MOTOROLA MC12053A Technical data

MC12053AD

Order this document by MC12053A/D

1.1 GHz Super Low Power

Dual Modulus Prescaler

With Stand-By Mode

The MC12053A is a super low power 64/65, 128/129 dual modulus prescaler. Motorola's advanced Bipolar MOSAIC V technology is utilized to achieve low power dissipation of 4.3 mW at a minimum supply voltage of 2.7 V.

The Divide Ratio Control input, SW, permits selection of divide ratio as desired. A HIGH on SW selects 64/65; an OPEN on SW selects 128/129. The Modulus Control input, MC, selects the proper divide number after SW has been biased to select the desired divide ratio.

Stand±by mode is featured to reduce current drain to 50 μA typical at 2.7 V when the stand±by pin, SB, is switched LOW, disabling the prescaler. On±chip output termination provides 500 μA (typical) output current, which is sufficient to drive a CMOS synthesizer input high impedance load (8.0 pF typical).

•1.1 GHz Toggle Frequency

•Supply Voltage of 2.7 to 5.5 V

•Low Power 1.5 mA Typical at VCC = 2.7 V

•Operating Temperature Range of ±40 to 85°C

•On±Chip Output Termination

•The MC12053A Is Pin and Functionally Compatible With the MC12036

•Modulus Control Input Level Is Compatible With Standard CMOS and TTL

MOSAIC V is a trademark of Motorola

FUNCTIONAL TABLE

SW	MC	Divide Ratio
H	H	64
H	L	65
L	H	128
L	L	129

NOTES: 1. SW: H = VCC ± 0.5 to VCC, L = Open. A logic L can also be applied by grounding this pin, but this is not recommended due to increased power consumption.

2. MC & SB: H = 2.0 V to VCC, L = Gnd to 0.8 V.

MAXIMUM RATINGS

Characteristic	Symbol	Range	Unit
Power Supply Voltage, Pin 2	VCC	±0.5 to 7.0	Vdc
Operating Temperature Range	TA	±40 to 85	°C
Storage Temperature Range	Tstg	±65 to 150	°C
Modulus Control Input, Pin 6	MC	±0.5 to VCC	Vdc
Maximum Output Current, Pin 4	IO	4.0	mA

NOTE: ESD data available upon request.

MC12053A

MECL PLL COMPONENTS64/65, 128/129 LOW POWER

DUAL MODULUS PRESCALER WITH STAND±BY MODE

SEMICONDUCTOR

TECHNICAL DATA

8

1

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO±8)

8

1

SD SUFFIX

PLASTIC PACKAGE

CASE 940

(SSOP±8)

PIN CONNECTIONS

IN	1	8	IN
V	2	7	SB
CC
SW 3		6	MC
OUT	4	5	Gnd
		(Top View)

ORDERING INFORMATION

	Operating
Device	Temp Range	Package
MC12053AD	TA =	SO±8
MC12053ASD	± 40° to +85°C	SSOP±8

Motorola, Inc. 1997

Rev 4

MC12053A

ELECTRICAL CHARACTERISTICS (VCC = 2.7

to 5.5 V; TA = ±40 to 85°C, unless otherwise notex.)

Characteristic

Symbol

Min

Typ

Max

Unit

Toggle Frequency (Sine Wave Input)

ft

0.1

1.4

1.1

GHz

Supply Current Output (Pin 2)

VCC = 2.7 V

ICC

±

1.60

2.5

mA

VCC = 5.0 V

±

1.75

2.5

Stand±By Current

VCC = 2.7 V

ISB

±

50

250

μA

VCC = 5.0 V

±

100

250

Modulus Control & Stand±By Input HIGH (MC & SB)

VIH1

2.0

±

VCC + 0.5

V

Modulus Control & Stand±By Input LOW (MC & SB)

VIL1

Gnd

±

0.8

V

Divide Ratio Control Input HIGH (SW)

VIH2

VCC ± 0.5

VCC

VCC + 0.5

V

Divide Ratio Control Input LOW (SW)

VIH2

Open

Open

Open

Output Voltage Swing (Note 1)

Vout

0.8

1.1

±

Vpp

Modulus Setup Time MC to OUT at 1100 MHz

tset

±

11

16

ns

Input Voltage Sensitivity

250±1100 MHz

Vin

100

±

1000

mVpp

100±250 MHz

400

±

1000

NOTE:

Assumes 8.0 pF high impedance load.

Figure 1. Logic Diagram (MC12053A)

Figure 2. Modulus Setup Time

D

Q

D

Q

D

Q

Prop. Delay

A

B

C

In

C

QB

In

C

QB

C

QB

M

In

Out

MC

SB

MC Setup

MC

D

Q

D QB

D

Q

D

QB

D

QB

MC Release

D

E

F

G

H

C QB

C

Q

C QB

C Q

C

Q

Out

Modulus setup time MC to out is the MC

setup or MC release plus the prop delay.

S

SW

	Figure 3. AC Test Circuit
	C3
Sine Wave Generator	SW
VCC
C1
IN	SB
50 Ω	OUT
C2	CL
IN
MC	GND

VCC = 2.7 to 5.5 V

EXTERNAL COMPONENTS

C1 = C2 = 1000 pF

C3 = 0.1 μF

CL = 8.0 pF (Including Scope and jig capacitance)

MC Input

2	MOTOROLA RF/IF DEVICE DATA

MC12053A

Figure 4. Input Signal Amplitude versus Input Frequency

	+15.0									+1257.40
	+10.0									+707.11
	+5.0									+397.64
	0									+223.61
	±5.0			OPERATING						+125.74
				WINDOW
(dBm)	±10.0									+70.71
	±15.0									+39.76	mVrms
AMPLITUDE
	±20.0									+22.36
	±25.0									+12.57
	±30.0									+7.07
	±35.0									+3.98
	±40.0									+2.24
	±45.0									+1.26
	±50.0									+0.71
	0	200	400	600	800	1000	1200	1400	1600	1800

FREQUENCY (MHz)

Divide Ratio = 64; VCC = 2.7 V; TA = 25°C

Figure 5. Output Amplitude versus Input Frequency

									2000
									1600
									1200	mVpp
									800
									400
									0
0	200	400	600	800	1000	1200	1400	1600	1800

FREQUENCY (MHz)

MOTOROLA RF/IF DEVICE DATA	3