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| product name：Temperature Compensation Attenuator |
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| International invention patent |
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| US Utility patent No. US7,362,196 B2 |
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| EU, China, Taiwan patented |
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| Applications: |
| ● Power Amplifier |
| ● Low Noise Amplifier |
| ● Gain Blocks |
| ● Optical Transceiver Module |
| ● MMIC Amplifiers |
| ● WLAN (2.4GHz or 5.8GHz) |
| ● WiMAX |
| ● UWB |
| ● Mixers |
| ● Power Dividers |
| ● Satellite Communication |
| ● Directional Couplers |
| ● Broadcast (TV & Radio) |
| ● Radar | |
Features: |
| ● Frequency range: DC to 3GHz,DC to 6GHz,DC to 12.4GHz，DC to 18GHz |
| ● Power rating: 100mW,200mW,2W |
| ● Impedance: 50Ω or 75Ω |
| ● Operating temperature: -55℃ to +150℃ |
● Excellent characteristics of attenuation compensating: wide attenuation variable range and
low VSWR of temperature from -55℃to +150℃, especially at the frequency of 1GHz, 3GHz
and 6GHz.
● There are 10 attenuations from 1dB to 10dB, and 7 variation slope characteristics per
attenuation, which are N3, N4, N5, N6, N7, N8 and N9, totally 70 different combinations of
temperature correction characteristics. In addition, bigger variation slopes such as N10 and
N11 can be customized by request.
● Adopting 100% laser trimming, high attenuation accuracy.
● High reliability. Adopting advanced thick film technology through firing at the high temperature
of 850 ℃.
● Zero Distortion, and no phase changes and time delay caused by temperature variation.
● Temperature compensation and RF isolation, which are more suitable for multi-stage power
amplifiers.
● No extra IP3 exists and suitable for linear power amplifier.
● Low cost and small size. It can be easily designed in RFpower amplifier to replace AGC loop
circuit, which is easy for the regeneration of RF circuit
● Tape and reel package is available, which is convenient for SMT. |
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Excellent RF-Temperature Characteristic of TCA series at 1GHz, 3GHz and 6GHz
Yantel`s temperature compensation attenuator has a wide attenuation variable range in the temperature from -55 ℃ to +150℃ at 1GHz, 3GHz and 6GHz. Meanwhile, the attenuation tolerance and VSWR is very low at 1GHz, 3GHz and 6GHz.This characteristic makes it more suitable in wide frequency range application, like 5.3~5.8GHz WLAN and UWB. When customers look for higher frequency for good telecommunication, Yantel can offer the best solution of excellent RF performance (at 1GHz, 3GHz and 6GHz) and competitive cost. |
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Part No. Description
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TCA
Series |
**
Frequency |
**
Attenuation |
**
Temperature coefficient code |
**
Metallization Options
|
*
Termination Plating Options |
|
TCA,STCA,MTCA
HTCA or BTCA |
03,06
12 or 18 |
01 to 10
(1dB to 10dB) |
(N3 to N10) or (P3 to P8) |
Planar(no code),W1,W3,WB1 or G |
(no code)=Lead free or
(S)=Lead(Pb) | |
| |
Example: P/N STCA0603N9W3 is STCA series, frequency range DC to 6GHz, 3dB attenuation @25℃,
temperature coefficient of attenuation -0.009 dB/dB/℃, triple wrap terminations lead free. |
| Metallization & Plating Options |
| ● Planar(no code): planar terminal. |
| ● Single wrap(W1): metallization wrap ground terminal. |
| ● Triple wrap(W3): metallization wrap input, output and ground terminal. |
● Wire bond(WB1): (MTCA & HTCA only)metallization wrap ground terminal, input and output terminal have gold metallization
for wire bonding. |
| ● Lead(Pb) (S): Lead terminals improve solderability (available on planar, W3 & W1 options) |
| ● Lead free(no code): Lead free terminals. (planar, W1 and W3 are available) |
| ● Planar gold(G): (MTCA & HTCA only)planar terminal with gold metallization for wire bonding. | |
| Material Specification |
| ● Substrate: Alumina(Al2O3) |
| ● Resistive material: Thick film |
● Terminal material: Thick film, nickel barrier with pure tin
plate(lead free) or with tin(Sn90) plate(10% lead contained), or gold finish. |
| ● Protective Coating: Thick film (ethyl acetate) | |
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| TCA series
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| Specifications |
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● Frequency range: DC to 6GHz
● Operating temperature: -55℃ to 150℃
● Impedance: 50Ω |
● Power rating: 2W
● Size: 3.1×3.68×0.53(mm), type I
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|
Model |
Attenuation
(dB) |
Temperature
Coefficient Code
|
Temperature Coefficient
of Attenuation (dB/dB/℃) |
Max.
VSWR (:1) @1GHz |
Attenuation
Accuracy
(dB) |
|
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1 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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2 |
N3~N10 |
-0.003~ -0.01 |
1.20 |
±0.5 |
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3 |
N3~N10 |
-0.003~ -0.01 |
1.20 |
±0.5 |
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4 |
N3~N10 |
-0.003~ -0.01 |
1.20 |
±0.5 |
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5 |
N3~N10 |
-0.003~ -0.01 |
1.20 |
±0.5 |
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6 |
N3~N10 |
-0.003~ -0.01 |
1.20 |
±0.5 |
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7 |
N3~N10 |
-0.003~ -0.01 |
1.20 |
±0.5 |
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8 |
N3~N10 |
-0.003~ -0.01 |
1.20 |
±0.5 |
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9 |
N3~N10 |
-0.003~ -0.01 |
1.20 |
±0.5 |
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10 |
N3~N10 |
-0.003~ -0.01 |
1.20 |
±0.5 | |
① Note: For example 4N9, when temperature changes by 1℃, the attenuation variation equals 4dB X 0.009
(temperature coefficient code) X 1℃ = 0.036dB. When temperature changes by 100℃, the attenuation variation equals
4dB X 0.009 X 100℃ = 3.6dB. | |
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| STCA series
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| Specifications |
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● Frequency range: DC to 6GHz
● Operating temperature: -55℃ to 150℃
● Impedance: 50Ω |
● Power rating: 100mW
● Size: 1.20×2.0×0.53(mm), type Ⅴ
| |
|
Model |
Attenuation (dB) |
Temperature
Coefficient Code
|
Temperature Coefficient
of Attenuation (dB/dB/℃) |
Max.
VSWR (:1) @1GHz |
Attenuation
Accuracy
(dB) |
|
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1 |
N3~N7 |
-0.003~ -0.007 |
1.20 |
±0.5 |
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2 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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3 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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4 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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5 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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6 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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7 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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8 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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9 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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10 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 | | |
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| HTCA series
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| Specifications |
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● Wide frequency range: DC to 18GHz
● Operating temperature: -55℃ to 150℃
● Impedance: 50Ω |
● Power rating: 200mW
● Size: 1.52×1.90×0.28(mm), type III
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|
Model |
Attenuation (dB) |
Temperature
Coefficient Code
|
Temperature Coefficient
of Attenuation (dB/dB/℃) |
Max.
VSWR (:1) @1GHz |
Attenuation
Accuracy
(dB) |
|
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1 |
N3~N7 |
-0.003~ -0.007 |
1.15 |
±0.5 |
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2 |
N3~N9 |
-0.003~ -0.009 |
1.15 |
±0.5 |
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3 |
N3~N9 |
-0.003~ -0.009 |
1.15 |
±0.5 |
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4 |
N3~N9 |
-0.003~ -0.009 |
1.15 |
±0.5 |
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5 |
N3~N9 |
-0.003~ -0.009 |
1.15 |
±0.5 |
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6 |
N3~N9 |
-0.003~ -0.009 |
1.15 |
±0.5 | | |
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| MTCA series |
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| Specifications |
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● Wide frequency range: DC to 12.4GHz
● Operating temperature: -55℃ to 150℃
● Impedance: 50Ω |
● Power rating: 200mW
● Size: 1.52×1.91×0.25(mm), type Ⅳ
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|
Model |
Attenuation (dB) |
Temperature
Coefficient Code
|
Temperature Coefficient
of Attenuation (dB/dB/℃) |
Max.
VSWR (:1) @1GHz |
Attenuation
Accuracy
(dB) |
|
|
1 |
N3~N7 |
-0.003~ -0.007 |
1.20 |
±0.5 |
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2 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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3 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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4 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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5 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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6 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 | | |
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BTCA series
(Suitable for Optical Transceiver Module for Broadcast application) | |
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| Specifications |
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● Frequency range: DC to 3GHz
● Operating temperature: -55℃ to 150℃
● Impedance: 75Ω |
● Power rating: 2W
● Size: 3.1×3.68×0.53(mm), type I
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|
Model |
Attenuation (dB) |
Temperature
Coefficient Code
|
Temperature Coefficient
of Attenuation (dB/dB/℃) |
Max.
VSWR (:1) @1GHz |
Attenuation
Accuracy
(dB) |
|
|
1 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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2 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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3 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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4 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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5 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 |
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6 |
N3~N9 |
-0.003~ -0.009 |
1.20 |
±0.5 | | |
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| Green TCA Series (Lead far less than 1000ppm, no need RoHs exemption.) |
 Real Lead-free Green Temp. Comp. Attenuator |
Features:
● TCA, STCA, MTCA, HTCA and BTCA (lead far less than 1000ppm)
are available.
● Frequency range: DC ~ 3GHz,DC ~ 6GHz，DC ~ 12.4GHz，DC ~ 18GHz
● Input power: 100mW, 200mW, 2W
● Impedance: 50Ω or 75Ω
● Wide attenuation variable range at temperature from -55℃ to +150℃.
● Low attenuation tolerance and low VSWR.
● 10 attenuations from 1dB to 10dB, and 7 variation slope characteristics from
N3 to N9 per attenuation are offered as standard products.
● Variation slope is calculated by linear regression
● High reliability using thick film package |
Advantages:
● Competitive pricing
● Quick delivery
● Excellent RF characteristics
● Customized design such as N10, N11 of temp. comp. coefficient are available by request. |
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| Planar Configuration (unit: mm) |
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| TCA Recommended Layout |
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| Application Schematic |
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