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UBA1706 Dataheets PDF



Part Number UBA1706
Manufacturers NXP
Logo NXP
Description Cordless telephone line interface
Datasheet UBA1706 DatasheetUBA1706 Datasheet (PDF)

INTEGRATED CIRCUITS DATA SHEET UBA1706 Cordless telephone line interface Objective specification Supersedes data of 1999 Mar 08 File under Integrated Circuits, IC17 1999 Jun 04 Philips Semiconductors Objective specification Cordless telephone line interface FEATURES Line interface • Low DC line voltage; operates down to 1.2 V (excluding polarity guard) • Voltage regulator with adjustable DC voltage • DC mask for voltage or current regulation (CTR21) • Line current limitation for protection • .

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INTEGRATED CIRCUITS DATA SHEET UBA1706 Cordless telephone line interface Objective specification Supersedes data of 1999 Mar 08 File under Integrated Circuits, IC17 1999 Jun 04 Philips Semiconductors Objective specification Cordless telephone line interface FEATURES Line interface • Low DC line voltage; operates down to 1.2 V (excluding polarity guard) • Voltage regulator with adjustable DC voltage • DC mask for voltage or current regulation (CTR21) • Line current limitation for protection • Electronic hook switch control input • Transmit amplifier with: – Symmetrical inputs – Fixed gain – Large signal handling capability. • Receive amplifier with fixed gain • Transmit and receive amplifiers Automatic Gain Control (AGC) for line loss compensation. General purpose switches Two switches with open-collector. 3-wire serial bus interface Allows control of: • DC mask (voltage or current regulation) • Receive amplifier mute function • AGC: – On/off – Slope – Istart line current. • The state of the general purpose switches • Global power-down mode. Supply Operates with external supply voltage from 3.0 to 5.5 V. ORDERING INFORMATION TYPE NUMBER UBA1706TS PACKAGE NAME SSOP24 DESCRIPTION plastic shrink small outline package; 24 leads; body width 5.3 mm APPLICATIONS • Cordless base stations UBA1706 • Mains or battery-powered telephone sets. GENERAL DESCRIPTION The UBA1706 is a BiCMOS integrated circuit intended for use in mains-powered telecom terminals. It performs all speech and line interface functions, DC mask for voltage or current regulation and electronic hook switch control. The device also includes general purpose switches. Most of the characteristics are programmable via a 3-wire serial bus interface. VERSION SOT340-1 1999 Jun 04 2 Philips Semiconductors Objective specification Cordless telephone line interface UBA1706 QUICK REFERENCE DATA Iline = 15 mA; VCC = 3.3 V; RSLPE = 10 Ω; AGC pin connected to GND; Zline = 600 Ω; ZSET = 619 Ω; EHI = HIGH; f = 1 kHz; Tamb = 25 °C; bit AGC at logic 1, all other configuration bits at logic 0; measured in the test circuit of Fig.14; unless otherwise specified. SYMBOL VCC ICC Iline VLN RREGC PARAMETER supply voltage current consumption from pin VCC line current operating range DC line voltage DC mask slope in current regulation mode voltage gain transmit amplifier from TXI to LN ∆Gv(trx) gain control range for transmit and receive amplifiers with respect to Iline = 15 mA VTXI = 50 mV (RMS) Iline = 90 mA 10.6 36.9 − 11.6 37.9 6.5 12.6 38.9 − dB dB dB receive amplifier from RXI to RXO VRXI = 2 mV (RMS) Iline > 35 mA (typical); RLVI = 1 MΩ; RRGL = 7.15 kΩ; bit CRC = 1 normal operation; bit PD = 0 power-down mode; bit PD = 1 normal operation with reduced performance CONDITIONS MIN. 3.0 − − 11 3 2.7 − TYP. − 2.2 110 − − 3.0 1.4 MAX. 5.5 3.2 150 140 11 3.3 − UNIT V mA µA mA mA V kΩ Gv(trx) 1999 Jun 04 3 Philips Semiconductors Objective specification Cordless telephone line interface BLOCK DIAGRAM UBA1706 handbook, full pagewidth VCC 21 UBA1706 19 GND RX PREAMP RXI 9 V 2Vd EHI TXI+ TXI− 15 14 V I I RXM LINE INTERFACE 7 2Vd 1 LN ZSET RXO LINE INTERFACE 300 mV 24 SLPE REG CREG RSLPE TX PREAMP RAGC2 RAGC1 2 AGC 8 AGC 2 EHI LOW VOLTAGE PART EHI SAGC, AGC CURRENT LIMITATION VCC SLPE 10 5 EHI LCC CST CCST VCC TPDARL D REG SWITCH DRIVER PROTECTION 600 mV 6 CRC RRGL 200 nA RGL 4 3 LVI RLVI TNSW TNON-HOOK 16, 20, 22, 23 n.c. GENERAL SWITCHES 2 9 SERIAL INTERFACE SUPPLY 18 17 SWI1 SWI2 SWC1, SWC2 PD 12 EN 13 CLK 11 DATA MBL039 Bit names are given in italics. Fig.1 Block diagram. 1999 Jun 04 4 Philips Semiconductors Objective specification Cordless telephone line interface PINNING SYMBOL LN REG LVI RGL LCC CST RXO AGC RXI EHI DATA EN CLK TXI− TXI+ n.c. SWI2 SWI1 GND n.c. VCC n.c. n.c. SLPE PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DESCRIPTION positive line terminal line voltage regulator decoupling negative line voltage sense input reference for current regulation mode line current control output input for stability capacitor receive amplifier output automatic gain control/line loss compensation adjustment receiver amplifier input electronic hook switch control input serial bus data input programming serial bus enable input serial bus clock input inverted transmit amplifier input non-inverted transmit amplifier input not connected NPN open-collector output 2 NPN open-collector output 1 ground reference not connected supply voltage not connected not connected connection for slope resistor AGC RXI 8 9 LVI RGL LCC CST RXO 3 4 5 6 handbook, halfpage UBA1706 LN REG 1 2 24 SLPE 23 n.c. 22 n.c. 21 VCC 20 n.c. 19 GND UBA1706 7 18 SW1 17 SW2 16 n.c. 15 TXI+ 14 TXI13 CLK FCA031 EHI 10 DATA 11 EN 12 Fig.2 Pin configuration. 1999 Jun 04 5 Philips Semiconductors Objective specification Cordless telephone line interface FUNCTIONAL DESCRIPTION All data given in this chapter consists of typical values, except when otherwise spe.


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