AD9843A–SPECIFICATIONS

AUX1-MODE SPECIFICATIONS (TMIN to TMAX, AVDD = DVDD = 3.0 V, fDATACLK = 20 MHz, unless otherwise noted.)

Parameter

Min

Typ

Max

 

Unit

 

 

 

 

 

 

 

POWER CONSUMPTION

 

60

 

 

 

mW

 

 

 

 

 

 

 

MAXIMUM CLOCK RATE

20

 

 

 

 

MHz

 

 

 

 

 

 

 

INPUT BUFFER

 

 

 

 

 

 

Gain

 

0

 

 

 

dB

Max Input Range

1.0

 

 

 

 

V p-p

 

 

 

 

 

 

 

VGA

 

 

 

 

 

 

Max Output Range

2.0

 

 

 

 

V p-p

Gain Control Resolution

 

1023

 

 

 

Steps

Gain (Selected Using VGA Gain Register)

 

 

 

 

 

 

Min Gain

 

0

 

 

 

dB

Max Gain

 

36

 

 

 

dB

 

 

 

 

 

 

 

Specifications subject to change without notice.

 

 

 

 

 

 

AUX2-MODE SPECIFICATIONS (TMIN to TMAX, AVDD = DVDD = 3.0 V, fDATACLK = 20 MHz, unless otherwise noted.)

 

 

 

 

 

 

 

 

Parameter

Min

Typ

Max

 

Unit

 

 

 

 

 

 

 

POWER CONSUMPTION

 

60

 

 

 

mW

 

 

 

 

 

 

 

MAXIMUM CLOCK RATE

20

 

 

 

 

MHz

 

 

 

 

 

 

 

INPUT BUFFER

 

(Same as AUX1-MODE)

 

 

 

 

 

 

 

 

 

 

 

VGA

 

 

 

 

 

 

Max Output Range

2.0

 

 

 

 

V p-p

Gain Control Resolution

 

512

 

 

 

Steps

Gain (Selected Using VGA Gain Register)

 

 

 

 

 

 

Min Gain

 

0

 

 

 

dB

Max Gain

 

18

 

 

 

dB

 

 

 

 

 

 

 

ACTIVE CLAMP

 

 

 

 

 

 

Clamp Level Resolution

 

256

 

 

 

Steps

Clamp Level (Measured at ADC Output)

 

 

 

 

 

 

Min Clamp Level

 

0

 

 

 

LSB

Max Clamp Level

 

63.75

 

 

 

LSB

 

 

 

 

 

 

 

Specification subject to change without notice.

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Analog Devices AD9843A manual Power Consumption Maximum Clock Rate

AD9843A specifications

The Analog Devices AD9843A is a high-performance, integrated analog-to-digital converter (ADC) designed for a variety of applications requiring precise signal conversion. This device boasts a 12-bit resolution, making it suitable for capturing fine details in complex signals. The AD9843A operates with a maximum sampling rate of up to 130 MSPS (mega samples per second), which allows it to handle fast-changing waveforms effectively, ideal for applications in the fields of telecommunications, instrumentation, and medical imaging.

One of the standout features of the AD9843A is its dual-channel architecture, which enables simultaneous sampling of two input signals. This capability is particularly beneficial in applications such as radar and sonar systems, where capturing multiple input sources in parallel is critical. Furthermore, the ADC incorporates a high-speed programmable gain amplifier (PGA), providing adjustable gain settings to accommodate a wide range of signal amplitudes, ensuring optimal performance across various input conditions.

The AD9843A employs Differential Non-Linearity (DNL) and Integral Non-Linearity (INL) specifications, both of which contribute to its impressive accuracy and linearity. With a DNL of ±0.5 LSB (least significant bit) and an INL of ±1 LSB, the AD9843A minimizes distortion and enhances the fidelity of the digital representation of analog signals. Additionally, the device features low noise performance, which is essential for obtaining high-quality signal digitization, especially in sensitive applications where signal integrity is paramount.

Another key characteristic is the integrated sample-and-hold circuit that allows the ADC to capture input signals with minimal distortion during the conversion process. This design choice helps to stabilize the input signal, reducing the effect of sampling jitter. The AD9843A also provides various output data formats, including binary, gray code, and two's complement, which gives designers the flexibility to interface the ADC with different digital systems.

In terms of power consumption, the AD9843A is efficient, operating at a typical supply voltage of 5V. It offers a significant advantage for battery-operated devices by ensuring that the power requirements are kept low without compromising performance. With its combination of high throughput, low noise, and versatility, the Analog Devices AD9843A stands out as a robust solution for high-speed data acquisition systems, making it a preferred choice among engineers and designers across various industries.