®
RECF14001
AMERICAN MICROSYSTEMS, INC
June, 1998 Preliminary
AMI 0.6 micron CMOS
Full Wave Rectifier
Features
•
high speed response
•
useful for receive signal strength
indicator
•
can be paralleled for higher output
current
Description
A high speed, low-power full wave rectifier
based on the Gilbert cell multiplier
architecture. Works well with an IF strip to
produce a receive signal strength indicator
output. Requires a voltage reference.
PIN DESCRIPTION
NAME
TYPE
Analog Input
Analog Input
Analog Output
Analog Supply
Analog Supply
Differential IF input (true)
Differential IF input (false)
Amplified IF output (true)
+3V supply (2.7 - 3.6V)
Analog ground
DESCRIPTION
VDD
IN+
VREF
IN-
rect
VSS
OUT
IN+
IN-
OUT
AVDD
AVSS
AC ELECTRICAL CHARACTERISTICS
Unless otherwise stated T
A
= 25°C, VCC = 3V, RF frequency = 70 Mhz
SYMBOL
V
CC
I
DC
PRAMETER
Power supply voltage Range
DC current consumption
Input signal frequency
Noise figure
Input resistance
Output resistance
Output voltage range
Output current level
Output response time
CONDITIONS
MIN
TYP
MAX
UNITS
2.7
70Mhz input
Rs=50Ω
Rs=2kΩ
Single Ended
Single ended
Single ended,
Driving 2k load, single ended
3.0
2
10
300
f
IN
NF
R
IN
R
OUT
V
OUT
I
OUT
T
R
3
3.6
3
140
12
300
400
V
mA
MHz
dB
Ω
Ω
V
mA
nS
1
AMI [ AMI SEMICONDUCTOR ]
