HMC707LP5 / 707LP5E
v04.0409
0.5 dB LSB 6-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 700 - 1200 MHz
Features
-2.5 to +29 db gain Control in 0.5 db steps power-up state selection High Output ip3: +38 dbm low noise figure: 0.8 db ttl/CmOs Compatible serial, parallel, or latched parallel Control ±0.25 db typical step error single +3V and +5V supply 32 lead 5x5mm smt package: 25mm2
Typical Applications
the HmC707lp5(e) is ideal for: • Cellular infrastructure • Wibro, WimaX and lte/4g • microwave radio & Vsat • test equipment and sensors • if & rf applications
12
Variable gain amplifiers - digital - smt
Functional Diagram
General Description
the HmC707lp5(e) is a digitally controlled variable gain amplifier which operates from 700 mHz to 1200 mHz, and can be programmed to provide between -2.5 db attenuation and 29 db of gain, in 0.5 db steps. the HmC707lp5(e) delivers noise figure of 0.8 db in its maximum gain state, with output ip3 of up to +38 dbm. the dual mode gain control interface accepts either three wire serial input or 6-bit parallel word. the HmC707lp5(e) also features a user selectable power up state and a serial output for cascading other Hittite serially controlled components. for 1900 mHz applications please refer to the HmC708lp5(e) data sheet.
Electrical Specifications, TA = +25° C, Rbias = 820 Ohms for Vdd = +5V, Rbias = 4.7 kOhms for Vdd = +3V, Vdd = Vdd1 = Vdd2
parameter frequency range gain (maximum gain state) gain Control range input return loss Output return loss attenuation accuracy: (referenced to maximum gain state) Output power for 1 db Compression Output third Order intercept point noise figure switching Characteristics trise, tfall (50% Ctl to 90% rf) Current amp 1 Current amp 2 25 130 24 min. typ. Vdd = +3V 0.7 - 1.2 27.5 31.5 11 12.5 ±(0.3 + 4.5%) of attenuation setting 12 15 33
[1]
max.
min.
typ. Vdd = +5V 0.7 - 1.2
max.
Units gHz db db db db db dbm
25
29 31.5 14 15.5
±(0.3 + 4.5%) of attenuation setting 18 21 38.5 0.8 205 / 180
[2]
dbm db ns 115 190 ma ma
0.8 35 155 45 190 68 130
88 155
[1] two-tone output power @ -10 dbm [2] two-tone output power @ -5 dbm
12 - 1
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC707LP5 / 707LP5E
v04.0409
0.5 dB LSB 6-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 700 - 1200 MHz
Maximum Gain vs. Frequency [1]
36
Vdd=5V
Normalized Attenuation
(Only Major States are Shown)
0 NORMALIZED ATTENUATION (dB) -5 -10 -15 -20 -25 -30 -35 0.5
Vdd=3V Vdd=5V
32
GAIN (dB)
28
Vdd=3V
24
+25C +85C -40C
20
16 0.5
0.7
0.9 1.1 FREQUENCY (GHz)
1.3
1.5
0.6
0.7
0.8
0.9 1 1.1 1.2 FREQUENCY (GHz)
1.3
1.4
1.5
12
Variable gain amplifiers - digital - smt
12 - 2
Input Return Loss
(Only Major States are Shown)
0
Output Return Loss
(Only Major States are Shown)
0 -5
RETURN LOSS (dB)
RETURN LOSS (dB)
-5
Vdd=3V Vdd=5V
-10 -15 -20 -25
Vdd=3V Vdd=5V
-10
-15
-20 0.5
0.7
0.9 1.1 FREQUENCY (GHz)
1.3
1.5
-30 0.5
0.7
0.9 1.1 FREQUENCY (GHz)
1.3
1.5
Output IP3 vs. Tone Power [1]
44
Pout=-15 dBm Pout=-10 dBm Pout= -5 dBm Pout= 0 dBm
Output IP3 vs. Attenuation @ 900 MHz
40
40 IP3 (dBm)
Vdd=5V
30 IP3 (dBm)
Pout=-5dBm
36
Vdd=3V
20
Vdd=3V Vdd=5V
32
10
Pout=-10dBm
28 0.7
0 0.8 0.9 1 FREQUENCY (GHz) 1.1 1.2 0 4 8 12 16 20 24 ATTENUATION STATE (dB) 28 32
[1] maximum gain state with digital attenuation set to minimum attenuation
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC707LP5 / 707LP5E
v04.0409
0.5 dB LSB 6-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 700 - 1200 MHz
Bit Error vs. Frequency
(Only Major States are Shown)
2 1.5 1 BIT ERROR (dB) 0.5 0 -0.5 -1 -1.5 -2 0.5 0.6 0.7 0.8
Vdd=3V Vdd=5V
Bit Error vs. Attenuation State
1.2 1 BIT ERROR (dB) 0.8 0.6 0.4 0.2 0 -0.2
0.9GHz, 1GHz, 1.1GHz, 1.2GHz Vdd=3V Vdd=5V 700MHz, 800MHz
12
Variable gain amplifiers - digital - smt
10 5 RELATIVE PHASE (deg) 0 -5 -10 -15 -20 0.5
0.9 1 1.1 1.2 FREQUENCY (GHz)
1.3
1.4
1.5
0
4
8
12 16 20 24 ATTENUATION STATE (dB)
28
32
Relative Phase vs. Frequency
(Only Major States are Shown)
Step Error vs. Frequency
(Only Major States are Shown)
1 0.8 0.6 STEP ERROR (dB) 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8
Vdd=3V Vdd=5V
Vdd=3V Vdd=5V
0.7
0.9 1.1 FREQUENCY (GHz)
1.3
1.5
-1 0.5
0.6
0.7
0.8
0.9 1 1.1 1.2 FREQUENCY (GHz)
1.3
1.4
1.5
Noise Figure vs. Frequency
1.4 1.2 NOISE FIGURE (dB) 1 0.8 0.6 0.4 0.2 0 0.7
Noise Figure vs. Attenuation @ 900 MHz
20
NOISE FIGURE (dB)
Vdd=3V Vdd=5V
16
12
Vdd=3V Vdd=5V
8
4
0.8
0.9 1 FREQUENCY (GHz)
1.1
1.2
0
0
4
8
12 16 20 24 ATTENUATION (dBm)
28
32
12 - 3
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC707LP5 / 707LP5E
v04.0409
0.5 dB LSB 6-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 700 - 1200 MHz
Output IP3 & Supply Current vs. Supply Voltage @ 900 MHz
44
IP3 @0.9GHz
Output IP3 & Supply Current vs. Rbias @ 900 MHz
300 45 500
40 IP3 (dBm)
250 IP3 (dBm)
35
400 DC CURRENT (mA)
Idd (mA)
36
200
25
Vdd=3V Vdd=5V
300
32
Idd
150
15
200
28 2.7
3.1
3.5
3.9
4.3
4.7
5.1
100 5.5
5 1 10 100 Rbias (Ohms) 1000
100 10000
VOLTAGE SUPPLY (V)
Option 1 [1] : Amp1 + 6-Bit DAT only Gain & Return Loss [1] [2]
30 20 RESPONSE (dB) 10 0
S11 Vdd=3V Vdd=5V S21
12
Variable gain amplifiers - digital - smt
12 - 4
Noise Figure vs. Frequency [1] [2]
1.5
1.2 NOISE FIGURE (dB)
Vdd=3V Vdd=5V
0.9
0.6
-10 -20
S22
0.3
-30 0.5
0.6
0.7
0.8
0.9 1 1.1 1.2 FREQUENCY (GHz)
1.3
1.4
1.5
0 0.5
0.7
0.9 1.1 FREQUENCY (GHz)
1.3
1.5
Output IP3 vs. Attenuation @ 900 MHz [1]
40
30
Pout=-15dBm
IP3 (dBm)
20
10
Vdd=3V Vdd=5V
0
Pout=-20dBm
-10 0 4 8 12 16 20 24 ATTENUATION STATE (dB) 28 32
[1] see application Circuit
[2] maximum gain state with digital attenuator set to minimum attenuation
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC707LP5 / 707LP5E
v04.0409
0.5 dB LSB 6-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 700 - 1200 MHz
Option 2 [1] : 6 -Bit DAT + Amp2 only Gain & Return Loss [1] [2]
30 20 RESPONSE (dB) 10 0 -10 -20
S11 3V 5V
Output IP3 vs. Attenuation @ 900 MHz [1]
44
Pout=0dBm S21
40 36 IP3 (dBm) 32 28 24 20
Pout=-5dBm Vdd=3V Vdd=5V
Setup limit
S22
12
Variable gain amplifiers - digital - smt
-30 0.5
0.6
0.7
0.8
0.9 1 1.1 1.2 FREQUENCY (GHz)
1.3
1.4
1.5
0
4
8
12 16 20 24 ATTENUATION STATE (dB)
28
32
Serial Control Interface
the HmC707lp5(e) contains a 3-wire spi compatible digital interface (serin, ClK, le). it is activated when p/s is kept high. the 6-bit serial word must be loaded msb first. the positive-edge sensitive ClK and le requires clean transitions. standard logic families work well. if mechanical switches were used, sufficient debouncing should be provided. When le is high, 6-bit data in the serial input register is transferred to the attenuator. When le is high ClK is masked to prevent data transition during output loading. When p/s is low, 3-wire spi interface inputs (serin, ClK, le) are disabled and serial input register is loaded asynchronously with parallel digital inputs (d0-d5). When le is high, 6-bit parallel data is transferred to the attenuator. for all modes of operations, attenuation state will stay constant while le is kept low.
[1] see application Circuit
[2] maximum gain state with digital attenuator set to minimum attenuation
12 - 5
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC707LP5 / 707LP5E
v04.0409
0.5 dB LSB 6-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 700 - 1200 MHz
Timing Diagram (Latched Parallel Mode)
parameter min. serial period, tsCK Control set-up time, tCs Control hold-time, tCH le setup-time, tln min. le pulse width, tleW min le pulse spacing, tles serial clock hold-time from le, tCKn Hold time, tpH latch enable minimum Width, tlen setup time, tps typ. 100 ns 20 ns 20 ns 10 ns 10 ns 630 ns 10 ns 0 ns 10 ns 2 ns
Parallel Mode (Direct Parallel Mode & Latched Parallel Mode)
Note: the parallel mode is enabled when p/s is set to low. Direct Parallel Mode - the attenuation state is changed by the Control Voltage inputs directly. the le (latch enable) must be at a logic high to control the attenuator in this manner. Latched Parallel Mode - the attenuation state is selected using the Control Voltage inputs and set while the le is in the low state. the attenuator will not change state while le is low. Once all Control Voltage inputs are at the desired states the le is pulsed. see timing diagram above for reference.
12
Variable gain amplifiers - digital - smt
12 - 6
Power-Up States
if le is set to logic lOW at power-up, the logic state of pUp1 and pUp2 determines the power-up state of the part per pUp truth table. if the le is set to logic HigH at power-up, the logic state of d0-d5 determines the power-up state of the part per truth table. the dVga latches in the desired power-up state approximately 200 ms after power-up.
PUP Truth Table
le 0 0 0 0 1 pUp1 0 1 0 1 X pUp2 0 0 1 1 X gain relative to maximum gain -31.5 -24 -16 insertion loss 0 to -31.5 db
Power-On Sequence
the ideal power-up sequence is: gnd, Vdd, digital inputs, rf inputs. the relative order of the digital inputs are not important as long as they are powered after Vdd / gnd
note: power-Up with le= 1 provides normal parallel operation with d0 - d5, and pUp1 and pUp2 are not active.
Truth Table
Control Voltage input d5 High High d4 High High High High High low High low d3 High High High High low High High low d2 High High High low High High High low d1 High High low High High High High low d0 High low High High High High High low reference insertion loss 0 db -0.5 db -1 db -2 db -4 db -8 db -16 db -31.5 db
Control Voltage Table
state low High Vdd = +3V 0 to 0.5V @