ATR4251_09 Datasheet, PDF (8/21 Pages) ATMEL Corporation – Low-noise, High-dynamic-range Antenna Amplifier IC

7. Electrical Characteristics
See Test Circuit, Figure 8-1 on page 11; V_S = 10V, T_amb = 25°C, unless otherwise specified. Pin numbers in () are referred to the QFN
package.
No. Parameters
Test Conditions
Pin
Symbol Min.
Typ.
Max.
Unit Type*
1.1 Supply currents
1.2
Reference voltage 1
output
I_vref1 = 1 mA
17 (17)
I_S
11
14
17
mA
A
3 (24)
V_Ref1
2.65
2.8
2.95
V
A
1.3
Reference voltage 2
output
7 (5)
V_Ref2
0.38 V_S 0.4 V_S 0.42 V_S
V
B
1.4
Reference voltage 4
output
I_vref4 = 3 mA
15 (15)
V_Ref4
6.0
6.25
6.5
V
A
2 AM Impedance Matching 150 kHz to 30 MHz (The Frequency Response from Pin 8 to Pin 14)
2.1 Input capacitance
f = 1 MHz
2.2 Input leakage current T_amb = 85°C
2.3 Output resistance
2.4 Voltage gain
f = 1 MHz
8 (6)
C_AMIN
2.2
2.45
2.7
pF
D
8 (6)
40
nA
C
14 (14)
R_OUT
4
5
8
8/14
(6/14)
A
0.94
0.97
1
Ω
D
A
Pin 14 (14),
R₇₈ = 4.7 MΩ,
2.5
Output noise voltage
(rms value)
B = 9 kHz, C_ANT = 30 pF
150 kHz
200 kHz
14
V_N1
V_N2
500 kHz
V_N3
1 MHz
V_N4
2.6 2^nd harmonic
V_s = 10V, 50Ω load,
f_AMIN = 1 MHz, input
voltage = 120 dBµV
AMOUT1
–8
–6
dBµV
C
–9
–7
dBµV
–11
–9
dBµV
–12
–10
dBµV
–60
–58
dBc
C
2.7 3^rd harmonic
V_s = 10V, 50Ω load,
f_AMIN = 1 MHz, input
voltage = 120 dBµV
AMOUT1
–53
–50
dBc
C
3 AM AGC
3.1 Input resistance
3.2 Input capacitance
3.3
AGC input voltage
threshold
f = 1 MHz
f = 1 MHz
10 (9)
R_AGCAMIN
40
50
kΩ
D
10 (9)
C_AGCAMIN
2.6
3.2
3.8
pF
D
10 (9)
V_AMth
75
77
79
dBµV
B
3.4
3 dB corner frequency
AGC threshold increased
by 3 dB
10
MHz
D
3.5
Minimal AGCAM output ViHF = 90 dBµV at pin
voltage
10 (9)
10/11
(9/10)
V_AGC
V_S – 2.4 V_S – 2.1 V_S – 1.7
V
A
3.6
Maximal AGCAM output
voltage
ViHF = 0V at pin 10 (9)
10/11
(9/10)
V_AGC
V_S – 0.2 V_S – 0.1
V
A
3.7
Maximal AGCAM output ViHF = 0V at pin 10 (9)
voltage⁽¹⁾
T = +85°C
10/11
(9/10)
V_AGC
V_S – 0.4 V_S – 0.3
V
C
3.8
Maximum AGC sink
current
ViHF = 0V at pin 10 (9)
U (pin 12 (11)) = 2V
12 (11)
I_AMsink
–150 –120
–90
µA
A
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Notes: 1. Leakage current of PIN diode can be adjusted by an external resistor between pin 11 and VS
2. Demo board measurements (see Figure 8-1 on page 11 “Common Emitter Configuration”)
3. Demo board measurements (see Figure 9-1 on page 12 “Common Base Configuration”)
8 ATR4251
4913J–AUDR–10/09