AT84AD004

Features:

•Dual ADC with 8-bit Resolution
•500 Msps Sampling Rate per Channel, 1 Gsps in Interlaced Mode
•Single or 1:2 Demultiplexed Output
•LVDS Output Format (100Ω)
•500 mVpp Analog Input (Differential Only)
•Differential or Single-ended 50Ω PECL/LVDS Compatible Clock Inputs
•Power Supply: 3.3V (Analog), 3.3V (Digital), 2.25V (Output)
•LQFP144 Package
•Temperature Range:
0°C < T_A < 70°C (Commercial Grade)
-40°C < T_A < 85°C (Industrial Grade)
•3-wire Serial Interface
16-bit Data, 3-bit Address
1:2 or 1:1 Output Demultiplexer Ratio Selection
Full or Partial Standby Mode
Analog Gain (±1.5 dB) Digital Control
Input Clock Selection
Analog Input Switch Selection
Binary or Gray Logical Outputs
Synchronous Data Ready Reset
Data Ready Delay Adjustable on Both Channels
Interlacing Functions:Offset and Gain (Channel to Channel) CalibrationDigital Fine SDA (Fine Sampling Delay Adjust) on One ChannelInternal Static or Dynamic Built-In Test (BIT)


Application

• Instrumentation
• Satellite Receivers
• Direct RF Down Conversion
• WLAN


Pinout




Specifications

Parameter	Symbol	Value	Unit
Analog positive supply voltage	VCCA	3.6	V
Digital positive supply voltage	VCCD	3.6	V
Output supply voltage	VCCO	3.6	V
Maximum difference between VCCA and VCCD	VCCA to VCCD	±0.8	V
Minimum VCCO	VCCO	1.6	V
Analog input voltage	VINI or VINIB VINQ or VINQB	1/-1	V
Digital input voltage	VD	-0.3 to VCCD + 0.3	V
Clock input voltage	VCLK or VCLKB	-0.3 to VCCD + 0.3	V
Maximum difference between	VCLK and VCLKBVCLK - VCLKB	-2 to 2	V
Maximum junction temperature	TJ	125	°C
Storage temperature	Tstg	-65 to 150	°C
Lead temperature (soldering 10s)	Tleads	300	°C

Description

The AT84AD004 is a monolithic dual 8-bit analog-to-digital converter, offering low 1.4W power consumption and excellent digitizing accuracy. It integrates dual on-chip track/holds that provide an enhanced dynamic performance with a sampling rate of up to 500 Msps and an input frequency bandwidth of 1 GHz. The dual concept, the integ-rated demultiplexer and the easy interleaving mode make this device AT84AD004 user-friendly for all dual channel applications, such as direct RF conversion or data acquisition. The smart func-tion of the 3-wire serial interface eliminates the need for external components, which are usually necessary for gain and offset tuning and setting of other para-meters, leading to space and power reduction as well as system flexibility.