Features
WPI’s DAM series amplifier’s are well known as a standard of the industry for extracellular potential amplification. These battery powered bio-amplifiers are designed with a compact chassis profile that enables the user to locate the unit closer to the preparation and thereby minimize long lead lengths which contribute to noise. Each amplifier is equipped with selectable high and low filters, and a position control to offset galvanic potentials which may develop during recording. A choice of models offer additional features that are useful for certain applications.
Portability
DAM series amplifiers can be used as standalone units on any tabletop, or use optional clamp-mounting hardware to locate them conveniently within the work area. Alternatively, a pair of amplifiers can be mounted into a standard equipment rack with a rack mount kit (#3484). A variety of hook up accessories are available to configure your application.
| INPUT IMPEDANCE |
1012 ohm, common mode and differential |
| INPUT LEAKAGE CURRENT |
50pA (typical) |
| MAX. DC DIFFERENTIAL SIGNAL |
±2.5V (DAM 50) |
| GAIN |
AC: 100x, 1000x, 10000x, DC: 10x, 100x, 1000x (DAM50) |
| COMMON MODE REJECTION RATIO |
100dB @ 50/60Hz |
| INPUT CAPACITANCE |
20pF |
| AC MODE NOISE |
0.4μV RMS (2uV p-p) 0.1-100Hz |
| AC MODE NOISE |
2.6μV RMS (10uV p-p) 1 Hz-10kH |
| DC MODE NOISE (DAM50) |
(DAM50) 7.5uV RMS (30uV p-p) 3-10kHz |
| BANDWIDTH FILTER SETTINGS:AC Mode |
Low frequency, 0.1, 1, 10, 300Hz |
| BANDWIDTH FILTER SETTINGS: DC Mode(DAM50) |
High frequency, 0.1, 1, 3, 10kHz |
| OUTPUT CONNECTORS |
BNC on DAM50; |
| OUTPUT VOLTAGE SWING |
±8V |
| OUTPUT IMPEDANCE |
470Ω |
| BATTERY TEST |
Audible tone |
| CALIBRATOR SIGNAL |
10Hz square wave |
| POSITION |
Approximately 250mV |
| EXTERNAL COMMAND |
Input Voltage ±10 V commands |
| AC or DC current waveform |
±50μA max. amplitude @ 200Ω |
| BATTERIES |
2 x 9V alkaline (included) |
| DIMENSIONS:DAM50 |
8 x 4 x 1.75 in. (20.3 x 10.2 x 4.4 cm) |
| SHIPPING WEIGHT |
3.5 lb (1.6 kg) |
The following bandwidth charts for the DAM50 show the response of the amplifier when various filters and gains are used. For larger images, click on the thumbnails below.
GAINS: This chart shows the standard 3dB frequency cutoff at maximum filter band pass.
FILTERS: Various low pass and high pass filters were applied at the AC x1000 gain setting to show the bandwidth of and actual DAM50 amplifier.
To place an order for this product, please contact the appropriate WPI office or distributor.
Customers from North America can order direct from our corporate office:
World Precision Instruments
175 Sarasota Center Boulevard
Sarasota, FL 34240-9258
- Phone or Fax
Toll-free: 866-606-1974 Tel: 941-371-1003 Fax: 941-377-5428
Our Customer Service Representatives are available 8am - 6pm EST.
- Online Store
Many of our products are available for purchase through our online store.
At this time we can only accept orders from the U.S. through the online store.
-
Want instant pricing? Order a free catalog here
International customers, please see our
office and distributor contact information list.
DAM80P
|
Replacement Probe |
3072
|
6 Replacement Modular Cables (DAM50)
|
| 3517 |
2 Optional Shielded modular Cables (DAM 50)
|
CBL102
|
3.5mm Phone plug to BNC Cable
|
2851
|
BNC-to-BNC Cable
|
2033
|
Black Insulated Mini-Banana Plug
|
2034
|
Red Insulated Mini-Banana Plug
|
2035
|
Uninsulated Mini-Banana Plug
|
| 2102 |
9V Alkaline Battery, each (2 required)
|
3484
|
Rack Mount Kit (for 2 DAM preamps)
|
3485
|
Ringstand Mounting Kit
|
5447
|
Electrode Adapter (DAM50)
|
5469
|
Metal Micro electrode Adaptor (DAM80) (mini banana plug to 0.031 in. socket)
|
5489
|
Adapter for Metal Microelectrod (DAM50)
|
13388
|
Adapter, mini-banana plug to 2mm socket
|
5371
|
Cable, Low noise (2mm pin to 2mm pin)
|
3578
|
Adapter Cable for Ag/AgCl pellets (2mm pin)
|
300102
|
Electrode Extension, 4"
|
| 3414 |
9V NiMH Battery
|
Startup kit includes the 3517 (2 optional shielded modular cables)
Application Examples (Schematics)
DIFFERENTIAL APPLICATION FOR METAL ELECTRODES
In this setup, metal electrodes are used with a differential amplifier. In this setup, a DAM80 is shown, but you could easily substitute a DAM50 (with 5489), ISO-DAM8A (with 74040) or ISO-80.
