6611B
Filter/Amplifier – Single Channel – 2.048 MHz
DESCRIPTION
SALIENT FEATURES
The Series 6611B Filter/Amplifier provides a choice of three filter characteristics (HP1, LP1, and TD6) and two frequency
ranges (6611B-A: 20 Hz to 2.048 MHz; 6611B-B: 20 Hz to
1.024 MHz). The 6611B provides numerous options to meet
your specific requirements.
The 6611B is intended for use in the 6000 System in which it
can provide 16 anti-alias filter/amplifiers or 8 band-pass filter/amplifiers with differential input, pre-filter and post-filter
gain, calibration, and monitoring. All this is available in a single
7"-high rack-mounted mainframe.
OPTIONS
Option 1
Option 2
Option 5
Option 6
Option 7
Option A
Option B
Option C
Option D
Option FX
Option G
Option M
Option T
AC coupled, single-ended input
(0.1µF/50V + 100 kΩ)
AC coupled, differential input
(0.1µF/50V + 100 kΩ) each side
Prog AC/DC coupled single-ended input
(0.1µF/50V + 100 kΩ)
Prog AC/DC coupled differential input
(0.1µF/50V + 100 kΩ) each side
Fixed pre-filter gain of 10
Programmable pre-filter gain
(−10 dB to 20 dB in 10 dB steps)
Bypass
Calibration input
Differential input
Special cutoff frequency
Programmable post-filter gain
(0 dB to 22 dB in 2 dB steps)
Output monitor
Differential output
CUTOFF FREQUENCY SETTINGS
Model
Number
Frequency Range
(Hz)
6611B-A
Min
20
Max
2.048 M
6611B-B
20
1.024 M
Cutoff Frequencies (Hz)
Step Size (Hz)
20
200
2k
20 5.2k 52k 5.12k
51.2k 2.048 M
20 5.2k 52k 5.12k
51.2k 1.024 M
Cutoff Frequencies: A: 20 Hz to 2.048 MHz
B: 20 Hz to 1.024 MHz
Filter types: HP1, LP1 (80 dB/octave attn slope)
TD6 (linear phase)
Gain: Pre-filter gain, −10 to +20 dB
Post-filter gain, 0 to 22 dB
Fixed pre-filter gain, 10
Input: Single-ended
Differential
Programmable Hi-Z/Low-Z
Output: Single-ended
Differential
System: Calibration
Bypass
Monitor
FILTER CHARACTERISTICS
See the HP1, LP1, and TD6 sheets for additional information.
HP1:
6 pole, 6 zero elliptic (Cauer) high-pass filter
(80 dB/octave)
LP1:
6 pole, 6 zero elliptic (Cauer) low-pass filter
(80 dB/octave)
TD6:
6 pole, 4/6 zero time-delay low-pass filter
(linear phase); select TD6A or TD6B at front panel
TD6A:
6 pole Bessel low-pass with 4 stop-band zeros
for minimum overshoot and fast settling
TD6B:
2 additional zeros flatten the pass-band of TD6A;
Improved amplitude response but more overshoot
Cutoff Amplitude: −3.01 dB: HP1, LP1, TD6B
−9.61 dB: TD6A
Amplitude Accuracy: ±0.05 dB typical, low ranges
(LP1, TD6; ±0.20 dB max, low ranges
DC to 0.9 Fc) ±0.10 dB typical, high range
±0.50 dB max, high range
Amplitude Accuracy: ±0.1 dB typical, low ranges
(HP1; ±0.4 dB max, low ranges
1.2 Fc to 4 MHz) ±0.2 dB typical, high range
±1.0 dB max high range
Amplitude Match: +0.10 dB max, low ranges
(LP1, TD6; DC to 0.9 Fc) ±0.5 dB max, high range
(HP1; 1.2 Fc to 4 MHz)
Phase Match: ±1o max, ±0.5o typ, low ranges
(LP1, TD6; DC to 0.9 Fc) ±4o max, ±1o typ, high range
(HP1; 1.2 Fc to 4 MHz)
6611B INPUT CHARACTERISTICS
Standard: DC coupled, single-ended input
Z: 100 kΩ // 100 pF
(programmable to 50 Ω)
Level: Eo ≤ |10 Vpk|, f < 300 kHz
Eo < |10 Vpk|(300 kHz/f), f > 300 kHz
±50 Vpk w/o damage
Offset: ±100 µV ±25 µV/oC, typical
Bias Current: <150 pA, typical
Option 1: AC coupled, single-ended input
Z: (0.1µF & 100 kΩ) // 100pF
Level: ±10 Vpk linear; ±50 Vpk w/o damage
Option 5: Prog AC/DC coupled, single-ended input
See standard and Option 1 specifications
Option D: DC Coupled, differential input
Z: 100 kΩ // 100pF per input
50 kΩ // 200pF common mode
Level: Eo ≤|10 Vpk|, f < 300 kHz
Eo < |10 Vpk|(300 kHz/f), f > 300 kHz
±50 Vpk w/o damage
CMRR: 80 dB, DC to 500 Hz;
60 dB, 500 Hz to 100 kHz
Offset: ±100 µV ±15 µV/oC, typical
Bias Current: <150 pA, typical
Option 2: AC coupled, differential input
Z: (0.1µF & 100 kΩ) // 100pF each side
Level: Eo ≤ |10 Vpk|, f < 300 kHz
Eo < |10 Vpk|(300 kHz/f), f > 300 kHz
±50 Vpk w/o damage
CMRR: 80 dB, 40 Hz to 500 Hz;
60 dB, 2 Hz to 100 kHz
Option 6: AC/DC coupled, differential input
See Option 2 and Option D specifications
TRANSFER CHARACTERISTICS
Standard:
Distortion:
Crosstalk:
Hum:
Unity gain, 0 dB ±0.1dB
−80 dB re Fullscale, 2 kΩ load at 1 kHz
−80 dB re Fullscale (3 Vpk at 100 kHz)
−80 dB re Fullscale (3 Vpk)
Option A: Pre-filter gain
−10, 0, 10, and 20 dB, ±0.1 dB
Option B: Bypass: bypasses gain and filter when
bypass is on
3 dB BW: 2 MHz typical, 6611B-B
4 MHz typical, 6611B-A
Option G: Post-filter gain
0 dB to 22 dB in 2 dB steps, ±0.1 dB
Option 7: Fixed pre-filter gain 10 ±0.1 dB
(cannot have Option 7 and Option A)
OUTPUT CHARACTERISTICS
Standard:
Z:
Max Out:
Offset:
Drift:
Noise:
DC coupled, single-ended output
50Ω // 50 pF
Io ≤20 mA pk
Adjustable to zero
50 µV/oC + (input drift)(gain)
800 µV in 20 MHz BW (minimum gain)
Option T:
Z:
Max Out:
Offset:
Drift:
Noise:
DC coupled, differential output
50Ω // 100 pF each side
Io ±20 mA pk
±15 mV
100 µV/oC + (input drift)(gain)
500 µV in 20 MHz BW (minimum gain)
GENERAL CHARACTERISTICS
Size: 5.68 x 13.15 x 0.75 inches
(14.43 x 33.40 x 1.91 cm)
Weight: 1.87 lbs net, 3.3 lbs shipping
(0.85 kg net, 1.5 kg shipping)
Power: ±28V at 200 mA
+24V at 135 mA
+ 5V at 10 mA
Temperature: 0oC to 40oC (operating)
−20oC to 70oC (storage)
P8363 Rev -
24O Cherry Street, Ithaca, New York 1485O
6O7-277-355O Fax: 6O7-277-4466 www.pfinc.com