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AT90-1283

Tyco Electronics
Part Number AT90-1283
Manufacturer Tyco Electronics
Description Digital Attenuator/ 15.5 dB/ 5-Bit/ TTL Driver/ DC-3.5 GHz
Published Mar 23, 2005
Detailed Description Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz V 4.00 AT90-1283 Features n n n n n n n CSP-1 Attenuatio...
Datasheet PDF File AT90-1283 PDF File

AT90-1283
AT90-1283

Overview
Digital Attenuator, 15.
5 dB, 5-Bit, TTL Driver, DC-3.
5 GHz V 4.
00 AT90-1283 Features n n n n n n n CSP-1 Attenuation: 0.
5 dB Steps to 15.
5 dB Single Positive Supply Contains Internal DC to DC Converter Low DC Power Consumption Small Footprint, JEDEC Package Integral TTL Driver 50 ohm Impedance Description M/A-COM's AT90-1283 is a GaAs FET 5-bit digital attenuator with integral TTL driver.
Step size is 0.
5 dB providing a 15.
5 dB total attenuation range.
This device is in an FQFP-N plastic surface mount package.
The AT901283 is ideally suited for use where accuracy, fast speed, very low power consumption and low costs are required.
Electrical Specifications TA = +25°C Parameter Insertion Loss Attenuation Accuracy Test Conditions — Individual Bits 0.
5-1-4-8 dB Individual Bit 2 dB Any Combination of Bits 1 to 15.
5 dB Full Range 50% Cntl to 90%/10% RF 10% to 90% or 90% to 10% — — Two-tone inputs up to +5 dBm — Sink Current is 20 µA max.
Source Current is 20 µA max.
Vcc min to max, Logic “0” or “1” Frequency DC - 3.
5 GHz DC - 3.
5 GHz DC - 3.
5 GHz DC - 3.
5 GHz DC - 3.
5 GHz — — 50 MHz 0.
5 - 3.
5 GHz 50 MHz 0.
5-3.
5 GHz — — — — Units dB dB dB dB Ratio nS nS dBm dBm dB dB V V V mA Min — — — — — — — — — — — 4.
75 0.
0 2.
0 — Typical 2.
8 — — — 1.
6:1 75 20 +21 +29 +35 +48 5.
0 — — 6 Max 3.
2 ±(.
3 +5% of atten setting) ±(.
4 +10% of atten setting) ±(.
5 +7% of atten setting) 1.
8:1 150 50 — — — — 5.
25 0.
8 5.
0 10 VSWR Switching Speed 1 dB Compression Input IP3 +Vcc Logic “0” Logic “1” Icc Digital Attenuator, 15.
5 dB, 5-Bit, TTL Driver, DC - 3.
5 GHz AT90-1283 V 4.
00 Pin Configuration Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1.
2.
3.
4.
5.
6.
Function GND C8 C4 C2 C1 C0.
5 GND NC NC NC1 GND RF1 GND NC NC NC Pin # 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Function NC NC +Vcc2 NC Cp4 NC Cp4 NC -Vee3,5 GND RF2 GND NC1 -Vee3,5 NC +Vcc2,6 Recommended PCB Layout 7 Pins 10 & 29 must be isolated Pin 19 must be connected to Pin 32.
Pin 25 must be connected to Pin 30.
.
01 µF cap m...


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