AD8364ACPZ-R2 Analog Devices, AD8364ACPZ-R2 Datasheet - Page 8

• Manufacturer Part Number: AD8364ACPZ-R2
• Description: LF to 2.7GHz, Dual 60dB TruPwr Detector
• Manufacturer: Analog Devices

AD8364
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 3. Pin Function Descriptions
Pin No.
1
2, 23
3, 22, 29
4, 5
6
7
8, 17
9
10
11
12
13
14
15
16
18, 20
21, 25, 32
19
24
26, 27
28
30, 31
Under
Package
Mnemonic
CHPB
DECB, DECA
COMB, COMA, COMR
ADJB, ADJA
VREF
VLVL
CLPB, CLPA
VSTB
OUTB
FBKB
OUTN
OUTP
FBKA
OUTA
VSTA
ACOM
VPSR, VPSA, VPSB
TEMP
CHPA
INHA, INLA
PWDN
INLB, INHB
Exposed Paddle
Description
Connect to common via a capacitor to determine 3 dB point of Channel B input signal high-
pass filter.
Decoupling Terminals for INHA/INLA and INHB/INLB. Connect to common via a large
capacitance to complete input circuit.
Input System Common Connection. Connect via low impedance to system common.
Temperature Compensation for Channel B and Channel A. An external voltage is connected
to these pins to improve temperature drift. This voltage can be derived from VREF, that is,
connect a resistor from VREF to ADJ[A, B] and another resistor from ADJ[A, B] to ground. The
value of these resistors change as the frequency changes.
General-Purpose Reference Voltage Output of 2.5 V.
Reference Level Input for OUTP and OUTN. (Usually connected to VREF through a voltage
divider or left open).
Channel B and Channel A Connection for Loop Filter Integration (Averaging) Capacitor.
Connect a ground-referenced capacitor to this pin. A resistor can be connected in series with
this capacitor to improve loop stability and response time.
The voltage applied to this pin sets the decibel value of the required RF input voltage to
Channel B that results in zero current flow in the loop integrating capacitor pin, CLPB.
Channel B Output of Error Amplifier. In measurement mode, normally connected directly to
VSTB.
Feedback Through 1 kΩ to the Negative Terminal of the Integrated Op Amp Driving OUTN.
Channel Differencing Op Amp Output. In measurement mode, normally connected directly to
FBKB and follows the equation OUTN = OUTA − OUTB + VLVL.
Channel Differencing Op Amp Output. In measurement mode, normally connected directly to
FBKA and follows the equation OUTP = OUTA − OUTB + VLVL.
Feedback Through 1kΩ to the Negative Terminal of the Integrated Op Amp Driving OUTP.
Channel A Output of Error Amplifier. In measurement mode, normally connected directly to
VSTA.
The voltage applied to this pin sets the decibel value of the required RF input voltage to
Channel A that results in zero current flow in the loop integrating capacitor pin, CLPA.
Analog Common for Channels A and B. Connect via low impedance to common.
Supply for the Input System of Channels A and B. Supply for the internal references. Connect
to +5 V power supply.
Temperature Sensor Output.
Connect to common via a capacitor to determine 3 dB point of Channel A input signal high-
pass filter.
Channel A High and Low RF Signal Input Terminal.
Disable/Enable Control Input. Apply logic high voltage to shut down the AD8364.
Channel B Low and High RF Signal Input Terminal.
The exposed paddle on the under side of the package should be soldered to a ground plane
with low thermal and electrical characteristics.
PWDN
COMR
VPSA
VPSB
INHA
INHB
INLA
INLB
25
26
27
28
29
30
31
32
Figure 2. Pin Configuration
Rev. 0 | Page 8 of 48
AD8364
TOP VIEW
PIN 1
INDICATOR
16
15
14
13
12
11
10
9
VSTA
OUTA
FBKA
OUTP
OUTN
FBKB
OUTB
VSTB
Equiv. Circuit
Figure 52
Figure 68
Figure 54
Figure 58
Figure 56
Figure 57
Figure 58
Figure 58
Figure 57
Figure 56
Figure 53
Figure 52
Figure 55
Figure 52