Features • Complete CODEC and FILTER system including: • Transmit and receive PCM channel filters • µ-law or A-law companding encoder and decoder • Receive power amplifier drives 300 Ohm • 4.096 MHz serial PCM data (max) • Programmable Functions: • Transmit gain: 25.4 dB range, 0.1 dB steps • Receive gain: 25.4 dB range, 0.1 dB steps • Hybrid balance cancellation filter • Time-slot assignment; up to 64 slots/frame • 2 port assignment (TP3070) • 6 interface latches (TP3070) • A or µ-law • Analog loopback • Digital loopback • Direct interface to solid-state SLICs • Simplifies transformer SLIC; single winding secondary • Standard serial control interface • 80 mW operating power (typ) • 1.5 mW standby power (typ) • Designed for CCITT and LSSGR applications • TTL and CMOS compatible digital interfaces • Extended temperature versions available for -40°C to +85°C (TP3070V-X) Description The TP3070 and TP3071 are second-generation combined PCM CODEC and Filter devices optimized for digital switching applications on subscriber line and trunk cards. Using advanced switched capacitor techniques, COMBO II combines transmit bandpass and receive lowpass channel filters with a companding PCM encoder and decoder. The devices are A-law and µ-law selectable and employ a conventional serial PCM interface capable of being clocked up to 4.096 MHz. A number of programmable functions may be controlled via a serial control port. Channel gains are programmable over a 25.4 dB range in each direction, and a programmable filter is included to enable Hybrid Balancing to be adjusted to suit a wide range of loop impedance conditions. Both transformer and active SLIC interface circuits with real or complex termination impedances can be balanced by this filter, with cancellation in excess of 30 dB being readily achievable when measured across the passband against standard test termination networks. To enable COMBO II to interface to the SLIC control leads, a number of programmable latches are included; each may be configured as either an input or an output. The TP3070 provides 6 latches and the TP3071 5 latches. See also AN-614, COMBO II application guide.

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Datasheet

Title		Size	Date	Other Language
	TP3070, TP3071, TP3070-X COMBO II Programmable PCM CODEC/Filter	401 Kbytes	3-Mar-99

Featured Application Notes

Title		Size	Date	Other Language
	AN-795: AN-795: TP3077SW HyBal Software Manual (353 Kbytes; 05-Aug-1995)	324 Kbytes	25-May-06
	AN-1156: AN-1156: Application Note 1156 TP3070 COMBO II Performance with V.90 56K Modems (56 Kbytes; 16-Nov-1999)	56 Kbytes	25-May-06
	AN-614: AN-614 COMBO II Programmable PCM CODEC/Filter Family Application Guide	259 Kbytes	22-Jan-97

More Application Notes

Title		Size	Date	Other Language
	AN-665: AN-665: Application Note 665 TP3420A S Interface Device (SID) User's Guide (1223 Kbytes; 02-Mar-1999)	1223 Kbytes	25-May-06
	AN-913: AN-913: TP3410 2BIQ U Interface Device Users Manual (436 Kbytes; 05-Aug-1995)	334 Kbytes	25-May-06
	AN-492: AN-492: Intuitive ISDN - An ISDN Tutorial (115 Kbytes; 04-Nov-1995)	115 Kbytes	25-May-06
	AN-664: ISDN Basic Rate Interface Terminal Equipment (TE) System Design Guide	190 Kbytes	5-Aug-95
	AN-796: AN-796: ISDN Basic Access Components for the Design of ISDN Peripherals (227 Kbytes; 05-Aug-1995)	227 Kbytes	25-May-06

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
TP3070V-G/NOPB TP3070V-G RoHS	PLCC	Full production Lead Time: 12 weeks	Distributor Region Qty ARROW Worldwide 150 AVNET-EM Worldwide 105 DIGIKEY Worldwide 565 FUTURE Worldwide 1100 NEWARK Americas 447	$4.80 each at 1K+ pcs	rail of 35
TP3070V-XG/NOPB TP3070V-XG RoHS	PLCC	Full production Lead Time: 8 weeks	Distributor Region Qty ARROW Worldwide 3130 AVNET-EM Worldwide 2 DIGIKEY Worldwide 0 FUTURE Worldwide 245	$4.82 each at 1K+ pcs	rail of 35

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
TP3070AV-G	TP3070V-G	NATIONAL SEMICONDUCTOR	25 Oct 2005
TP3070AV-XG	NONE	NONE	01 Dec 2004

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
TP3070V-G	CS150	1	15120	67	0	1067500	4	302906039
TP3070V-XG	CS150	1	15120	67	0	1067500	4	302906039

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
TP3070AV-G	TP3070V-G	NATIONAL SEMICONDUCTOR	25 Oct 2005
TP3070AV-XG	NONE	NONE	01 Dec 2004