Datasheet

MAX11014/MAX11015
Automatic RF MESFET Amplifier
Drain-Current Controllers
14 ______________________________________________________________________________________
Pin Description
PIN NAME FUNCTION
1 DIN/SDA
Serial Data Input. Data is latched into the serial interface on the rising edge of SCLK in SPI mode.
Connect a pullup resistor to SDA in I
2
C mode.
2
DOUT/A1
Serial Data Output in SPI Mode/Address Select 1 in I
2
C Mode. Data transitions on the falling edge of
SCLK. DOUT is high impedance when CS is high. Connect A1 to DV
DD
or DGND to set the device
address to I
2
C mode.
3 ADCIN1 Analog Input 1
4 ADCIN2 Analog Input 2
5 DXN1
Remote-Diode Current Sink. Connect the emitter of a base-emitter junction remote npn transistor to
DXN1.
6 DXP1
Remote-Diode Current Source. Connect DXP1 to the base/collector of a remote temperature-sensing
npn transistor. Do not leave DXP1 open; connect to DXN1 if no remote diode is used.
7 DXN2
Remote-Diode Current Sink. Connect the emitter of a base-emitter junction remote npn transistor to
DXN2.
8 DXP2
Remote-Diode Current Source. Connect DXP2 to the base/collector of a remote temperature-sensing
npn transistor. Do not leave DXP2 open; connect to DXN2 if no remote diode is used.
9 REFDAC
DAC Reference Input/Output. Connect a 0.1µF capacitor to AGND in external reference mode. See
the HCFG (Read/Write) section.
10 REFADC
ADC Reference Input/Output. Connect a 0.1µF capacitor to AGND in external reference mode. See
the HCFG (Read/Write) section.
11, 27 AV
DD
Positive Analog Supply Voltage. Set AV
DD
between +4.75V and +5.25V. Bypass with a 1µF and a
0.1µF capacitor in parallel to AGND.
12, 26 AGND Analog Ground
13
ACLAMP2
MESFET2 External Clamping Voltage Input
14 GATE2 MESFET2 Gate Connection. See the Gate-Drive Amplifiers section.
15
GATEV
SS
Gate-Drive Amplifier Negative Power-Supply Input. Set GATEV
SS
between -4.75V and -5.5V. Connect
externally to AV
SS
. Bypass with a 1µF and a 0.1µF capacitor in parallel to AGND.
16, 28, 29,
34–37
N.C. No Connection. Not internally connected.
17
ACLAMP1
MESFET1 External Clamping Voltage Input
18 GATE1 MESFET1 Gate Connection. See the Gate-Drive Amplifiers section.
19 FILT1 Channel 1 Filter 1 Input. See Figures 5 and 6.
20 FILT2 Channel 1 Filter 2 Input. See Figures 5 and 6.
21 FILT3 Channel 2 Filter 3 Input. See Figures 5 and 6.
22 FILT4 Channel 2 Filter 4 Input. See Figures 5 and 6.
23
PGAOUT1
Channel 1 Amplifier Voltage Output. See the PGAOUT Outputs section and Figures 5 and 6.
24
PGAOUT2
Channel 2 Amplifier Voltage Output. See the PGAOUT Outputs section and Figures 5 and 6.
25 AV
SS
Negative Analog Supply Voltage. Set AV
SS
between -4.75V and -5.5V. Connect externally to
GATEV
SS
. Bypass with a 1µF and a 0.1µF capacitor in parallel to AGND.