UBA1702A datasheet(3/24 Pages) PHILIPS

3 / 24 page

1997 Sep 29

Philips Semiconductors

Product speciﬁcation

Line interrupter driver and ringer

UBA1702; UBA1702A

QUICK REFERENCE DATA

Speech part: lline = 20 mA; DPI = LOW; Tamb =25 °C; VEE = 0 V; unless otherwise speciﬁed.

Ringer part: Vline(rms) = 45 V; f = 25 Hz; using an RC combination of 2.2 kΩ and 820 nF and a diode bridge between the

line and the RPI input.

Notes

1. Independent of VRR if greater than 10 V.

2. Without piezo transducer, dependent on VRR.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Speech part

SWITCH DRIVER AND REFERENCES (PINS SDI, SDO, EHI AND DPI); UBA1702A ONLY

RSDO

resistance between pins SDO and VEE

−

2.2

−

Ω

SWITCH DRIVER AND REFERENCES (PINS SDI, SDO, EHI AND DPI); UBA1702 AND UBA1702A

RSDI-SDO

resistance between pins SDI and SDO VSDI − VSDO <12V

−

1.1

−

Ω

RSDI

resistance between pins SDI and VEE

VSDI = 240 V; DPI = HIGH

−−

Ω

MUTE SWITCH AND ADJUSTABLE PROTECTION ZENER VOLTAGE (PINS MSI, MSA AND ZPA)

VSPO(M)

adjustable mute voltage referenced to

VEE

MSI = HIGH;

MSA open-circuit

−

2.7

VSPO(Z)

adjustable zener voltage referenced to

VEE

MSI = LOW;

ZPA open-circuit

CURRENT MANAGEMENT (PINS SPI, SPO, CDA, CLA AND CDO)

lSPI(lim)

current limitation (pin SPI)

CLA shorted to VEE

−

120

−

ISPI(det)

current detection (pin SPI)

CDA open-circuit

MICROCONTROLLER SUPPLY (VDD AND VBB)

VDD

supply output voltage referenced to

VSS

VBB > 3.7 V; IDD = −1 mA

3.0

3.3

3.6

Ringer part

PROTECTION (PIN RPI)

IRPI(max)

maximum input current

−−

RINGER THRESHOLD AND FREQUENCY DETECTION (PINS VRR,RTA AND RFO)

VRR(th)

ringer supply threshold voltage

referenced to VSS

RTA open-circuit

−

VOLUME CONTROL (PINS RV0, RV1 AND RV2)

∆Gs

step resolution

(RV2, RV1, RV0) from

(0, 0, 0) to (1, 1, 0); note 1

−

∆G

last step resolution

(RV2, RV1, RV0) from

(1, 1, 0) to (1, 1, 1); note 2

−

9.5

RINGER MELODY INPUT AND PIEZO DRIVER (PINS RMI, ROA AND ROB)

Vo(max p−p) maximum output voltage between pins

ROA and ROB (peak-to-peak value)

RV2=1; RV1=1; RV0=1

−

28.7

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