adl5386 Analog Devices, Inc., adl5386 Datasheet - Page 10

• Manufacturer Part Number: adl5386
• Description: 50 Mhz To 2200 Mhz Quadrature Modulator With Integrated Detector And Vva
• Manufacturer: Analog Devices, Inc.

ADL5386
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 4. Pin Function Descriptions
Pin No.
1
2
3
4
5, 11, 13, 15,
16, 18, 19, 27,
28, 31, 32, 40
6
7
8
9
10
12, 20
14, 17
21 to 23,
35 to 38
Mnemonic
INLO
INHI
VSET
CLPF
COMM
VREF
VDET/VCTL
TEMP
NC
MODOUT
ATTI, ATTO
ATTCM
VPOS
QBBN
QBBP
NOTES
1. NC = NO CONNECT.
2. CONNECT THE EXPOSED PAD TO GROUND VIA A LOW IMPEDANCE PATH.
IBBP
IBBN
LOIN
LOIP
Description
Detector Common. This pin should be ac-coupled to ground.
Detector Input. When operating in AGC mode, a portion of the signal at the output of the VVA (or at the
output of a subsequent stage) is coupled back to this input. The signal should be ac-coupled into INHI. To provide
a 50 Ω match at INHI, a 50 Ω resistor should be connected between INHI and ground (with the ac-coupling
capacitor placed between the resistor and the INHI pin).
Setpoint Input. Setpoint input for controller mode or feedback input for measurement mode.
AGC Loop Filter Capacitor. The ground-referenced capacitor that is connected to this pin sets the loop bandwidth
of the AGC circuit.
Device Common. Connect these pins to the same low impedance ground plane.
Attenuator Control Voltage Reference. In AGC mode, this pin should be left open. In open-loop mode, when
the VVA is being controlled externally, a 2 V reference voltage should be applied to this pin.
Detector Output/VVA Control Voltage Input. When the VVA is being controlled externally (open-loop mode),
the attenuation is controlled by the external voltage applied to this pin. The VVA control range is from 0 V
(maximum attenuation) to 2 V (minimum attenuation). In this mode, VREF (Pin 6) should be tied to approximately
2 V. When the VVA is being operated in AGC mode, this pin is left open with the voltage on the pin representing the
AGC drive voltage to the VVA. If the VVA is not being used, the AGC log amp can be used as a standalone detector
by connecting this pin to VSET. In this mode, the log amp output voltage is available at this pin.
Temperature Sensor Output. This pin provides a standalone temperature sensor output voltage. At room
temperature, the nominal output voltage is equal to 1.45 V. The slope of the output voltage is equal to 4.6 mV/°C.
No Connect. Do not connect this pin.
RF Output of IQ Modulator. Single-ended, 50 Ω internally biased RF output. MODOUT is generally
ac-coupled to the input of the VVA (either ATTI or ATTO).
VVA RF Input/Output. ATTI is normally ac-coupled to MODOUT. However, because the VVA is completely reversible,
MODOUT can also drive ATTO with ATTI operating as the VVA output.
VVA Input/Output Common. These pins should be ac-coupled to ground.
Power Supply. Positive supply voltage pins. All pins should be connected to the same supply (VS). To ensure
adequate external bypassing, connect a 0.1 μF capacitor between each pin and ground.
25
26
33
34
29
30
TEMPERATURE
38 37
SENSOR
TEMP
VPOS
QUADRATURE
8
SPLITTER
36
PHASE
35
INLO
1
INHI
2
23
VPOS
22
Figure 2. Pin Configuration
DETECTOR
Rev. 0 | Page 10 of 36
21
LOG
IQ MOD
ENBL
TADJ
BIAS
24
39
ADL5386
5
11
13
MODOUT
15
COMM
10
16 18
19 27
ATTI
12
15dB
28
I
31
I
V
32
NC
9
V
40
17
14
20
6
4
7
3
ATTCM
ATTCM
ATTO
VREF
VDET/VCTL
CLPF
VSET