Datasheet UPC2798GR-E1, UPC2798GR Datasheet (NEC)

DATA SHEET

BIPOLAR ANALOG INTEGRATED CI RCUIT

µµµµ

PC2798GR

IF DOWN CONVERTOR IC FOR DIGITAL CATV

DESCRIPTION

The µPC2798GR is a Silicon monolithic IC designed for use as QAM IF down convertor for digital CATV. This IC

consists of AGC amplifier, mixer, oscillator, and video amplifier.

The package is 20 pins SSOP suitable for high-density surface mount.

FEATURES

• Low distortion AGC amplifier IIP3 = −9 dBm

• On chip IF convertor fin = 30 to 250 MHz

• On chip video amplifier Vout = 3.0 V

• Supply voltage: 5 V

• Packaged in 20 pins SSOP suitable for high-density surface mount.

P-P

(differential, @ RL = 1kΩ)

ORDERING INFORMATION

PART NUMBER PACKAGE PACKAGE STYLE

µ

PC2798GR-E1 20 pins plastic SSOP (225 mil) Embossed tape 12 mm wide. 2. 5 k/REEL.

Pin 1 indicates pull-out di rection of tape

: For evaluation sample order, please contact your local NEC office.

*

(Part number for sample order:

Please refer to “Quality grade on NEC Semiconductor Devices” (Document number C11531E) published by NEC

Corporation to know the specification of quality grade on the devices and its recommended applications.

PC2798GR)

µ

The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.

Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.

Document No. P11998EJ3V0DS00 (3rd edition)
Date Published October 1999 N CP(K)
Printed in Japan

Caution electro-static sensitive device

The mark shows major revised points.

©

1996, 1999

INTERNAL BLOCK DIAGRAM AND PIN CONFIGURATION (Top View)

µµµµ

PC2798GR

AGC IN1

AGC IN2

AGC

V

VCC1

OSC OUT

GND

OSC B2

OSC C1

OSC C2

OSC B1

1

2

3

4

5

6

7

8

9

10

AGC Amp

OSC OUT
Buffer Amp

OSC

MIXER

OSC Buffer
Amp

VIDEO
Amp

20

19

18

17

16

15

14

13

12

11

GND

MIX OUT2

MIX OUT1

G1A

G1B

INA

INB

CC

2

V

OUT1

OUT2

2

Data Sheet P11998EJ3V0DS00

PIN EXPLANATIONS

1

4

2

AGC
control

Reg

3

4

AGC
control

10

948

7

Reg
Reg

µµµµ

PC2798GR

Pin No. Symbol

1 AGC IN1 1.5 Input pin of IF signal.

2 AGC IN2 1.5

3V

4 Vcc1 5.0 Power supply pin of IF down convertor block.

5OSC

AGC

OUT

Pin Voltage

(V, TYP.)

0 to 5

4.0

Explanation Equivalent Circuit

1pin is same phase and 2pin is oppos i te
phase at balance input.
In case of single input, 1pin or 2pin should
be grounded through capacitor.

Automatic gain control pi n.
This pin’s bias govern the A G C out put level.

AGC

AGC

= 0 V

= 5 V

Minimum gain at V
Maximum gain at V
Recommend to use by deviding AGC voltage
with externally resis tor (ex. 100 kΩ).

Must be connected bypass capacitor to
minimize ground impedance.

Output pin of Oscillator frequency.
Connected to PLL symthesizer IC’s input pin.

4

6 GND 0.0 Ground pin.

7 OSC B2

8OSC C1

9OSC C2

10 OSC B1

2.4

4.6

4.6

2.4

Must be connected to the system ground
with minimum inductanc e.
Ground pattern on the board should be
formed as wide as possible.

Internal oscillator consist in balance amplifier.
7 and 8pins, 9 and 10 pins should be
externally connected to oscillate wit h active
feedback loop.
Connected LC resonator between 7pin and
10pin.

Data Sheet P11998EJ3V0DS00

5

Reg

3

PIN EXPLANATIONS

12
11

13

REG

Pin No. Symbol

Pin Voltage
(V, TYP.)
( ) is
value at
Vcc2 = 9 V.

Explanation Equivalent Circuit

µµµµ

PC2798GR

11 OUT2 2.5

(4.7)

Output pin of video amplifi er.

L

In case of R
voltage equal 3 V

= 1 kΩ, differential output

P-P

.
OUT1 and INA are same phase.
OUT2 and INB are same phase.

11 OUT1 2.5

(4.7)

13 Vcc2 5 to 9 Power supply pi n of video amplifier.

Must be connected bypass capacitor to
minimize ground impedance.

14 INB

15 INA

2.5

(4.1)

2.5

Signal input pin of video ampl i f i er.
This pin is high impedance.

(4.1)

16 G1B 1.7

(3.3)

Gain control pin of video ampli fier.
Maximum gain at G1A-GIB = short .
Minimum gain at G1A-G1B = open.
Gain is able to adjust by i ns erting arbitrary
resistor between 16pin and 17pin.

17 G1A

1.7

(3.3)

17

REG

15

13

14 16

18 MIX

19 MIX

20 GND

4

4

OUT1

3.7 Output pin of mixer.
This output pin features low-i m pedance
because of its emitter-follower output port.

18

3.7

REG

19

OUT2

0.0

Ground pin.
Must be connected to the system ground
with minimum inductanc e.
Ground pattern on the board should be
formed as wide as possible.

Data Sheet P11998EJ3V0DS00

µµµµ

PC2798GR

ABSOLUTE MAXIMUM RATINGS (TA = 25

C unless otherwise specified)

°°°°

PARAMETER SYMBOL RATING UNIT TEST CONDITIONS
Supply Voltage 1 Vcc1 6.0 V Mixer block
Supply Voltage 2 Vcc2 6.0 V Video Amp block
Power Dissipation P
Operating Ambient Temperature T
Storage Temperature T

A

D

A

stg

430 mW

40 to +85

−

55 to +150

−

T

C

°

C

°

= 85 °C

*1

PARAMETER SYMBOL RATING UNIT TEST CONDITIONS
Supply Voltage 1 Vcc1 6.0 V Mixer block
Supply Voltage 2 Vcc2 11.0 V Video Amp block
Power Dissipation P
Operating Ambient Temperature T
Storage Temperature T

Mounted on 50 × 50 × 1.6 mm double copper epoxy glass board.

*1.

D

A

stg

500 mW

40 to +75

−

55 to +150

−

A

T

C

°

C

°

= 75 °C

*1

RECOMMENDED OPERATING RANGE

PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Supply Voltage 1 Vcc1 4.5 5.0 5.5 V
Supply Voltage 2 Vcc2 4.5 5. 0 10.0 V
Operating Ambient Temperature 1
Operating Ambient Temperature 2

@Vcc1 = Vcc2 = 4.5 to 5.5 V

*2.

@Vcc1 = 4.5 to 5.5 V, Vcc2 = 4.5 to 10.0 V

*3.

ELECTRICAL CHARACTERISTICS (T

*2

*3

A

= 25

TA1
TA2

40 +25 +85

−

40 +25 +75

−

C)

°°°°

C

°

C

°

PARAMETER SYMBOL MIN. TYP. MAX. UNIT TEST CONDITIONS
Total Block (RL = 1 kΩ, by measurement circ ui t 5)
Circuit Current 1 Icc1 24.0 35.5 45.0 mA no i nput signal, Vcc1 = Vc c 2 = 5 V

AGC

V

Maximum Conversion Gain 1 CG
Maximum Conversion Gain 2 CG
Minimum Conversion Gain 1 CG
Minimum Conversion Gain 2 CG

MAX

1 68.0 74.0 76.0 dB

MAX

2



MIN

1 32.0 39.0 43.0 dB

MIN

2



58.0

22.0





dB

dB

= 4.0 V, G1A-G1B pins: s hort

AGC

V

= 4.0 V, G1A-G1B pins: open

AGC

V

= 1.0 V, G1A-G1B pins: s hort

AGC

V

= 1.0 V, G1A-G1B pins: open

Circuit Current 2 Icc1 32.0 47.0 60.0 mA no i nput signal, Vcc1 = 5 V, Vcc2 = 9 V

AGC

V

Maximum Conversion Gain 3 CG
Maximum Conversion Gain 4 CG
Minimum Conversion Gain 3 CG
Minimum Conversion Gain 4 CG

MAX

3 72.0 78.5 81.0 dB

MAX

MIN

MIN

4



3



4



59.0

43.5

22.5





dB
dB
dB

= 4.0 V, G1A-G1B pins: s hort

AGC

V

= 4.0 V, G1A-G1B pins: open

AGC

V

= 1.0 V, G1A-G1B pins: s hort

AGC

V

= 1.0 V, G1A-G1B pins: open

*4

*4

*4

*4

*4

*4

*4

*4

Data Sheet P11998EJ3V0DS00

5

µµµµ

PC2798GR

ELECTRICAL CHARACTERISTICS (TA = 25

C)

°°°°

PARAMETER SYMBOL MIN. TYP. MAX. UNIT TEST CONDITIONS

AGC Amplifier + Mixer Block (@Vcc1 = 5 V, RL = 50 Ω, by measurement circ ui t 1)
Circuit Current 3 Icc3 15.0 23.0 28.0 mA no i nput signal
RF Input Frequency Range f
OSC Frequency Range f
IF Output Frequency Range f
Minimum Conversion Gain 5 CG
Minimum Conversion Gain 5 CG
AGC Dynamic Range GCR 26 32
Noise Figure NF
AGC Voltage High Level V
AGC Voltage Low Level V

RF

OSC

IF

MAX

MIN

30
30

DC

5



5

−



AGC

H4.0

AGC

L







25

7

250 Mhz
250 Mhz
150 Mhz





9





1.0 V @Minimum Gain

dB
dB
dB V
dB

AGC

V

AGC

V

AGC

SSB, V

*4

= 4.0 V

*4

= 1.0 V

= 1.0 to 4.0 V

AGC

= 4.0 V (@Maximum Gain)

V @Maximum Gain

Video Amp. Block (@Vc c2 = 5 V, RL = 1 kΩ, Input: 51 Ω terminated, by measurement circuit 3)
Circuit Current 4 Icc4 9.0 12.5 17.0 mA no input si gnal
Differential Gain 1 G1



200



V/V G1A-G1B pins: short, Vout = 3.0 V

fin = 10 MHz

Differential Gain 2 G2



26.0



V/V G1A-G1B pins: open, Vout = 3.0 V

fin = 10 MHz
Video Amp. Block (@Vc c2 = 9 V, RL = 1 kΩ, Input: 51 Ω terminated, by measurement circuit 3)
Circuit Current 5 Icc5 17.0 24.0 32.0 mA no i nput signal
Differential Gain 3 G3



385



V/V G1A-G1B pins: short, Vout = 3.0 V

fin = 10 MHz
Differential Gain 4 G4



28.5



V/V G1A-G1B pins: open, Vout = 3.0 V

fin = 10 MHz
Video Amp. Block (@V cc2 = 5 V or 9 V: Common, RL = 1 kΩ, Input: 51 Ω terminated, by measurement circuit 3)
Output Voltage V

OUT

Bandwidth 1 BW
Bandwidth 2 BW
Input Resistance 1 Rin1
Input Resistance 2 Rin2
Input Capacitance Cin



G1

G2







3.0
50
50

3.5

9.7

1.6








P-P

V

RL = 1 kΩ, differential
MHz G1 (G1A-G1B pi ns: short)
MHz G2 (G1A-G1B pi ns: open)

k

G1 (G1A-G1B pins: short)

Ω

k

G2 (G1A-G1B pins: open)

Ω

pF

P-P

P-P

P-P

P-P

*4, 5

,

,

,

,

RF

= 45 MHz, f

.f

*4

. By measurement circuit 2

*5

6

OSC

= 55 MHz, P

OSC

= −10 dBm

Data Sheet P11998EJ3V0DS00

µµµµ

PC2798GR

STANDARD CHARACTERISTICS (TA = 25

PARAMETER SYMBOL

C)

°°°°

VALUE FOR

REFERENCE

UNIT TEST CONDITIONS

AGC Amplifier + Mixer B l ock (@Vcc1 = 5 V, by measurement circuit 1)

AGC

= 1.0 V @Minimum Gain

AGC Input Intercept Poi nt 1 AGC

IIP

9dBm

−

3

1

V

Video Amp. Block (RL = 50 Ω, input: 51 Ω terminated, by measurement circuit 4)
Single-end Gain 1 AVS1 40.0 dB VCC2 = 5 V, G1A-G1B pins: short
Single-end Gain 2 AVS2 22.5 dB VCC2 = 5 V, G1A-G1B pins: open
Single-end Gain 3 AVS3 45.0 dB VCC2 = 9 V, G1A-G1B pins: short
Single-end Gain 4 AVS4 23.5 dB VCC2 = 9 V, G1A-G1B pins: open
Input Intercept Point 2 IIP32

11.5 dBm VCC2 = 5 V, G1A-G1B pins: open

−

fin1 = 9 MHz, fin2 = 11 MHz

Input Intercept Point 3 IIP33

5.0 dB m VCC2 = 9 V, G1A-G1B pins: open

−

fin1 = 9 MHz, fin2 = 11 MHz
Video Amp. Block (@V cc2 = 5 V or 9 V: Common, by m eas urement circuit 3)
Common Mode Rejection

CMRR 80 dB VCM = 1 V

P-P

, f = 100 kHz

Ratio
Power Supply Rejection

PSRR 70 dB

Ratio
Rise Time
Propagation Delay Time

R

τ

PD

τ

2.6 ns

4.4 ns
Total Block (RL = 1 kΩ, by measurement circ ui t 5)
Input Intercept Point 4 IIP34

14.0 dBm VCC1 = VCC2 = 5 V, V

−

AGC

= 1 V,

G1A-G1B pins: short

Input Intercept Point 5 IIP35

8.0 dB m VCC1 = VCC2 = 5 V, V

−

AGC

= 1 V,

G1A-G1B pins: open

Input Intercept Point 6 IIP36

7.5 dB m VCC1 = 5 V, VCC2 = 9 V, V

−

AGC

G1A-G1B pins: open

*6

*6

*6

= 1 V,

*6

RF

1 = 44 MHz, fRF2 = 46 MHz, f

f

*6

OSC

= 55 MHz, P

Data Sheet P11998EJ3V0DS00

OSC

= −10 dBm

7

TYPICAL CHARACTERISTICS
(by measurement circuit 5, TA = 25 °C, f

OSC

= fRF + 10 MHz, P

OSC

=

−−−−

10 dBm)

µµµµ

PC2798GR

CONVERSION GAIN vs. INPUT FREQUENCY

80

V

AGC

= 4 V

60

V

AGC

= 3 V

40

V

AGC

= 1 V

20

CG - Conversion Gain - dB

V

CC

1 = 5 V

CC

2 = 5 V

V
1 kΩ Load
G1A–G1B: short

0

0 50 100 150 200 250

fRF - Input Freqency - MHz

CONVERSION GAIN vs. INPUT FREQUENCY

80

V

AGC

= 4 V

AGC

= 3 V

V

60

AGC

= 1 V

V

40

20

CG - Conversion Gain - dB

V

CC

1 = 5 V

CC

2 = 9 V

V
1 kΩ Load
G1A–G1B: short

0

0 50 100 150 200 250

fRF - Input Frequency - MHz

CONVERSION GAIN vs. INPUT FREQUENCY CONVERSION GAIN vs. INPUT FREQUENCY

80

80

V

AGC

60

40

20

CG - Conversion Gain - dB

= 4 V

AGC

= 3 V

V

AGC

= 1 V

V

VCC1 = 5 V, VCC2 = 5 V
G1A–G1B: open
1 kΩ load

0

0 50 100 150 200 250

fRF - Input Frequency - MHz

V

AGC

60

40

20

CG - Conversion Gain - dB

= 4 V

AGC

= 3 V

V

AGC

= 1 V

V

VCC1 = 5 V, VCC2 = 9 V
G1A–G1B: open
1 kΩ load

0

0 50 100 150 200 250

fRF - Input Frequency - MHz

8

Data Sheet P11998EJ3V0DS00

µµµµ

PC2798GR

TYPICAL CHARACTERISTICS
(by measurement circuit 5, TA = 25 °C, fRF = 45 MHz, P

CONVERSION GAIN vs. INTERMEDIATE FREQUENCY CONVERSION GAIN vs. INTERMEDIATE FREQUENCY

80

60

40

20

CG - Conversion Gain - dB

V

VCC1 = 5 V, VCC2 = 5 V
G1A–G1B: short
1 kΩ load

0

0 40 80 120 160

fIF - Intermediate Frequency - MHz

AGC

AGC

V

= 1 V

V

AGC

= 3 V

= 4 V

OSC

=

10 dBm)

−−−−

80

60

40

20

CG - Conversion Gain - dB

VCC1 = 5 V, VCC2 = 9 V
G1A–G1B: short
1 kΩ load

0

0 40 80 120 160

fIF - Intermediate Frequency - MHz

V

AGC

= 4 V

AGC

= 3 V

V

AGC

= 1 V

V

CONVERSION GAIN vs. INTERMEDIATE FREQUENCY CONVERSION GAIN vs. INTERMEDIATE FREQUENCY

80

60

V

AGC

40

20

CG - Conversion Gain - dB

= 4 V

AGC

= 3 V

V

VCC1 = 5 V, VCC2 = 5 V
G1A–G1B: open
1 kΩ load

0

0 40 80 120 160

fIF - Intermediate Frequency - MHz

80

60

V

AGC

40

20

CG - Conversion Gain - dB

= 4 V

AGC

= 3 V

V

VCC1 = 5 V, VCC2 = 9 V
G1A–G1B: open
1 kΩ load

0

0 40 80 120 160

fIF - Intermediate Frequency - MHz

Data Sheet P11998EJ3V0DS00

9

TYPICAL CHARACTERISTICS (by measurement circuit 1, TA = 25 °C)

µµµµ

PC2798GR

CIRCUIT CURRENT vs. SUPPLY VOLTAGE

50

no input
signal

AGC

= 0 V

V

40

30

20

- Circuit Current - mA

CC

I

10

0

024681012

V

CC

- Supply Voltage - V

Total

Mixer
+ AGC + VCO

Video Amp

CONVERSION GAIN vs. INTERMEDIATE FREQUENCY

30

AGC

= 4.0 V

20

V

10

CONVERSION GAIN vs. INPUT FREQUENCY

30

AGC

20

V

10

V

AGC

0

–10

V

AGC

CG - Conversion Gain - dB

–20

f

OSC

= f

RF

P

OSC

= –10 dBm

CC1 = 5 V

V

–30

0 50 100 150 200 250 300

f

+ 10 MH

Z

RF

- Input Frequency - MHz

NOISE FIGURE vs. AGC VOLTAGE

30

20

= 4.0 V

= 2.6 V

= 0.0 V

V

AGC

= 2.6 V

0

–10

fRF = 45 MH

CG - Conversion Gain - dBCG - Conversion Gain - dB

f

OSC

–20

P

OSC
CC1 = 5 V

V

–30

0 30 60 90 120 150 180 0 1 2 3 4 5

Z

= 55 to 210 MH

Z

= –10 dBm

IF

- Intermediate Frequency - MHz V

f

V

AGC

= 0.0 V

CONVERSION GAIN vs. AGC VOLTAGE

30

V

CC1 = 5 V

RF

= 45 MH

f

Z

PRF = –60 dBm

OSC

20

f
P

OSC

= 50 MH

Z

= –10 dBm

10

10

NF - Noise Figure - dB

V

CC1 = 5 V

RF

= 100 MH

f
f

OSC

= 120 MH

P

OSC

Z

= –10 dBm

DSB mode

0

OUTPUT POWER vs. INPUT POWER

–10

V

CC1 = 5 V
AGC

= 0 V

V

–20

RF

–30

–40

1 = 44 MH

f
fRF2 = 46 MH
f

OSC

= 55 MH

P

OSC

= –10 dBm

Z
Z
Z

–50

Z

AGC

- AGC Voltage - V

–60

- Output Power - dBm

out

0

P

–70

–80

10

–10

012345

AGC

- AGC Voltage - V

V

Data Sheet P11998EJ3V0DS00

–90

–60 –50 –40 –30 –20 –10 0

Pin - Input Power - dBm

STANDARD CHARACTERISTICS (by measurement circuit 3, TA = 25 °C)

µµµµ

PC2798GR

DIFFERENTIAL GAIN vs. INPUT FREQUENCY

400

VCC2 = 9 V

300

200

CC2 = 5 V

V

100

GVIDEO - Differential Gain - V/V

G1A–G1B: short
P

OUT = 1.5 Vp–p const.

0

0 20406080100

fin - Input Frequency - MHz

OUTPUT POWER vs. INPUT POWER

0

V

CC2 = 9 V

–10

CC2 = 5 V

V

DIFFERENTIAL GAIN vs. INPUT FREQUENCY

40

30

20

10

GVIDEO - Differential Gain - V/V

CC2 = 5 V

V

VCC2 = 9 V

G1A–G1B: open
P

OUT = 1.5 Vp–p const.

0

0 20406080100

fin - Input Frequency - MHz

OUTPUT POWER vs. INPUT POWER

0

V

–10

CC2 = 9 V

–20

V

CC2 = 5 V

–20

Pout - Output Power (50 Ω/1 kΩ) - dBm

fin = 10 MHz
G1A–G1B: short

–30

–40 –30 –20 –10 0

Pin - Input Power (50 Ω) - dBm

DIFFERENTIAL GAIN vs. EXTERNAL RESISTANCE

500

fin =10 MHz

400

300

V

200

CC2 = 5 V

V

100

GVIDEO - Differential Gain - V/V

CC2 = 9 V

0

short 30 43 56 100 246 2000 open

Resistance - Ω

–30

–40

Pout - Output Power (50 Ω/1 kΩ) - dBm

fin = 10 MHz
G1A–G1B: open

–50

–40 –30 –20 10 100

Pin - Input Power (50 Ω) - dBm

Data Sheet P11998EJ3V0DS00

11

STANDARD CHARACTERISTICS (by measurement circuit 4, TA = 25 °C)

µµµµ

PC2798GR

50

GAIN vs. INPUT FREQUENCY

40

30

- Gain - dB

20

VS

A

10

VCC2 = 5 V
G1A–G1B: short

0

0.1 1 10 100
Input Frequency fin - MHz

GAIN vs. INPUT FREQUENCY

50

40

50

GAIN vs. INPUT FREQUENCY

40

30

- Gain - dB

20

VS

A

10

VCC2 = 5 V
G1A–G1B: open

0

0.1 1 10 100
Input Frequency fin - MHz

GAIN vs. INPUT FREQUENCY

50

40

30

- Gain - dB

VS

20

A

10

VCC2 = 9 V
G1A–G1B: short

0

0.1 1 10 100
Input Frequency fin - MHz

OUTPUT POWER vs. INPUT POWER

20

0

–20

–40

–60

Pout - Output Power (50 Ω)/tone - dBm

–80

–50 –40 –30 –20 –10

VCC2 = 5 V
f1 = 9 MHz

2

= 11 MHz

f
G1A–G1B: open

Pin - Input Power (50 Ω)/tone - dBm

30

- Gain - dB

VS

20

A

10

VCC2 = 9 V
G1A–G1B: open

0

0.1 1 10 100
Input Frequency fin - MHz

OUTPUT POWER vs. INPUT POWER

20

0

–20

–40

–60

Pout - Output Power (50 Ω)/tone - dBm

–80

–50 –40 –30 –20 –10

VCC2 = 9 V
f1 = 9 MHz

2

= 11 MHz

f
G1A–G1B: open

Pin - Input Power (50 Ω)/tone - dBm

12

Data Sheet P11998EJ3V0DS00

STANDARD CHARACTERISTICS (by measurement circuit 5)

µµµµ

PC2798GR

OUTPUT POWER vs. INPUT POWER

0

–20

–40

CC

1 = 5 V

V
V

CC

–60

Pout - Output Power (50 Ω/1 kΩ)/tone - dBm

–80

–50 –40 –30 –20 –10 0

2 = 5 V
f1 = 44 MHz
f2 = 46 MHz
f

OSC =

55 MHz

P

OSC =

–10 dBm

G1A–G1B: open

OUTPUT POWER vs. INPUT POWER

0

–20

OUTPUT POWER vs. INPUT POWER

0

–20

–40

CC

1 = 5 V

V

–60

Pout - Power Pout (50 Ω/1 kΩ)/tone - dBm

–80

–50 –40 –30 –20 –10 0

VCC2 = 9 V
f

1 =

44 MHz
f2 = 46 MHz
f

OSC =

55 MHz

P

OSC =

–10 dBm

G1A–G1B: open

Pin - Input Power (50 Ω)/tone - dBmPin - Input Power (50 Ω)/tone - dBm

–40

CC

1 = 5 V

V

–60

Pout - Output Power (50 Ω/1 kΩ)/tone - dBm

–80

–50 –40 –30 –20 –10 0

VCC2 = 5 V
f

1 =

44 MHz
f2 = 46 MHz
f

OSC =

55 MHz

P

OSC =

–10 dBm

G1A–G1B: short

Pin - Input Power (50 Ω)/tone - dBm

Data Sheet P11998EJ3V0DS00

13

STANDARD CHARACTERISTICS
(by application circuit example: MIXER block, T

A

= 25 °C)

µµµµ

PC2798GR

CONVERSION GAIN vs. INPUT FREQUENCY

30

V

CC

1 = 5.5 V

V

CC

25

CC

V

1 = 5.0 V

1 = 4.5 V

CG - Conversion Gain - dB

f

RF

= 50 MHz

IF

= 10 MHz

f

RF

=

–50 dBm

P
V

AGC =

20

4 V

30 40 50 60

RF

- Input Frequency - MHz

f

CONVERSION GAIN vs. AGC VOLTAGE

30

f

RF

= 50 MHz

IF

= 10 MHz

f

RF

= –50 dBm

P

CC

1 = 4.5 V

V

20

V
V

CC

1 = 5.0 V

CC

1 = 5.5 V

30

NOISE FIGURE vs. AGC VOLTAGE

20

10

NF - Noise Figure - dB

f

RF

= 50 MHz

IF

= 10 MHz

f

CC

1 = 4.5 V

V

CC

1 = 5.0 V

V

CC

1 = 5.5 V

V
DSB

0

012345

V

AGC

- AGC Voltage - V

OUTPUT POWER vs. INPUT POWER

–10
–20
–30
–40

10

0

CG - Conversion Gain - dB

–10

0

12345

V

AGC

- AGC Voltage - V

OSCILLATOR FREQUENCY vs. TUNING VOLTAGE

70

60

50

40

- Oscillator Frequency - MHz

OSC

f

–50
–60
–70

Pout - Output Power - dBm

–80
–90

–100

–50 –40 –30 –20 –10 0 10

–60

Pin - Input Power - dBm

VCC1 = 5 V

RF1

= 45 MHz

f

RF2

= 46 MHz

f

OSC

= 55 MHz

f

AGC

= 0 V

V

14

30

VCC1 = 5 V

0

5101520

Vtu - Tuning Voltage - V

Data Sheet P11998EJ3V0DS00

MEASUREMENT CIRCUIT 1

<AGC + MIX block>

µµµµ

PC2798GR

10 nF

IN

V

VCC1

OSC OUT

OSC IN

AGC

220 nF

1 nF

100 k

10 nF

10 nF

MEASUREMENT CIRCUIT 2

10 nF

220 nF

10 nF

100 k

1

2

3

4

5

6

7

8

9

10

AGC Amp

OSC OUT
Buffer Amp

OSC

MIXER

OSC Buffer
Amp

VIDEO
Amp

20

19

18

17

16

15

14

13

12

11

10 nF MIX OUT

10 nF

50 Ω

<AGC + MIX block>

Noise Source

10 nF

BPF

V

AGC

220 nF

VCC1

1 nF

50 Ω

SG1

(50 Ω)

10 nF

100 k

10 nF

10 nF

220 nF

10 nF

100 k

1

2

3

4

5

6

7

8

9

10

AGC Amp

OSC OUT
Buffer Amp

OSC

NF METER

MIXER

VIDEO
Amp

OSC Buffer
Amp

20

19

18

17

16

15

14

13

12

11

BPF

10 nF

10 nF

50 Ω

Data Sheet P11998EJ3V0DS00

15

MEASUREMENT CIRCUIT 3

<Video Amp. block>

µµµµ

PC2798GR

AGC Amp

1

2

3

OSC OUT

4

Buffer Amp

5

6

7

8

9

10

MEASUREMENT CIRCUIT 4

OSC

MIXER

OSC Buffer
Amp

VIDEO
Amp

20

19

18

17

16

15

14

13

12

11

open
/short

10 nF

10 nF

1 nF

10 nF

10 nF

51 Ω

51 Ω

220 nF

1 kΩ

SG or
Network
Analyzer
(50 Ω)

50 Ω

VCC 2

950 Ω

(50 Ω)

Spectrum Analyzer or
Network Analyzer or
Oscilloscope

<Video Amp. block>

AGC Amp

1

2

3

OSC OUT

4

Buffer Amp

5

6

7

8

9

10

In case of measurement of IIP3

*7:

OSC

MIXER

OSC Buffer
Amp

VIDEO
Amp

20

19

18

17

16

15

14

13

12

11

open
/short

10 nF

10 nF

1 nF

10 nF

10 nF

51 Ω

51 Ω

SG1

(50 Ω)

220 nF

50 Ω

50 Ω

*7

MIX PAD

VCC 2

SG2

(50 Ω)

Spectrum
Analyzer

(50 Ω)

16

Data Sheet P11998EJ3V0DS00

MEASUREMENT CIRCUIT 5

<Total block>

µµµµ

PC2798GR

*8

SG3

(50 Ω)

MIX PAD

V

VCC1

OSC OUT

(50 Ω)

AGC

SG2

SG1

(50 Ω)

220 nF

1 nF

10 nF

100 k

10 nF

10 nF

10 nF

220 nF

10 nF

100 k

1

2

3

4

5

6

7

8

9

10

AGC Amp

OSC OUT
Buffer Amp

OSC

MIXER

OSC Buffer
Amp

VIDEO
Amp

20

19

18

17

16

15

14

13

12

11

open
/short

10 nF

1 nF

10 nF

10 nF

220 nF

1 kΩ

1 k1 k

5 pF

10 nF

950 Ω

VCC 2

Spectrum
Analyzer
(50 Ω)

: In case of measurement of IIP3

*8

Data Sheet P11998EJ3V0DS00

17

APPLICATION CIRCUIT EXAMPLE

µµµµ

PC2798GR

10 nF

IN

10 nF

100 k

100 k

220 nF

10 nF

1000 pF

10 pF

20 pF

10 pF

1000 pF

OSC OUT

Vtu

V

VCC1

10 k

CV

1.0 H

AGC

220 nF

1 nF

µ

10 k

CV: N ratio = 10 to 11 (ex. HVU 200 A)

1

2

3

4

5

6

7

8

9

10

AGC Amp

OSC OUT
Buffer Amp

OSC

MIXER

OSC Buffer
Amp

VIDEO
Amp

20

19

18

17

16

15

14

13

12

11

open
/short

10 nF

1 nF

10 nF

10 nF

220 nF

1 k1 k

5 pF

10 nF

VCC 2

OUT 1

OUT 2

The application circuits and their parameters are for reference only and are not intended for use in actual design-ins.

18

Data Sheet P11998EJ3V0DS00

ILLUSTRATION OF THE APPLICATION CIRCUIT ASSEMBLED ON EVALUATION BOARD

VCC2

µµµµ

PC2798GR

MIX
OUT 1

VIDEO
IN 1

MIX
OUT 2

VIDEO
IN 2

AGC IN

10 n

10 n

5 p

1 k

10 n

1 k

100 k

220 n

10 n

100 k

R

10 p

1 n 220 n

1 n

220 n

10 k

1000 p

10 p

20 p

Cv

1000 p

PC2798GR

µ

VIDEO
OUT 1

10 n

10 n

VIDEO

µ

1.2

Cv

10 k

10 n

OUT 2

OSC OUT

V

tu

Notes

*1)
*2)
*3)
*4)

V

AGCVCC

1

R is resistance to control video amplifier gain. (short to open)

V

is variable capacitor. (N ratio = 10 to 11, Example: HVU200A)

C
shows through holes
pattern should be removed on this application

Data Sheet P11998EJ3V0DS00

19

PACKAGE DIMENSIONS

20 PIN PLASTIC SSOP (225 mil) (UNIT: mm)

µµµµ

PC2798GR

20

110

6.7 ± 0.3

1.8 MAX.

1.5 ± 0.1

11

detail of lead end

3˚

6.4 ± 0.2

4.4 ± 0.1

+7˚
–3˚

1.0 ± 0.2

NOTE

0.5 ± 0.2

0.15

+0.10
–0.05

0.1 ± 0.1

0.65

0.22

+0.10
–0.05

0.10

0.15

M

0.575 MAX.

Each lead centerline is located within 0.10 mm of its true position (T.P.) at maximum material condition.

20

Data Sheet P11998EJ3V0DS00

µµµµ

PC2798GR

RECOMMENDED SOLDERING CONDITIONS

The following conditions (see table below) must be met when soldering this product.
Please consult with our sales officers in case other soldering process is used or in case soldering is done under

different conditions.

For details of recommended soldering conditions for surface mounting, refer to information document

SEMICONDUCTOR DEVICE MOUNTING TECHNOLOGY MANUAL (C10535E).

PC2798GR

µµµµ

Soldering process Soldering conditions Symbol

Infrared ray reflow Peak package’s surface temperat ure: 235 °C or below,

Reflow time: 30 seconds or bel ow (210 °C or higher),
Number of reflow process: 3, Exposure limit

VPS Peak package’s surface temperature: 215 °C or below,

Reflow time: 40 seconds or bel ow (200 °C or higher),
Number of reflow process: 3, Exposure limit

Partial heating method Terminal temperat ure: 300 °C or below,

Note

Flow time: 3 seconds or below,
Exposure limit

Exposure limit before soldering after dry-pack package is opened.

Note

: None

Note

Note

: None

: None

Storage conditions: 25 °C and relative humidity at 65% or less.

Caution Do not apply more than single process at once, except for “Partial heating method”.

IR35-00-3

VP15-00-3

Data Sheet P11998EJ3V0DS00

21

[MEMO]

µµµµ

PC2798GR

22

Data Sheet P11998EJ3V0DS00

[MEMO]

µµµµ

PC2798GR

Data Sheet P11998EJ3V0DS00

23

µµµµ

PC2798GR

NESAT (NEC Silicon Advanced Technology) is trademark of NEC Corporation.

• The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.

• No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in
this document.

• NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property
rights of third parties by or arising from use of a device described herein or any other liability arising from use
of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other
intellectual property rights of NEC Corporation or others.

• Descriptions of circuits, software, and other related information in this document are provided for illustrative
purposes in semiconductor product operation and application examples. The incorporation of these circuits,
software, and information in the design of the customer's equipment shall be done under the full responsibility
of the customer. NEC Corporation assumes no responsibility for any losses incurred by the customer or third
parties arising from the use of these circuits, software, and information.

• While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices,
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or
property arising from a defect in an NEC semiconductor device, customers must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features.

• NEC devices are classified into the following three quality grades:
"Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based on a
customer designated "quality assurance program" for a specific application. The recommended applications of
a device depend on its quality grade, as indicated below. Customers must check the quality grade of each device
before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots
Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)
Specific: Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.
The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact an NEC sales representative in advance.

M7 98. 8