X9470 Datasheet, PDF (5/25 Pages) Xicor Inc. – RF Power Amplifier (PA) Bias Controller

Preliminary Information
X9470
VREF DCP CIRCUIT BLOCK
Recommended Operating Conditions: (Vcc, V+ = 4.75 to 5.25V; Vsense+, Vsense- = 26V; T_A = -40°C to +85°C,
unless otherwise noted.)
Symbol
Parameter
Resolution⁽¹⁰⁾
Absolute Linearity⁽⁶⁾
Relative Linearity⁽⁷⁾
R_TOTAL Temperature Coefficient⁽¹⁰⁾
Ratiometric Temperature Coefficient⁽¹⁰⁾
C_IN⁽¹⁰⁾ Potentiometer Capacitances on RH_REF
and RL_REF
Min.
-0.2
-0.2
-20
Limits
Typ. Max.
1.6
+0.2
+0.2
±300
+20
10
Units
%
MI⁽⁸⁾
MI⁽⁸⁾
ppm/°C
ppm/°C
pF
Test Conditions/Notes
BIAS ADJUSTMENT DCP CIRCUIT BLOCK
Recommended Operating Conditions: (Vcc, V+ = 4.75 to 5.25V; Vsense+, Vsense- = 26V; T_A = -40°C to +85°C, unless
otherwise noted.)
Symbol
Parameter
R_TOTAL End to End Resistance Variation
Number Taps or Positions
V_RH
V_RL
V_RW
Voltage at the RH_BIAS Terminal Voltage
Voltage at the RL_BIAS Terminal Voltage
Voltage at the RW_BIAS Terminal Voltage
Power Rating⁽¹⁰⁾
Resolution⁽¹⁰⁾
Absolute Linearity⁽⁶⁾
Relative Linearity⁽⁷⁾
R_TOTAL Temperature Coefficient⁽¹⁰⁾
Ratiometric Temperature Coefficient⁽¹⁰⁾
C_IN⁽¹⁰⁾ Potentiometer Capacitances on RH_BIAS
and RL_BIAS
Min.
8
AGND
AGND
AGND
-1.0
-1.0
-50
Limits
Typ. Max.
10
12
256
V₊
V₊
V₊
2.5
0.4
+1.0
+1.0
±300
50
10
Units Test Conditions/Notes
KΩ with ±20% variation
V AGND = 0V
V AGND = 0V
V AGND = 0V
mW R_TOTAL =10 KΩ
%
MI⁽⁸⁾
MI⁽⁸⁾
ppm/°C
ppm/°C
pF
VBIAS OUTPUT VOLTAGE FOLLOWER
Recommended Operating Conditions: (Vcc, V+ = 4.75 to 5.25V; Vsense+, Vsense- = 26V; T_A = -40°C to +85°C,
unless otherwise noted.)
Symbol
Parameter
V_OS
Input Offset Voltage
V_OSDRIFT⁽¹⁰⁾ Offset Voltage Temperature
Coefficient
SR
Output Slew Rate on V_BIAS
V_BIAS Voltage Output Swing
Min.
Limits
Typ. Max.
10
10
Units
mV
µV/°C
Test Conditions/Notes
T_A = -40 to +85°C
0.5
V/µS R_L = 10kΩ, 1nF, ∆V_BIAS =
20mV
1.5
V_CC – 0.5
V
I_OUT = ±10mA
REV 11.16 3/20/03
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