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AD6122 Datasheet(PDF) 2 Page - Analog Devices

Part # AD6122
Description  CDMA 3 V Transmitter IF Subsystem with Integrated Voltage Regulator
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD6122 Datasheet(HTML) 2 Page - Analog Devices

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REV. B
–2–
AD6122–SPECIFICATIONS (T
A = +25 C, VCC = +3.0 V, LO = 2
IF, REFIN = 1.23 V, LDO Enabled, unless otherwise
noted) NOTE: All powers shown in dBm are referred to 1 k
.
Specification
Conditions
Min
Typ
Max
Unit
MODULATOR
LO = 260.76 MHz (2
× IF), 100 mV p-p
500 mV p-p Differential I and Q Inputs;
Output Level
Output Level Referred to a 1 k
Ω Differential Load
–21
dBm
Output Third Order Harmonic
–50
dBc
I/Q Inputs
Differential Input Voltage
Differential
500
mV p-p
Bandwidth
–3 dB
20
MHz
Resistance
30
k
Quadrature Accuracy
± 1
°
Amplitude Balance
±0.1
dB
Output Referred Noise
0.9 MHz to 5.0 MHz Offsets
–169
dBm/Hz
Modulator Common-Mode Reference
1.408
V
LO Input Resistance
Differential Input at 260.38 MHz
1.2
k
LO Input Capacitance
Differential Input at 260.38 MHz
2.4
pF
LO Carrier Leakage
Bias I/Q Using MODCMREF
–40
dBc
IF AMPLIFIER
FIF = 130.38 MHz
Noise Figure
VGAIN = 2.5 V, 1 k
Ω Differential Load
10
dB
Input 1 dB Compression Point
VGAIN = 2.5 V
–32
dBm
Input Third-Order Intercept
VGAIN = 2.5 V
–24
dBm
Gain Flatness
IF
±630 kHz
±0.25
dB
Input Capacitance
Shunt Equivalent Model at 130.38 MHz
2.3
pF
Differential IF Input Resistance
Shunt Equivalent Model at 130.38 MHz
680
Differential IF Output Resistance
Per Pin at 130.38 MHz
4.2
k
Differential IF Output Capacitance
Per Pin at 130.38 MHz
2.0
pF
GAIN CONTROL INTERFACE
Gain Scaling
Using Internal Reference
75
dB/V
Gain Scaling Linearity
For a Typical Dynamic Range of 92 dB
± 3
dB/V
Minimum Gain
VGAIN = 0.5 V
–63
dB
Maximum Gain
VGAIN = 2.5 V
+34
dB
Gain Control Response Time
90 dB Gain Change, Min Gain to Max Gain
0.7
µs
Input Resistance at REFIN
10
M
Input Resistance at VGAIN
109
k
POWER-DOWN INTERFACE
Logic Threshold High
Power-Up on Logical High
1.34
V
Logic Threshold Low
1.30
V
Input Current for Logical High
0.1
µA
Turn-On Response Time
Measure to Settling of AGC from Standby Mode
23
µs
Turn-Off Response Time
To 200
µA Supply Current
187
ns
LOW DROPOUT REGULATOR
External PNP Pass Transistor, VCESAT = –0.4 V
Max, hFE = 100/300 Min/Max
Input Range
2.9–4.2
V
Nominal Output
2.70
V
Dropout Voltage
200
mV
Reference Output
1.23
V
POWER SUPPLY
Supply Range Bypassing Internal LDO
2.7–5.0
V
Supply Current
VGAIN = 1.5 V (Unity Gain)
10.4
mA
Standby Current
7.8
µA
OPERATING TEMPERATURE
TMIN to TMAX
–40
+85
°C
Specifications subject to change without notice.


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