Philips Semiconductors
Wideband differential digital controlled
variable gain amplifier
Product specification
TDA9901
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Analog inputs
Vi(max)(p-p)
maximum input voltage minimum gain
−
1.0
−
V
(peak-to-peak value)
maximum gain
−
60.4
−
mV
Vi(cm)
common mode input
voltage
2.0
2.7
VDDA − 1.9 V
Ii
input current
Vi(cm) = 2.7 V
−
55
−
µA
Ri
input resistance
10
−
−
kΩ
Ci
input capacitance
−
−
5
pF
Analog outputs; note 2
Vo(max)(p-p)
maximum differential
maximum gain
2.0
−
−
V
output voltage
minimum gain
2.0
−
−
V
(peak-to-peak value)
Vo(cm)
∆Vo(cm)/∆T
common mode output
voltage
common mode output
voltage variation with
temperature
referenced to VDDA;
Tamb = 25 °C
VDDA − 2.56 VDDA − 2.42 VDDA − 2.29 V
−
−1.8
−
mV/°C
SRo(se)
single-ended output slew
rate
−
275
−
V/µs
Ro
output resistance
Co
output capacitance
−
15
26
Ω
−
3
−
pF
Variable gain amplifier dynamic performance; CL = 5 pF; RL = 680 Ω (see Figs 6, 7, 8, 9 and 10)
HD2
HD3
∆HD3/∆T
2nd harmonic distortion Vo = Vo(max)
fi = 0.5 MHz
−
fi = 4.43 MHz
−
fi = 12.5 MHz
−
fi = 21.4 MHz
−
3rd harmonic distortion
Vo = Vo(max);
Tamb = 25 °C
fi = 0.5 MHz
−
fi = 4.43 MHz
−
fi = 12.5 MHz
−
fi = 21.4 MHz
−
3rd harmonic distortion fi = 21.4 MHz
−
variation with temperature
−80
−67
dBc
−77
−67
dBc
−76
−65
dBc
−74
−62
dBc
−64
−60
dBc
−64
−59
dBc
−62
−58
dBc
−61
−57
dBc
80
−
mdB/°C
Reference voltage output ADC: pin CMADC
Vref(CMADC)
ADC reference output
voltage
Ro(CMADC)
∆Vref(CMADC)/∆T
output resistance
ADC reference output
voltage variation with
temperature
referenced to VDDA;
Tamb = 25 °C
Tamb = 25 °C
VDDA − 1.64 VDDA − 1.45 VDDA − 1.26 V
−
17
26
Ω
−
−0.11
−
mV/°C
1999 Oct 08
7