NJM2172

NJM2172

OPERATIONAL AMPLIFIER WITH EVR

■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE

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 NJM2172Ｖ up to 100Ω(typ.) load. The NJU2172 is suitable for camcorder, CD, MD, and other audio signal process system.

■ FEATURES

+

● Low Power Supply Voltage V=2.7∼5.5V

● Low Operating Current ICC=5.0mA typ. ● A/Bch EVR adjust is separately

● EVR range –3.0 ~ -95dB ● Drivability 100Ω typ. ● Bipolar Technology ● Package Outline SSOP14

■ BLOCK DIAGRAM ■ PIN CONFIGURATION

1:OP+IN A 14 13 12 9 8 11 10 2:OP-IN A

3:OPAMP A

Bch VCA 4:EVROUT A

5:VCNT A Bch OPAMP Bch EVR AMP VREF AMP 6:VCNT B Bch EVR Control Bch EVR + 7:V

8:GND Ach EVR Ach EVR Control 9:Vref

Ach OPAMP 10:REFIN

Ach EVR AMP 11:EVROUT Ach VCA 12:EVROUT B

13: OP-IN B

14: OP+IN B 4 1 3 6 2 5 7

NJM2172

■ ABSOLUTE MAXIMUM RATING (Ta=25°C)

PARAMETER RATINGS SYMBOL(UNIT) OTHERS Supply Voltage +7.0 VDD (V) Power Dissipation 300 PD (mW) SSOP14(ONLY) Operating Temperature Range -40 ∼ +85 Topr (°C) Storage Temperature Range -50 ∼ +150 Tstg (°C)

■ ELECTRICAL CHARACTERISTICS (V+=3.5V,Crefin=10pF,Cref=1uF,f=1kHz,Ta=25°C unless otherwise noted)

● SUPPLY

TEST

PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT CIRCUIT

Operating Current ICC - 5.0 7.5 MA 1 RL=∞ Reference Voltage Vref 1.45 1.55 1.65 V 1 RL=∞

● OP-AMP SECTION

TEST

PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT CIRCUIT Input Offset Voltage Input Bias Current Voltage Gain 1 Maximum Output Voltage Swing 1 Input Common Mode Voltage Range Output Noise Voltage Common Mode rejection Ratio Supply Voltage Rejection Ratio Gain Bandwidth

Product

VＩO IIB GV1 VOM1 VICM VNO1 CMR SVR GB

RS≤10kΩ

- 1.0 6.0 MV 3 3 3 2

- 100 300 nA RL≤10kΩ

THD=1%, RL≥2.5kΩ

60 80 － -3.0 ( 0.7 ) 0.55～

2.55 −

0 ( 1.0 ) － -100

－ （－） − -90

ｄB ｄBV (Vrms)

−

Rs=600Ω/A-Weighted RS≤10kΩ RS≤10kΩ

V - ｄBV

( 10.0 ) ( 30.0 ) (uVrms)

ｄＢ ｄＢ ＭＨｚ

1 3 3 -

60 74 − 60 80 − －

2

−

NJM2172

TEST CIRCUIT

1 2 1 1

● EVR SECTION (VCNT=2.7V,RL=100Ω unless otherwise noted) PARAMETER SYMBOL Voltage Gain 2 Total Harmonic Distortion EVR Gain Output Noise Voltage 2 Maximum Output Voltage Swing 2 Channel Separation

ＧＶ２ THD GEVR VNO2

TEST CONDITION

MIN. TYP. MAX. UNIT -6.0 -3.0 0.0 ｄB

ＶＩＮ＝-10ｄＢＶ

0.15 1.0 % ＶＩＮ＝-10ｄＢＶ - ＶＩＮ＝-10ｄＢＶ/VCNT=2.7V～GND RS=600Ω/Ａ-Ｗｅｉｇｈｔed

80 90 - ｄB -

-5.0

-95 -85 ｄBV

(18.0) （56.0） (uVrms)-3.0

− -70

ｄBV (Vrms) ｄBV

VOM２ THD=1%

( 0.56 ) ( 0.71 )

2

CS ＶＩＮ＝-10ｄＢＶ/Ａ-Ｗｅｉｇｈｔed VCNT=1.5V ,VINA=VINB=-50dBV f=1kHz, A/B ; *1

VCNT=2.0V, VINA=VINB=-50dBV f=1kHz, A/B ; *1

−

-79

( 110 ) ( 320 ) (uVrms) 1

A/B１

EVR Deviation

A/B２

*１: Ach Amp with Bch=0dB

-3.0 0.0 3.0 ｄＢ

-3.0 0.0 3.0 1

NJM2172

■ TEST CIRCUIT 1 SW3 1u A-Weight 10k VO1 2.5k V SW4 SW1

47u 1u A-Weight 10u 1u SW5 VO2 100 V a b SW2

600 10 9 ➃ ➁ ➂ ➀ VI1 VCA

EVR AMP OPAMP VREF AMP EVR Control EVR

①②③④⑤Ach12345pin

Bch141312116pin

➄

VCNT

Fig.1

Test circuit 1 show only Ach.

V VREF 8 7 A ICC V +47u

NJM2172

■ TEST CIRCUIT 2

1u

10k

VO3 2.5k V SW6 47u 1u 10k 20k 10u 1u VO4

100 VI2 V SW7

10 9 8 ➁ ➃ ➀ ➂

VCA EVR AMP OPAMP VREF AMP EVR Control EVR

①②③④⑤

Ach12345pin

Bch141312116pin 7 ➄

+VCNT V

Fig.2

Test circuit 2 show only Ach.

47u

NJM2172

■ TEST CIRCUIT 3

VCC

50k 50

NULL 50

10k VF 10k 10k 10k Ek Ec 50k 10u 1u V

SW9 SW8 ➁ 10 9 8 ➂ ➀ VCA VREF AMP OPAMP EVR AMP EVR Control EVR

①②③⑤

Ach1235pin

Bch1413126pin

7 ➄

+ V

Fig.3

Test circuit 3 show only Ach.

47u

NJM2172

■ PIN INFORMATION

Pin No. 1 2 3

Pin Name OP+IN A OP-IN A OPOUTA

Function

Ach OP-AMP + Input Ach OP-AMP – Input

Ach OP-AMP Output/

EVR Input

4 EVROUT A Ach EVR Output 5 VCNT A Ach EVR Control 6 VCNT B Bch EVR Control

+7 V Power Supply 8 GND GND 9 10 11 12 13 14

VREF REFIN EVROUT B OPOUT B OP-IN B OP+IN B

Internal reference Output Internal reference Input Bch EVR Output Bch OP-AMP Output/

EVR Input

Bch OP-AMP – Input Bch OP-AMP + Input

NJM2172

■ EQUIVALENT CIRCUIT Term. No. Term. Name Equivalent Circuit 14k VTerminal Voltage Note 1 2 13 14 OP+INA OP-INA OP-INB OP+INB 2,13 1,14 1.55V - V100 3 12 OPOUTA OPOUTB 1.55V 3,12 OPOUTA/OPOUTB Load: RL≥2.5kΩ 10 4 11 EVROUTA EVROUTB V4,11 1.55V EVROUTA/EVROUTB Load: RL≥100Ω

Term. No.

NJM2172

Term. Name Equivalent Circuit V+ Terminal Voltage Note 5,6 5 6 VCNT A VCNT B - 1k 26k Input EVR control voltage V+ 40k 10 9 9 10 VREF REFIN 52k - Terminal Voltage is 52/(52+40)X +(V-VBE) RL≥2kΩ

NJM2172

■ APPLICATION CIRCUIT 1

Voltage follower

10k 1u VIN

47u 10u RL ➀ ➁ ➂ VCA OPAMP EVR EVR Control EVR AMP VREF AMP 1u ➃ 10 9 8 AchBch①114②213③312④411⑤5pin6pin➄ 7 47u VCNT V + Fig.4

Application circuit 1 show only Ach.

NJM2172

■ APPLICATION CIRCUIT 2

Invert Circuit (Gv=6dB)

10k 1u VIN

47u 10k 20k RL ➀ ➁ ➂ VCA OPAMP EVR EVR Control EVR AMP VREF AMP 10u 1u ➃ 10 9 8 AchBch①114②213③312④411⑤5pin6pin➄ 7 VCNT V +47u Fig.5

Application circuit 2 show only Ach.

NJM2172

■ TYPICAL CHARACTERISTIC

電源電圧 対 消費電流 特性例 Ta=25℃Quiescent Current vs. Supply Voltage Ta=25°C 8.0電源電圧 対 内部基準電圧 特性例 Ta=25℃Internal Reference Voltage vs. Supply Voltage Ta=25°C 3.06.04.0VREF [V]2.53.03..0V+ [V]4.55.05.5ICC [mA]2.02.01.00.00.02.53.03..0V+ [V]周囲温度 対 内部基準電圧 特性例 V+=3.5VInternal Reference Voltage vs. Temperature V+=3.5V 3.04.55.05.5周囲温度 対 消費電流 特性例 V+=3.5VQuiescent Current vs. Temperature V+=3.5V 8.06.0ICC [mA]2.0VREF [V]1.00.04.02.00.0-500Ta [℃]50100-500Ta [℃]50100

Input Offset Voltage vs. Supply Voltage Ta=25°C 電源電圧 対 入力オフセット電圧 特性例 Ta=25℃3.02.0VIO [mV]1.00.0-1.0-2.0-3.02.53.03..0V+ [V]4.55.05.50IB [nA]200300Input Bias Current vs. Supply Voltage Ta=25°C 電源電圧 対 入力バイアス電流 特性例 Ta=25℃1002.53.03..0V+ [V]4.55.05.5Input Offset Voltage vs. Temperature Ta=25°C 周囲温度 対 入力オフセット電圧 特性例 V+=3.5V3.02.0VIO [mV]1.00.0-1.0-2.0-3.0-500Ta [℃]501000IB [nA]200300Input Bias Current vs. Temperature Ta=25周囲温度 対 入力バイアス電流 特性例 V+=3.5V°C 100-500Ta [℃]50100

NJM2172

Voltage Gain 1 vs. Frequency 電圧利得 対 周波数 特性例V+=3.5V,Ta=25℃,RL=2.5kΩ10080GV1 [dB]60402000.001Voltage Gain 1 / Phase vs. Frequency 電圧利得／位相 対 周波数 特性例V+=3.5V,Ta=25℃,RL=2.5kΩ,40dB反転AmpGV1 [dB]0.010.1110f [kHz]1001000100003020100-100.1Gain 電圧利得-90-150-21010000110100ｆ [kHz]1000周囲温度 対1 電圧利得１ 特性例 V+=3.5VVoltage Gain vs. Temperature V+=3.5V 150150Common mode Rejection Ratio vs. Temperature V+=3.5V 周囲温度 対 同相信号除去比 特性例 V+=3.5VGV1 [dB]100CMR [dB]10050500-500Ta [℃]501000-500Ta [℃]50100Supply Voltage Rejection Ratio vs. Temperature V+=3.5V 周囲温度 対 電源電圧除去比 特性例 V+=3.5V15010全高調波歪率(OPAMP) 対 出力レベル 温度特性例V+=3.5V,f=1kHz,BW=400Hz-30kHzTotal Harmonic Distortion vs. Output Level(Temperature) SVR [dB]100THD [%]10.185℃、25℃－40℃500.010-500Ta [℃]501000.001-60-40-20Output Level [dBV]020φ [°]7060504030Phase 位相-30

NJM2172

Maximum Output Voltage 1 vs. Supply Voltage 電源電圧 対 最大出力電圧１ 特性例RL=2.5kΩ,f=1kHz,THD=1%,Ta=25℃10.0Maximum Output Voltage 1 vs. Load Resistance 負荷抵抗 対 最大出力電圧１ 特性例V+=3.5V,f=1kHz,THD=1%,Ta=25℃10.0 VOM１ [dBV] VOM１ [dBV]0.00.0-10.0-10.0-20.02.53.5V+ [V]4.55.5-20.00.11RL [kΩ]Voltage Gain 2 / Supply Voltage vs. EVR control Voltage EVRコントロール電圧 対 電圧利得2 電源電圧特性例f=1kHz,Vin=-10dBV,Ta=25℃10100Voltage Gain 2 vs. EVR control Voltage EVRコントロール電圧 対 電圧利得2 特性例V+=3.5V,f=1kHz,Vin=-10dBV,Ta=25℃200-20GV2 [dB]-40-60-80-100-12000.511.5VCNT [V]22.53GV2 [dB]200-20-40-60-80-100-12000.511.522.53VCNT [V]Voltage Gain 2 / Temperature vs. EVR control Voltage EVRコントロール電圧 対 電圧利得2 温度特性例V+=3.5V,f=1kHz,Vin=-10dBV200-20GV2 [dB]-40-60-80-10000.511.5VCNT [V]22.533.5V,5.5V2.7V

Voltage Gain 2 / Frequency vs. EVR control Voltage EVRコントロール電圧 対 電圧利得2 周波数特性例V+=3.5V,Vin=-10dBV,Ta=25℃200-20GV2 [dB]-40-60-80-100-120-12000.511.5VCNT [V]22.53

NJM2172

全高調波歪率(EVRV+=3.5V,Ta=25℃10Total Harmonic Distortion vs. Output Level ( Frequency ) Total Harmonic Distortion vs. Output Level ( Temperature ) 全高調波歪率(EVR) 対 出力レベル 温度特性例V+=3.5V,f=1kHz,BW=400Hz-30kHz10THD [%]1f=10kHzBW=22Hz-80kHz1THD [%]－40℃0.1f=100Hz,1kHzBW=22Hz-22kHz85℃、25℃0.10.01-60-40-20Output Level [dBV]0200.01-60-40-20Output Level [dBV]020Output Noise Voltage 2 vs. EVR Control Voltage EVRコントロール電圧 対 出力雑音電圧2 特性例V+=3.5V,Ta=25℃,A-Weighted0-20VNO2 [dBVOutput Noise Voltage 2 vs. Temperature 周囲温度 対 出力雑音電圧2 特性例V+=3.5V,VCNT=2.7V,A-Weighted0-20VNO2 [dBV]-40-60-80-100-40-60-80-100-12001VCNT [V]23-120-500Ta [℃]50100Maximum Output Voltage 2 vs. Supply Voltage 電源電圧 対 最大出力電圧2 特性例RL=100Ω,f=1kHz,THD=1%,Ta=25℃Maximum Output Voltage 2 vs. Load Resistance 負荷抵抗 対 最大出力電圧２ 特性例V+=3.5V,f=1kHz,THD=1%,Ta=25℃10.010.0 VOM2 [dBV]-10.0VOM2 [dBV]2.53.5V+ [V]4.55.50.00.0-10.0-20.0-20.00.010.1RL [kΩ]110

NJM2172

EVRコントロール電圧 対 チャンネルセパレーション 特性例V+=3.5V,Vin=-10dBV,f=1kHz,Ta=25℃,A-Weighted0-20CS [dBV]-40-60-80A→BChannel Separation vs. EVR Control Voltage Channel Separation vs. Supply Voltage 電源電圧 対 チャンネルセパレーション 特性例VCNT=2.7V,Vin=-10dBV,f=1kHz,Ta=25℃,A-Weighted0-20-40CS [dBV]B→A-60-80-100B→A-100-12001VCNT [V]EVRコントロール電圧 対 EVR減衰量偏差 特性例V+=3.5V,Vin=-50dBV,f=1kHz,Ta=25℃,A-Weighted32CS [dBV]10-1-2-301VCNT [V]23A→B23-1202.533.V+ [V]電源電圧 対 EVR減衰量偏差 特性例 VCNT=2.7V,Vin=-50dBV,f=1kHz,Ta=25℃,A-Weighted321AB [dB]0VCNT=1.5V,2V4.555.5Channel Separation vs. EVR Control Voltage EVR Deviation vs. Supply Voltage -1-2-32.533.V+ [V]4.555.5EVR Deviation vs. Frequency 周波数 対 EVR減衰量偏差 特性例VCNT=2.7V,Vin=-50dBV,Ta=25℃321AB [dB]0VCNT=1.5V,2VEVR Deviation vs. Temperature 周囲温度 対 EVR減衰量偏差 特性例V+=3.5V,Vin=-50dBV,f=1kHz,VCNT=2.7V,A-Weighted321AB [dB]0VCNT=1.5V,2V-1-2-30.01-1-20.11f [kHz]10100-3-500Ta [℃]50100

NJM2172

[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.