TA2123AF Просмотр технического описания (PDF) - Toshiba

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TA2123AF

TOSHIBA Bipolar Integrated Circuit Silicon Monolithic

Toshiba 

TA2123AF

Terminal Explanation

(terminal voltage: Typical terminal voltage at no signal with test circuit, VCC = 1.3V,

Ta = 25°C)

Terminal

No.

Name

1 INA-F

2 INB-F

4 INB-R

5 INA-R

6 PRE NFA

11 PRE NFB

Function

Input of preamplifier

F / R SW (pin 44)

“L” level: Pin 1 / 2

“H” level: Pin 4 / 5

Refer to application note 3 (2)

NF of preamplifier

Internal Circuit

VREF OUT

FWD

REV

1

6

5

5pF

10pF

5pF 10pF

500Ω

FWD REV

500Ω

3 VREF OUT

48 VREF IN

Output of reference circuit

Input of reference circuit

48

3

7 PRE OUTA

Output of preamplifier

7

10 PRE OUTB

8 MTL DRVA

Metal driver terminal

8

On resistance: 90Ω (typ.)

9 MTL DRVB

Terminal

Voltage

(V)

0.73

0.7

0.73

0.44

—

12 AMS IN

Input of mixer amplifier for AMS

signal

14 AMS MIX

Output of mixer amplifier for AMS

signal

0.7

12

14

0.7

VREF OUT

VREF OUT

13 AMS SW

AMS sensitivity changeover switch

(this switch synchronizes with the

MT SW)

13

—

MT SW ON : CURRENT SOURCE→ON

MT SW OFF : CURRENT SOURCE→OFF

3

2002-10-30

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