HMC1122 Datasheet, PDF (1/15 Pages) Analog Devices – 0.1 GHz to 6.0 GHz, 0.5 dB LSB, 6-Bit, Silicon Digital Attenuator

Data Sheet
0.1 GHz to 6.0 GHz, 0.5 dB LSB, 6-Bit,
Silicon Digital Attenuator
HMC1122
FEATURES
Attenuation range: 0.5 dB LSB steps to 31.5 dB
Low insertion loss
1.1 dB at 1 GHz
1.3 dB at 2 GHz
Typical step error: less than ±0.1 dB
Excellent attenuation accuracy
Safe state transitions
High linearity
Input 0.1dB compression (P0.1dB): 30 dBm typical
Input third-order intercept (IP3): 55 dBm typical
RF settling time (0.05 dB final RF output): 250 ns
Low phase shift error: 6° at 1 GHz
Single supply operation: 3.3 V to 5 V
ESD rating: Class 2 (2 kV HBM)
24-lead, 4 mm × 4 mm LFCSP package: 16 mm²
Pin compatible to the HMC624A
APPLICATIONS
Cellular infrastructure
Microwave radios and very small aperture terminals (VSATs)
Test equipment and sensors
IF and RF designs
FUNCTIONAL BLOCK DIAGRAM
24 23 22 21 20 19
P/S 1
18 VDD
CLK 2
SERIN 3
SERIAL/
PARALLEL
INTERFACE
17 PUP1
16 PUP2
LE 4
GND 5
ATTIN 6
7
6-BIT/
DIGITAL
ATTENUATOR
15 SEROUT
14 GND
13 ATTOUT
8 9 10 11 12
PACKAGE
BASE
GND
Figure 1.
GENERAL DESCRIPTION
The HMC1122 is a 6-bit digital attenuator operating from
0.1 GHz to 6 GHz with a 31.5 dB attenuation control range in
0.5 dB steps.
The HMC1122 is implemented in a silicon process, offering
very fast settling time, low power consumption, and high ESD
robustness. The device features safe state transitions and
optimized for excellent step accuracy and high linearity over
frequency and temperature range. The RF input and output are
internally matched to 50 Ω and do not require any external
matching components. The design is bidirectional; therefore,
the RF input and output are interchangeable.
The HMC1122 operates on a single supply ranging from 3.3 V
to 5 V with no performance change due to an on-chip regulator.
The device incorporates a driver that provides both serial and
parallel control of the attenuator. The device also features a user-
selectable power-up state and a serial output port for cascading
other serial controlled components.
The HMC1122 comes in a RoHS compliant, compact, 4 mm ×
4 mm LFCSP package, and is pin compatible to the HMC624A.
A fully populated evaluation board is available.
Rev. 0
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