NJM2172 Datasheet, PDF (1/16 Pages) New Japan Radio – OPERATIONAL AMPLIFIER WITH EVR

NJM2172
OPERATIONAL AMPLIFIER WITH EVR
s GENERAL DESCRIPTION
The NJM2172 is single supply, dual OP-AMP with
electric variable resistor (EVR), which contains buffer
amplifier, OP-AMP, reference voltage circuit, EVR and EVR
control circuit.
The reference is fixed around 1/2 V⁺ level internally, and
only required few external parts.
The A and B EVR is control separately, and amp drive
up to 100Ω(typ.) load. The NJM2172 is suitable for
camcorder, CD, MD, and other audio signal process
system.
s PACKAGE OUTLINE
NJM2172V
s FEATURES
q Low Power Supply Voltage
q Low Operating Current
q A/Bch EVR adjust is separately
q EVR range
q Drivability
q Bipolar Technology
q Package Outline
s BLOCK DIAGRAM
14
13
12
11
10
9
8
Bch OPAMP
Bch EVR
Bch
VCA
Bch EVR AMP VREF AMP
Bch EVR Control
Ach EVR
Ach OPAMP
Ach EVR Control
Ach EVR AMP
Ach
VCA
1
2
3
4
5
6
7
V⁺ = 2.7 to 5.5V
Icc = 5.0mA typ.
-3.0 to -95ｄB
100Ω typ.
SSOP14
s PIN CONFIGURATION
1: OP_+INA
2: OP_-INA
3: OP_OUTA
4: EVR_OUTA
5: V_CNTA
6:
7:
VV_{C+ NT}B
8: GND
9: Vref
10:REF_IN
11:EVR_OUTB
12:OP_OUTB
13:OP_-INB
14:OP_+INB
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