PRODUCT DESCRIPTION
The AD816 consists of two high current drive and two low noise amplifiers. These can be configured differentially for driving low impedance loads and receiving signals over twisted pair cable or could be used independently for single ended driving application such as correction circuits within high resolution CRT Monitors.
The two high output drive amplifiers are capable of supplying a minimum of 500 mA continuous output current and up to 1A peak output current, and when configured differentially, 40 V p-p differential output swing can be achieved on ±15 V supplies into a load of 50 Ω. The drivers have 120 MHz of bandwidth and 1,500 V/µs of differential slew rate while featuring total harmonic distortion of –68 dB at 1 MHz into a 100 Ω load, specifications required for high frequency telecommunication subscriber line drivers.
The low noise voltage feedback amplifiers are fully independent and can be configured differentially for use as receiver amplifiers within a subscriber line hybrid interface or individually for signal conditioning or filtering. The low noise of 4 nV/√Hz and distortion of –68 dB at 1 MHz enable low level signals to be resolved and amplified in the presence of large common-mode voltages. 100 MHz of bandwidth and 180 V/µs of slew rate combined with a load drive capability of 70 mA enable these amplifiers to drive passive filters and low inductance coils. The AD816 has thermal overload protection for system reliability and is available in low thermal resistance power packages. The AD816 operates over the industrial temperature range (–40°C to +85°C).

FEATURES
Flexible Configuration
   Two Low Noise Voltage Feedback Amplifiers with
      High Current Drive, Ideal for ADSL Receivers or
      Drivers for Low Impedance Loads such as CRT Coils
   Two High Current Drive Amplifiers, Ideal for an ADSL
      Differential Driver or Single Ended Drivers for Low
      Impedance Loads such as CRT Coils
Thermal Overload Protection

CURRENT FEEDBACK AMPLIFIERS/DRIVERS
High Output Drive
   26 dBm Differential Line Drive for ADSL Transmitters
   40 V p-p Differential Output Voltage, RL = 50 V @ 1 MHz
   500 mA Continuous Current, RL = 5 V
   1 A Peak Current, 1% Duty Cycle, RL = 15 V for DMT
Low Distortion
   –68 dB @ 1 MHz THD, RL = 100 V, VO = 40 V p-p
High Speed
   120 MHz Bandwidth (–3 dB)
   1500 V/ms Differential Slew Rate, VO = 10 V p-p, G = +5
   70 ns Settling Time to 0.1%
  
VOLTAGE FEEDBACK AMPLIFIERS/RECEIVERS
High Input Performance
   4 nV/√Hz Voltage Noise
   15 mV Max Input Offset Voltage
Low Distortion
   –68 dB @ 1 MHz THD, VO = 10 V p-p, RL = 200 V
High Speed
   100 MHz Bandwidth (–3 dB)
   180 V/ms Slew Rate
High Output Drive
   70 mA Output Current Drive
  
APPLICATIONS
  ADSL, VDSL and HDSL Line Interface Driver and Receiver
  CRT Convergence and Astigmatism Adjustment
  Coil and Transformer Drivers
  Composite Audio Amplifiers