NTE NTE1221 Datasheet

NTE1221

Integrated Circuit

Stereo Preamp

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)

Maximum Supply Voltage, V
Collector–Base Voltage (Q1), V
Collector–Emitter Voltage (Q1), V
Emitter–Base Voltage (Q1), V
Collector Current (Q1), I

C

Operating Temperature Range, T
Storage Temperature Range, T

max 25V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

CBO

CEO

EBO

opr

stg

20V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–30° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Recommended Operatin Conditions:

Recommended Supply Voltage, V

Electrical Characteristics:

Parameter Symbol Test Conditions Min Typ Max Unit

Dissipation Current I4, I
Voltage Gain VG Vi = 0.5mV 57 61 – dB
Output Voltage V
Bandwidth BW Vi = 0.5mV, –3dB – 400 – kHz
Total Harmonic Distortion THD VO = 0.45V, RNF = 100Ω – 0.5 0.9 %
Input Resistance r
Output Resistance r
Crosstalk CT – –40 – dB
Noise Voltage Converted to Input V

Transistor Characteristics

Collector Cutoff Current I
Emitter Cutoff Current I
DC Current Gain h
Collector–Emitter Saturation Voltage V

(TA = +25°C, VCC = 6V, f = 1kHz unless otherwise specified)

CC

(TA = +25°C unless otherwise specified)

13

THD = 5%, RNF = 100Ω 1.0 1.5 – V

O

i

o

VCC = 10V, Rg = 600Ω, NAB 4.8cm/s – 1.0 3.0 µV

NI

CBO
EBO

FE

CE(sat)IC

VCB = 15V – – 1.0 µA
VEB = 4V – – 1.0 µA
VCB = 3V, IC = 1mA 70 – –

= 1mA, IC/IB = 10mA – 0.5 – V

– 3.5 6.0 mA

– 90 – kΩ
– 1 – kΩ

6V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pin Connection Diagram

Invert Input Amp 2

Gain Adjust

Output Amp 1

V

Amp 1

CC

Non–Invert Input Amp 1

1
2

3
4
5
6Invert Input Amp 1
7Gain Adjust

14 8

Non–Invert Input Amp 2

14

VCC Amp 2

13

Output Amp 2

12
11

Freq Comp Amp 2

10

Q1 Base
Q1 Collector

9
8 Q1 Emitter

17

.785 (19.95) Max

.300 (7.62)

.200 (5.08)

Max

.100 (2.45)

.099 (2.5) Min

.600 (15.24)