The DRX 3973D and the DRX 3977D are fourth-generation COFDM demodulators, that offer today’s highest level of front-end integration, resulting in ultimate DVB-T digital reception according to ETS 300 744. The DRX 397yD series exceeds with margin the DTG and NorDig-Unified v1.0.2 Receiver Specifications.

The DRX 3973D and the DRX 3977D use cutting-edge digital filtering techniques in combination with a high-performance A/D converter and PLL configuration. This leads to superior performance figures in the presence of digital or analog adjacent channels. Progressive digital algorithms in the channel estimator of the DRX 3973D and the DRX 3977D result in exceptional performance in multi-path and dynamic echo conditions. This is important for Single Frequency Networks (SFNs) and indoor reception.

The state-of-the-art noise cruncher suppresses noise disturbances from sources such as cars, phones, and other electrical appliances.

Main Features

Highest level of functional integration and front-end flexibility:

Programmable Gain Amplifier (PGA) on chip, 30 dB maximum gain

Single 8-MHz SAW filter operation

AGC options: RF-AGC; IF-AGC

Flexible clock reference options

Exceptional digital reception performance:

High-quality PLL allows re-use of 4 MHz to 40 MHz (tuner) clock reference

Superior digital and adjacent channel performance (> −40 dB QEF)

Impulsive noise cruncher

Pre-SAW sense input, for optimal RF-AGC control and RF-level measurement

Input IF frequency range up to 44 MHz, supporting new tuner topologies with near-zero IF (“Silicon Tuners”)

Integrated microprocessor, to perform autonomous detection and operation of all possible DVB-T modes, without interaction of the host processor

Fully automatic and fast signal acquisition: UHF and VHF band-scan in <20 s.

Meets the relevant international DVB-T receiver specifications: NorDig-Unified v1.0.2, DTG, EICTA, and others.

Comfortable software drivers, including integrated tuner support

Secondary serial interface for tuner control

5 V tolerant AGC output

Configurable parallel or serial MPEG-TS output

PMQFP64 or PQFN48 package

IEEE 1149.1 boundary scan

Applications

IDTV / hybrid TV receivers

Set-top boxes

PVR / DVD-R

Network Interface Modules (NIM)

PC-TV cards

USB sticks

Versions

		Integrated PGA	Package
	DRX 3973D	•	PMQFP64
	DRX 3977D	•	PQFN48