HA12142NT datasheet(4/63 Pages) HITACHI

Part #	HA12142NT

Description	Dolby B- and C-Type Noise Reduction System

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Manufacturer	HITACHI [Hitachi Semiconductor]

Direct Link	http://www.renesas.com/eng

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4 / 63 page

HA12141NT, HA12142NT, HA12170NT, HA12161FP, HA12162FP

Rev.3, Jun. 1999, page 4 of 63

Electrical Characteristics (Ta = 25°C, V

CC = Vopr-typ, unless otherwise specified)

(Dolby Level = 300 mVrms at TP (REC-mode: TP2, TP4 PB-mode: TP1, TP3)) (cont)

Test conditions

Item

Symbol

Min

Typ

Max

Unit R/P

NR

f (Hz)

Signal to noise ratio

S/N (REC) 60.0

64.0

—

dB

R

C

—

Rg = 5.1k

Ω

CCIR/ARM

Total harmonic distortion THD (OFF) —

0.03

0.15

%

R

OFF 1 k

Vin = 0dB

THD (C)

—

0.09

0.3

%

R

C

1 k

Vin = 0dB

NR OFF frequency

response

FR-OFF

–3.0

0.0

+3.0

dB

P

OFF 100 k

Vin = 0dB

Crosstalk between

CT (R

→P) —

80.0

—

dB

P

OFF 1 k

Vin = 0dB

REC-PB

CT (P

→R) —

80.0

—

dB

R

OFF 1 k

Crosstalk between

CT (L

→R) —

85.0

—

dB

R

OFF 1 k

Vin = 0dB

channel

CT (R

→L) —

85.0

—

dB

Control voltage for MPX

OFF/REC/PB

Vcont

(MPX)

V

CC–1

—

V

CC

V

Vcont

(REC)

2.5

—

VCC

2

+ 0.5 V

Vcont (PB) 0.0

—

0.4

V

Control voltage for NR

C/B OFF

Vcont (C)

VCC

2

+ 3

—V

CC

V

Vcont (B)

VCC

2

–0.5 —

VCC

2

+ 0.5 V

Vcont

(OFF)

0.0

—

VCC

2

–3

V

PB-OUT

HA12141NT Vout

250

300

350

mVrms R

OFF 1 k

Vin = 0dB

level

HA12142NT

490

580

670

mVrms

HA12170NT

646

775

904

mVrms

REC-OUT offset

Voffset

–70

0.0

70

mV

R

OFF

→C

—V

CC = 16V

No signal

Channel balance

∆Gv

–1.0

0.0

1.0

DB

R

OFF 1 k

Vin = 0dB

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