX3400 Low Power ASK Receiver IC
the wireless IC company
HiMARK Technology, Inc. reserves the right to change the product described in this datasheet. All information con-
tained in this datasheet is subject to change without prior notice. HiMARK Technology, Inc. assumes no responsibility
for the use of any circuits shown in this datasheet.
Description
The RX3400 is a low power ASK receiver IC which is fully compatible with the Mitel
KESRX01 IC and is suitable for use in a variety of low power radio applications including
remote keyless entry. The RX3400 is based on a single-conversion, super-heterodyne
receiver architecture and incorporates an entire phase-locked loop (PLL) for precise local
oscillator generation. In addition, the RX3400 provides an RSSI output.
Features
Extremely low power operation
Low external part count
Receiver input frequency: 290 – 460 MHz
On-chip VCO with integrated PLL using crystal oscillator reference
PLL power down feature
Integrated IF and data filters
RSSI output
SSOP-24 package (0.64 mm pitch)
Applications
Wireless mouse
Video sender remote controller
Car alarm and home security systems
Block Diagram
24
23
22
21
20
19
18
17
16
15
14
13
XTAL2
XTAL1
DF2
DF1
DF0
DO
NC
RSSI
VCO2
VCO1
PD
VSS1
CHARGE
PUMP
CRYSTAL
OSCILLATOR
VCO
DATA FILTER
PFD
÷
64
RSSI
LOG
AMP
PEAK
DETECTOR
MIXER
1-BIT
IF
FILTER
COMPARATOR
LNA
8
ASK
REF
ASK
OUT
IF
DC1
IF
DC2
2
MIX
OUT
MIX
IN
RF
OUT
VSS2
RFIN
PEAK
IFIN
VCC
1
3
4
5
6
7
9
10
11
12
Page 1
March 2001
RX3400
the wireless IC company
Package and Pin Assignment
SSOP-24 (0.64 mm pitch)
1
2
24
IFDC1
IFDC2
IFIN
XTAL2
23 XTAL1
3
22
21
20
19
18
17
16
15
14
DF2
DF1
DF0
DO
4
MIXOUT
VCC
5
6
MIXIN
7
RFOUT
VSS2
NC
8
NC
9
RFIN
VCO2
VCO1
PD
10
11
ASKREF
ASKOUT
PEAK 12
13 VSS1
Dimensions in mm
Dimensions in inch
Symbols
min.
1.35
0.10
—
nom.
1.60
—
max.
1.75
0.25
—
min.
0.053
0.004
—
nom.
0.064
—
max.
0.069
0.010
—
A
A1
A2
b
1.45
0.25
—
0.057
0.010
—
0.20
0.19
8.55
5.80
3.80
—
0.30
0.25
8.75
6.20
4.00
—
0.008
0.007
0.337
0.228
0.150
—
0.012
0.010
0.344
0.244
0.157
—
C
D
E
—
—
—
—
E1
e
—
—
0.64
—
0.025
—
L
0.40
—
1.27
0.10
0.016
—
0.050
0.004
y
—
—
θ
—
—
0°
8°
0°
8°
Page 2
March 2001
RX3400
the wireless IC company
Pin Descriptions
Number
Name
IFDC1
IFDC2
IFIN
Description
Number
13
Name
VSS1
PD
Description
1
2
Ground
IF amplifier feedback
decoupling connections
14
PLL power down
3
IF amplifier input
Mixer output
15
VCO1
VCO2
RSSI
NC
Open collector differential
VCO outputs
4
MIXOUT
VCC
16
5
Nominal 5 V supply
RF mixer input
17
RSSI output
6
MIXIN
RFOUT
VSS2
18
No connection
Loop filter output
7
Open collector LNA output
LNA ground
19
DO
8
20
DF0
Data filter external connec-
tions
9
RFIN
LNA input
21
DF1
10
11
12
ASKREF
ASKOUT
PEAK
Comparator reference level
Comparator output
Peak detector output
22
DF2
23
XTAL1
XTAL2
Crystal oscillator external
connections
24
Page 3
March 2001
RX3400
the wireless IC company
Absolute Maximum Ratings
VSS = VSS1 = VSS2 = 0 V
Parameter
Symbol
VCC
Rating
VSS – 0.5 to VSS + 8.0
–40 to 85
Unit
V
Supply voltage
TOPR
TSTG
TSLD
tSLD
Operating temperature range
Storage temperature range
Soldering temperature range
Soldering time range
°C
°C
°C
s
–55 to 150
255
10
Recommended Operating Conditions
VSS1 = VSS2 = 0 V
Value
Parameter
Symbol
Unit
min.
4.75
290
typ.
5.0
max.
7.0
VCC
fRFIN
TA
Supply voltage range
RF input frequency
Operating temperature
V
460
MHz
–10
25
60
°C
Page 4
March 2001
RX3400
the wireless IC company
Electrical Characteristics
(VCC = 4.75 to 7.0 V, VSS1 = VSS2 = 0 V, TA = –40 to 85 °C unless otherwise noted)
Value
typ.
2.4
Parameter
Symbol
Condition
Unit
min.
max.
ICC,total
ICC,noPLL
αSENS
αSH
VCC = 5 V
Current consumption
3.0
2.4
mA
mA
VCC = 5 V; VPD = 0 V
fRFIN = 434 MHz; 2 KB/s
fRFIN = 434 MHz; 2 KB/s
Current consumption (PLL off)
Sensitivitya
1.8
–103
–100
dBm
dBm
Signal handlingb
-30
Integrated IF filter –3-dB low pass cutoff
frequency
fIF,–3dB
450
550
750
250
KHz
Adjacent channel rejectionc
Peak detector source current
Peak detector leakage current
Charge pump source/sink current
αACR
Ipeak
Ileak
ICP
65
dB
µA
nA
µA
500
±30
VCC
0.5
–
–
VCC
0.5
+
+
VIH,PD
VIL,PD
PD logic HIGH input voltage
V
V
V
V
VSS2
0.5
VSS2
0.5
PD logic LOW input voltage
0.7 ×
VCC
VOH,ASKOUT
Iload = 10 µA
Iload = 10 µA
ASKOUT logic HIGH output voltage
ASKOUT logic LOW output voltage
0.3 ×
VCC
VOL,ASKOUT
a. Sensitivity is defined as the minimum average signal level measured at the input which is necessary to
achieve a bit error rate of 0.01 when the input signal is a return-to-zero (RZ) pulse with an average duty
cycle of 50%. The RF input is assumed to be matched to 50 ohms.
b. Signal handling is defined as the maximum input signal capable of being successfully demodulated. It
is assumed that the input signal is ASK modulated with a minimum extinction ratio of 40 dB. The RF
input is assumed to be matched to 50 ohms.
c. Adjacent channel rejection is defined for an interfering tone αACR [dB] above the receiving threshold
and 10 MHz offset from the carrier giving a 3 dB reduction in sensitivity.
Page 5
March 2001
RX3400
the wireless IC company
Functional Description
The RX3400 ASK receiver IC incorporates an LNA; mixer; PLL-based local oscillator
including VCO, fixed divider (÷ 64), reference crystal oscillator, phase-frequency detector
(PFD), and charge pump; IF filter; logarithmic amplifier; data filter; peak detector; and 1-
bit comparator and is capable of demodulating ASK input signals.
PLL Power-down Function
The PLL portion of the IC can be powered up and down through the control of the PD
input (pin 14). During PLL power down operation, the reference crystal oscillator, fixed
VCO divider, PFD, and charge pump are all shut off and the current consumption of the IC
drops by approximately 600 µA. The VCO circuitry remains on and may be configured to
operate as a buffer amplifier for an external SAW-based oscillator.
1-bit Comparator
The integrated 1-bit comparator operates as a data slicer and “squares up” the data filtered
RSSI output from the logarithmic amplifier. The decision threshold voltage level for the
1-bit comparator is stored on an external capacitor connected to the ASKREF pin.
Page 6
March 2001
RX3400
the wireless IC company
Application Circuit
434 MHz
100 nF
100 nF
6.775 MHz
100 pF 100 pF
1
2
24
23
22
21
20
19
18
17
16
15
14
13
IF DC1
IF DC2
IFIN
XTAL2
XTAL1
DF2
3
220 pF
150 pF
4
MIX OUT
VCC
DF1
DF0
220 pF
5
Vcc 1
6
DO
NC
MIX IN
RF OUT
VSS2
*
27 nH
Vcc 1
1 uF
*
56 pF
7
100 pF
NC
8
ANT
NC
VCO2
VCO1
PD
NC
33 pF
47 KΩ
9
*
100 pF
RFIN
*
56 nH
BB833
27 nH
10
11
12
*
8.2 pF
ASK REF
ASK OUT
PEAK
18 KΩ
33 pF
560 pF
47KΩ
VSS1
4.3KΩ
1 uF
1 MΩ
Data O/P
Power Down
*: mean “Layout Dependent”
Page 7
March 2001
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