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Do not use for new designs. Use the RF212 device instead (Data Sheet No. 100780)
RF210A and RF210B
Dual-Band, Image-Reject Downconverters For GSM Applications
The RF210A and RF210B devices are available as a dual-band front end for Global System for Mobile Communications (GSM) handset applications. Both of these highly integrated, monolithic devices are optimized for dual-band use in GSM900/DCS1800 or GSM 900/PCS1900 applications. The devices include two Low Noise Amplifiers (LNAs), two image-reject mixers, and two Local Oscillator (LO) buffer amplifiers. The main advantage of the RF210A and RF210B is their ability to provide 30 dB of image rejection for both the GSM900 and the DCS1800 (or PCS1900) bands without requiring the use of a post-LNA image reject filter. A block diagram of the RF210(A/B) is shown in Figure 1. The device package and pin configuration are shown in Figure 2.
Features
* LNA/image-reject mixer for RF to IF conversion * 10 dB (RF210A) or 20 dB (RF210B) switchable gain for GSM * 8 dB (RF210A) or 16 dB (RF210B) switchable gain for DCS/PCS * 30 dB of image rejection. No post-LNA filtering required * High isolation LO input buffer * Differential IF output * High dynamic range * Three-cell battery operation (2.7 to 5 V) * 20-pin Thin Shrink Small Outline Package (TSSOP)
Applications
* Dual-band digital cellular mobile telephony (GSM900/DCS 1800 or GSM900/PCS1900)
NC LNA900GND
LNA900IN 0 90 90 IFOUT
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
MIXVCC MIXGND BYP900 IFOUT+ IFOUTBYP1800 BANDSEL LOIN LOGND ADJMIX
C067
BIASGND LNA900IN
GAINSEL
BIASVCC
IRM
LNAVCC
0 LNA1800IN 90 LOIN
GAINSEL LNA1800IN LNA1800GND
BANDSEL BYP900
BIAS
ENA
BYP1800
C069
Figure 1. RF210(A/B) Block Diagram
Figure 2. RF210(A/B) Pin Configuration - 20-Pin TSSOP
Data Sheet
Conexant
Proprietary Information and Specifications are Subject to Change
Doc. No. 100775A October 20, 1999
RF210(A/B)
Image-Reject Downconverter
Technical Description
The RF210(A/B) dual-band, image-reject downconverters implement the front-end functions of a dual-band superheterodyne receiver. These devices consist of two receive paths, one for GSM900 and the other for DCS1800 (or PCS1900). Each receive path contains an LNA and an imagereject mixer. The IF and LO ports are common to both receive paths. The image-reject mixers can provide 30 dB of image rejection for both the GSM900 and the DCS1800 (or PCS1900) bands without using any post-LNA image reject filters. The LNA/mixer combination has a switchable gain. The RF210A and RF210B both have 22 dB of gain in the high gain mode. For the RF210A, the gain is reduced by 10 dB (GSM band) and by 8 dB (DCS/PCS band) in the low gain mode. For the RF210B, the gain is reduced by 20 dB (GSM band) and by 16 dB (DCS/PCS band) in the low gain mode. The gain mode is selected using the GAINSEL pin (Pin 7). Low gain mode is selected by driving the GAINSEL signal high; high gain mode is selected by driving the signal low. In addition, small adjustments
of the mixer gain can be accomplished by varying the quiescent current on the ADJMIX pin (Pin 11). This pin can be connected to VCC or ground through resistors. The current will increase if the pin is connected to GND and decrease if connected to VCC. For optimal performance, this pin should be left unconnected. The band of operation for RF210(A/B) is selected by the BANDSEL signal on Pin 14. It switches the receive path between GSM900 and DCS1800 (or PCS1900) bands. The device can operate from a three-cell battery pack (2.7 V to 5.0 V). Standby mode current is extremely low at 20 A, which maximizes handset standby time. The signal pin assignments and functional pin descriptions are found in Table 1. The absolute maximum ratings of the RF210(A/B) are provided in Table 2, the operating conditions are specified in Table 3, and electrical specifications are provided in Table 4. Figure 3 shows the diagram for a typical application circuit using the RF210(A/B) downconverter. Figure 4 provides the package dimensions for the 20-pin TSSOP device and Figure 5 provides the tape and reel dimensions.
Table 1. RF210(A/B) Signal Description Pin #
1 2 3 4 5 6 7 8 9 10 NC LNA900GND BIASGND LNA900IN BIASVCC LNAVCC GAINSEL LNA1800IN LNA1800GND ENA
Name
No connect
Description
900 MHz LNA ground Bias ground 900 MHz LNA input Bias supply LNA supply LNA gain select 1800 MHz LNA input 1800 MHz LNA ground Device enable (active high)
Pin #
11 12 13 14 15 16 17 18 19 20
Name
ADJMIX LOGND LOIN BANDSEL BYP1800 IFOUT- IFOUT+ BYP900 MIXGND MIXVCC
Description
Mixer bias adjust pin LO input ground LO input Band selection pin Bypass capacitor for 1800 MHz band Mixer output (negative) Mixer output (positive) Bypass capacitor for 900 MHz band Mixer ground Mixer supply
Table 2. Absolute Maximum Ratings Parameter
Storage Temperature LNA Input Power Supply Voltage (VCC) Input Voltage Range -0.3 -0.3
Minimum
-40
Maximum
+125 +5 +6 Vcc
Units
C dBm V V
2 October 20, 1999
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Proprietary Information and Specifications are Subject to Change
100775A
Image-Reject Downconverter
RF210(A/B)
Table 3. RF210(A/B) Recommended Operating Conditions Parameter
Supply Voltage Operating Temperature
Min
2.7 -30
Typical
3.0 +25
Max
5.0 +85
Units
V C
Table 4. RF210(A/B) Electrical Specifications (1 of 2)
(TA = 25 C, Vcc = 3.0 V, fIF = 400 MHz, Plo = -10 dBm)
Parameter
Supply current: Enable mode Sleep mode RF Input frequency IF frequency LO frequency LO input power LO to RF input isolation Input impedance Gain: High gain (RF210A and RF210B) Low gain (10 dB attenuation, RF210A) Low gain (20 dB attenuation, RF210B) Gain variation vs. Frequency Gain step tracking error Noise figure: High gain Low gain (12 dB gain, RF210A) Low gain (2 dB gain, RF210B) High gain (Note 1) Input 1 dB compression point Input third order intercept point IF shunt resistance/side Spurious response: 2(RF) x 2(LO) and 3(RF) x 3(LO) (Note 2): Image rejection
Test Condition
GSM900 Mode, BANDSEL = 0 ENA = 1 ENA = 0
Min
Typical
Max
Units
38 10 935 350 1285 -10 30 400 960 450 1410
mA A MHz MHz MHz dBm dB dB dB dB dB dB
LNA900IN = 950 MHz GAINSEL = 0 GAINSEL = 1 GAINSEL = 1
40 - j50 22 12 2 0.5
1 0.5
No blocker, GAINSEL = 0 GAINSEL = 1 GAINSEL = 1 -28 dBm blocker @ 915 MHz, GAINSEL = 0 -25 -17 400 Interferer input = -75 dBm 35
3.3 9.0 17 3.9
3.9 11 19
dB dB dB dB dBm dBm
500 -45
600
dB dB
100775A
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Proprietary Information and Specifications are Subject to Change
3 October 20, 1999
RF210(A/B)
Image-Reject Downconverter
Table 4. RF210(A/B) Electrical Specifications (2 of 2)
(TA = 25 C, Vcc = 3.0 V, fIF = 400 MHz, Plo = -10 dBm)
Parameter
Supply current: Enable mode Sleep mode RF input frequency IF frequency LO frequency LO to RF input isolation Input impedance Gain: High gain (RF210A and RF210B) Low gain (8 dB attenuation, RF210A) Low gain (16 dB attenuation, RF210B) Gain variation vs. Frequency Gain step tracking error Noise figure: High gain (19 dB gain, RF210A and RF210B) Low gain (11 dB gain, RF210A) Low gain (3 dB gain, RF210B) High gain (19 dB gain, RF210A and RF210B) (Note 3) Input 1 dB compression point Input third order intercept point IF shunt resistance/side Spurious response (Note 2): 2(RF) x 2(LO) and 3(RF) x 3(LO) Image rejection
Test Condition
DCS1800/PCS1900 Mode, BANDSEL = 1 ENA = 1 ENA = 0
Min
Typical
Max
Units
42 250 1805 350 1355 30 400 1990 450 1640 40 - j10 19 11 3 0.5
mA A MHz MHz MHz dB dB dB dB dB dB
LNA1800IN = 1900 MHz GAINSEL = 0 GAINSEL = 1 GAINSEL = 1
1 0.5
No blocker, GAINSEL = 0 GAINSEL = 1 GAINSEL = 1 -22 dBm blocker, GAINSEL = 0 -24 -17 400 Interferer = -65 dBm
3.5 9.0 15 4.1
4.5 11 16
dB dB dB dB dBm dBm
500 -53
600
dB dB
35 Control Signals (All Modes)
Enable (ENA) and gain select (GAINSEL) input voltages: VIH VIL Enable (ENA) and gain select (GAINSEL) input currents: IIH IIL
1.9 0.8
V V
-10 Enable time Bandselect switching time Note 1: Assumes 0 dBm @ 915 MHz blocker at the antenna input attenuated by 28 dB. Note 2: The rejection is specified with respect to the desired signal gain. Note 3: Assumes -12 dBm @ 1785 MHz blocker at the antenna input attenuated by 10 dB.
20 -1 15 15
100 0
A A s s
4 October 20, 1999
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Proprietary Information and Specifications are Subject to Change
100775A
Image-Reject Downconverter
RF210(A/B)
VCC
RFC
RFC
RFC
.01 F
22 pF
.01 F
22 pF
.01 F
22 pF 5 6 20
100 pF
RF210
ENABLE
10
ENA
82 nH
2.2 pF
82 nH
2.2 pF
56 nH 68 nH
Fujitsu FAR-F5CE-947M50-D235 FL200
150 pF 6.8 nH 1.5 pF 22 pF
900 MHz GSM
2
In
Out Ground
5
4
LNA900IN
0 90 90
IFOUT+ 17 IFOUT16
68 nH
7 1 2
Coil IN2 OUT2 IN1 OUT1 Ground
B4806
6 5
100 nH IF XCVR 100 nH 150 pF 68 nH
68 nH
1346
348
Siemens 400 MHz SAW Filter (B4806)
Gain Select
2K 22 pF
7
GAINSEL IRM
Fujitsu FAR-F6CE-1G8425-L2YB FL201
1800 MHz DCS
2
In
Out Ground
5
1.5 nH 1.5 pF 22 pF
8
LNA1800IN
0 90
LOIN 13
LO
1346
ADJMIX 11
NC Band Select
2K 22 pF 14
1
BANDSEL
BIAS
BYP900
18 2.2 nF
BYP1800 Ground
15 2.2 nF 2 3 9 12 19
C070
Figure 3. Typical RF210(A/B) Application Circuit
100775A
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Proprietary Information and Specifications are Subject to Change
5 October 20, 1999
RF210(A/B)
Image-Reject Downconverter
0.65 mm
Pin #1 indicator
6.40 mm
TOP VIEW
BOTTOM VIEW
6.500.10 mm 1.00+0.5/-0.2 mm 1.20 mm max
1.00 mm Ref
4.400.10 mm
0.24+0.06/-0.05 mm
0.100.05 mm
END VIEW
SIDE VIEW
C003
Figure 4. RF210(A/B) Package Dimensions - 20-Pin TSSOP
8.00 0.10
4.00 0.10
1.50 0.10 2.00 0.05
1.75 0.10
Pin #1 indicator
12.00 +0.30/-0.10 5.50 0.05
1.50 0.25 4.00 0.292 0.013 1.20 8o Max 7 Max
o
Notes: 1. Carrier tape material: black conductive polycarbonate 2. Cover tape material: transparent conductive PSA 3. Cover tape size: 9.3 mm width 4. Tolerance: .XX = 0.10 5. Quantity: 2500 per reel 6. All measurements are in millimeters
6.75 0.10
1.70 0.10
7.05 0.10
C879
Figure 5. RF210(A/B) Tape and Reel Dimensions
6 October 20, 1999
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100775A
Image-Reject Downconverter
RF210(A/B)
Ordering Information
Model Name
Dual-Band, Image-Reject Downconverter: 10 dB switchable gain 20 dB switchable gain
Manufacturing Part Number
RF210A RF210B
Product Revision
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100775A
Conexant
Proprietary Information and Specifications are Subject to Change
7 October 20, 1999
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