AT-213 Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3 GHz Features V 3.00 CR-11 n Attenuation: 1 dB steps to 15 dB n Temperature Stability: ± 0.18 dB from –55°C to +85°C n n n n Typical Low DC Power Consumption Hermetic Surface Mount Package Integral TTL Driver 50 Ohms Nominal Impedance Description M/A-COM’s AT-213 is a 4-bit, 1 dB step digital attenuator in a hermetically sealed ceramic 16-lead surface mount package. The AT-213 is ideally suited for use where high accuracy, fast switching, very low power consumption and low intermodulation products are required. Typical applications include dynamic range setting in a precision receiver circuits and other gain/leveling control circuits. Environmental screening is available. Contact the factory for information. Electrical Specifications: TA = -55°C to +85°C 1 Parameter Test Conditions Frequency Units Min Typ Max Reference Insertion Loss — DC - 0.5 GHz DC - 1.0 GHz DC - 2.0 GHz DC - 3.0 GHz dB dB dB dB — — — — — — — — 1.7 1.9 2.2 2.5 Attenuation Accuracy 2 Any Single Bit DC - 2.0 GHz DC - 3.0 GHz Any Combination of Bits DC - 2.0 GHz DC - 3.0 GHz — — Ratio — Trise, Tfall 10% to 90% — ns Ton, Toff 50% Control to 90/10% RF — ns Transients In-Band (peak-peak) — 1 dB Compression Input Power Input Power Input IP3 VSWR ± (0.15 dB +3% of atten setting in dB) dB ± (0.2 dB +3% of atten setting in dB) dB Or ± 0.4 dB, whichever is greater ± (0.2 dB +3% of atten setting in dB) dB ± (0.2 dB +3% of atten setting in dB) dB Or ± 0.4 dB, whichever is greater — 1.6:1 — 9 — — 40 — mV — 30 — 0.05 GHz 0.5 - 3.0 GHz dBm dBm — — +22 +28 — — For two-tone Input Power Up to +5 dBm 0.05 GHz 0.5 - 3.0 GHz dBm dBm — — +40 +50 — — Input IP2 For two-tone Input Power Up to +5 dBm 0.05 GHz 0.5 - 3.0 GHz dBm dBm — — +45 +68 — — Vcc — — V 4.5 5.0 5.5 Vee — — V -8.0 — -5.0 1. All specifications apply when operated with bias voltages of +5V for Vcc and –5.0V for Vee. 2. This attenuator is guaranteed monotonic. Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 2 GHz AT-213 V 3.00 Electrical Specifications: TA = -55°C to +85°C Parameter Test Conditions Frequency Units Min Typ Max Icc Vcc = 4.5 to 5.5V Vctl = 0 to 0.8V, or Vcc –2.1V to Vcc — mA — — 4.0 Iee Vee = -5.0 to -8.0V — mA — — 1.0 Vctl Vctl Logic 0 (TTL) Logic 1 (TTL) — — V V 0.0 2.0 — — 0.8 5.0 Input Leakage Current (Low) 0 to 0.8V — µA — — 1.0 Input Leakage Current (High) 2.0 to 5.0V — µA — — 1.0 Absolute Maximum Ratings 3 Parameter Absolute Maximum Max Input Power 0.5 GHz 0.5 - 3.0 GHz +27 dBm +34 dBm Supply Voltages Vcc Vee +5.5V -8.5V Truth Table Control Inputs C4 C3 C2 C1 Attenuation 0 0 0 0 Reference 0 0 0 1 1 dB 0 0 1 0 2 dB -0.5V to Vcc +0.5V 0 1 0 0 4 dB Operating Temperature -55°C to +125°C 1 0 0 0 8 dB Storage Temperature -65°C to +150°C 1 1 1 1 15 dB Control Voltage 4 3. Operation of this device above any one of these parameters may cause permanent damage. 4. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. 0 = TTL Low 1 = TTL High Functional Schematic (Top View) RF2 RF1 8 dB GND GND GND GND 4 dB GND Vee GND 2 dB Vcc C4 GND C1 1 dB GND Orientation Mark C2 PIN 1 Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 2 Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 2 GHz AT-213 V 3.00 Typical Performance Curves Ref. Insertion Loss vs. Frequency +25°C -55°C 1 dB Deviation from Nominal Atten (dB) +85°C 2.5 Insertion Loss (dB) Attenuation Accuracy vs. Frequency 2 1.5 1 0.5 0 0.0 0.5 1.0 1.5 2.0 2.5 2 dB 0.00 -0.20 -0.40 -0.60 0.0 3.0 0.5 1.0 8 dB 1.5 2.0 2.5 3.0 Frequency (GHz) RF2 VSWR vs. Frequency 1 dB Reference Loss State 1.6 1.6 1.5 1.5 1.4 1.4 VSWR VSWR 4 dB Full Attenuation 0.20 RF1 VSWR vs. Frequency 2 dB 8 dB 0.40 Frequency (GHz) 1 dB 4 dB 0.60 1.3 4 dB 8 dB Reference Loss State 1.3 1.2 1.2 1.1 1.1 1.0 2 dB 1 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) 0.0 0.5 1.0 1.5 2.0 2.5 3 Frequency (GHz) Ordering Information Part Number Package AT-213 PIN CR-11 Specifications subject to change without notice. n North America: Tel. (800) 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020 Visit www.macom.com for additional data sheets and product information. 3