70 dB Dynamic Range CMOS Wideband Digital Variable Gain Amplifier for AGC in DVB-T/H Receivers

Wang, Chua-Chin; Huang, Chi‐Chun; Lee, Ching-Li; Lin, Li-Ping; Tseng, Yih-Long

doi:10.1007/s00034-008-9028-9

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Cited by 5 publications

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“…[10] Ref. [11] This work Gain (dB) -21 to 21 Figure 9 shows the S 21 testing results. The gain dynamic range is -14 to 49 dB at 10 MHz, and the step is 1 dB with a step error of within ˙0.38 dB.…”

Section: Measurementsmentioning

confidence: 99%

A binary-weighted 64-dB programmable gain amplifier with a DCOC and AB-class buffer

et al. 2012

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This paper designs a binary-weighted programmable gain amplifier (PGA) with a DC offset cancellation (DCOC) circuit and an AB-class output buffer. The PGA adopts the circuit topology of a differential amplifier with diode-connected loads. Simulation shows that the performance of the PGA is not sensitive to temperature and process variation. According to test results, controlled by a digital signal of six bits, the PGA can realize a dynamic gain of -2 to 61 dB, and a gain step of 1 dB with a step error within ˙0.38 dB. The minimum 3 dB bandwidth is 92 MHz. At low-gain mode, IIP3 is 17 dBm, and a 1 dB compression point can reach 5.7 dBm. The DCOC circuit enables the amplifier to be used in a direct-conversion receiver and the AB-class output buffer circuit reduces the overall static power consumption.

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Section: Measurementsmentioning

confidence: 99%