Philips NE614AN, NE614AD, SA614AD, SA614AN Datasheet

Philips Semiconductors

SA614A

Low power FM IF system

Product specification
Replaces data of December 15, 1994

1997 Nov 07

RF COMMUNICATIONS PRODUCTS

IC17 Data Handbook

Philips Semiconductors Product specification

SA614ALow power FM IF system

2

1997 Nov 07 853-0594 18663

DESCRIPTION

The SA614A is an improved monolithic low-power FM IF system
incorporating two limiting intermediate frequency amplifiers,
quadrature detector, muting, logarithmic received signal strength
indicator, and voltage regulator. The SA614A features higher IF
bandwidth (25MHz) and temperature compensated RSSI and
limiters permitting higher performance application compared with the
SA604. The SA614A is available in a 16-lead dual-in-line plastic
and 16-lead SO (surface-mounted miniature) package.

FEA TURES

•Low power consumption: 3.3mA typical

•Temperature compensated logarithmic Received Signal Strength

Indicator (RSSI) with a dynamic range in excess of 90dB

•Two audio outputs - muted and unmuted

•Low external component count; suitable for crystal/ceramic filters

•Excellent sensitivity: 1.5µV across input pins (0.22µV into 50Ω

matching network) for 12dB SINAD (Signal to Noise and Distortion
ratio) at 455kHz

•SA614A meets cellular radio specifications

PIN CONFIGURATION

D and N Packages

IF AMP DECOUPLING

1
2
3
4
5
6
7
8

9

10

11

12

13

14

16
15

GND

MUTE INPUT

RSSI OUTPUT

MUTE AUDIO OUTPUT

UNMUTE AUDIO OUTPUT

QUADRATURE INPUT

IF AMP INPUT
IF AMP DECOUPLING
IF AMP OUTPUT

GND
LIMITER INPUT

LIMITER DECOUPLING
LIMITER DECOUPLING
LIMITER

V

CC

SR00323

Figure 1. Pin Configuration

APPLICATIONS

•Cellular radio FM IF

•High performance communications receivers

•Intermediate frequency amplification and detection up to 25MHz

•RF level meter

•Spectrum analyzer

•Instrumentation

•FSK and ASK data receivers

ORDERING INFORMATION

DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #

16-Pin Plastic Dual In-Line Package (DIP) -40 to +85°C SA614AN SOT38-4
16-Pin Plastic Small Outline (SO) package (Surface-mount) -40 to +85°C SA614AD SOT109-1

Philips Semiconductors Product specification

SA614ALow power FM IF system

1997 Nov 07

3

BLOCK DIAGRAM

16 15 14 13 12 11 10 9

87654321

SIGNAL

VOLTAGE

IF
AMP

LIMITER

REGULATOR

STRENGTH

GND

V

CC

GND

MUTE

QUAD

DET

LIMITER

SR00324

Figure 2. Block Diagram

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNITS

V

CC

Single supply voltage 9 V

T

STG

Storage temperature range -65 to +150

°C

T

A

Operating ambient temperature range SA614A -40 to +85

°C

θ

JA

Thermal impedance D package

N package

90
75

°C/W
°C/W

DC ELECTRICAL CHARACTERISTICS

VCC = +6V, TA = 25°C; unless otherwise stated.

LIMITS

SYMBOL PARAMETER TEST CONDITIONS SA614A UNITS

MIN TYP MAX

V

CC

Power supply voltage range 4.5 8.0 V

I

CC

DC current drain 2.5 3.3 4.0 mA
Mute switch input threshold (ON)

(OFF)

1.7

1.0

V
V

Philips Semiconductors Product specification

SA614ALow power FM IF system

1997 Nov 07

4

AC ELECTRICAL CHARACTERISTICS

Typical reading at TA = 25°C; VCC = +6V , unless otherwise stated. IF frequency = 455kHz; IF level = -47dBm; FM modulation = 1kHz with
+

8kHz peak deviation. Audio output with C-message weighted filter and de-emphasis capacitor. Test circuit Figure 3. The parameters listed
below are tested using automatic test equipment to assure consistent electrical characterristics. The limits do not represent the ultimate
performance limits of the device. Use of an optimized RF layout will improve many of the listed parameters.

LIMITS

SYMBOL PARAMETER TEST CONDITIONS SA614A UNITS

MIN TYP MAX

Input limiting -3dB Test at Pin 16 -92 dBm/50Ω
AM rejection 80% AM 1kHz 25 33 dB
Recovered audio level 15nF de-emphasis 60 175 260 mV

RMS

Recovered audio level 150pF de-emphasis 530 mV

RMS

THD Total harmonic distortion -30 -42 dB

S/N Signal-to-noise ratio No modulation for noise 68 dB

RF level = -118dBm 0 160 800 mV

RSSI output

1

RF level = -68dBm 1.7 2.50 3.3 V

RF level = -18dBm 3.6 4.80 5.8 V
RSSI range R4 = 100k (Pin 5) 80 dB
RSSI accuracy R4 = 100k (Pin 5) +2.0 dB
IF input impedance 1.4 1.6 kΩ
IF output impedance 0.85 1.0 kΩ
Limiter input impedance 1.4 1.6 kΩ
Unmuted audio output resistance 58 kΩ
Muted audio output resistance 58 kΩ

NOTE:

1. SA614A data sheets refer to power at 50Ω input termination; about 21dB less power actually enters the internal 1.5k input.
SA614A (50) SA614A (1.5k)/SA615 (1.5k)

-97dBm -118dBm

-47dBm -68dBm
+3dBm -18dBm

The SA615 and SA614A are both derived from the same basic die. The SA615 performance plots are directly applicable to the SA614A.

Philips Semiconductors Product specification

SA614ALow power FM IF system

1997 Nov 07

5

IF INPUT

GND

RSSI AUDIO DATA

GND

GND

OFF

ON

V

CC

SIGNETICS

NE614 TEST CKT

M

U

T

E

100nF + 80 – 20% 63V K10000–25V Ceramic

455kHz Ceramic Filter Murata SFG455A3

100nF +

10% 50V

100nF +

10% 50V

455kHz (Ce = 180pF) TOKO RMC 2A6597H
51Ω +

1% 1/4W Metal Film

150pF +

2% 100V N1500 Ceramic

6.8µF +

20% 25V Tantalum

1nF +

10% 100V K2000-Y5P Ceramic

15nF +

10% 50V

100nF +

10% 50V

C1
C2
C3
C4

C5
C6
C7
C8

C9
C10
C11
C12

F1

F2

R1

100nF +10% 50V

100nF +

10% 50V

100nF +10% 50V

10pF +

2% 100V NPO Ceramic

R2

R3

R4

1500Ω +

1% 1/4W Metal Film

1500Ω +

5% 1/8W Carbon Composition

100kΩ +

1% 1/4W Metal Film

16 15 14 13 12 11 10 9

87654321

NE614A TEST CIRCUIT

SA614A

INPUT

Q = 20 LOADED

MUTE
INPUT

RSSI

OUTPUT

AUDIO

OUTPUT

DATA

OUTPUT

C

5

C

3

C

6

S

1

C

10

C

8

F

2

C

12

C

9

F

1

C

7

C

11

R

1

R

2

R

3

C

4

C

1

C

2

R

4

IF INPUT

GND

RSSI AUDIO DATA

GND

GND

OFF

ON

V

CC

SIGNETICS

NE614 TEST CKT

M

U

T

E

SR00325

Figure 3. SA614A Test Circuit