CXD2315Q View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXD2315Q

10-bit 80MSPS 1ch D/A Converter (Ultra-low Glitch Version)

Sony Semiconductor 

CXD2315Q

• IO pin

The IO pin is the inverted current output pin described in the Pin Description. The sum of the currents output

from the IO pin and the IO pin becomes the constant value for any input data.

However, the performances such as the linearity error of the IO pin output current is not guaranteed.

GE (Glitch energy)

GE, described in the CXD2315Q, is a spike noise which appears synchronizing with the clock falling edge

when the input data (for 1 to 1024 input) changes to 128, 256, 384, 512, 640, 768, 896, and 1024. Fig. 1

shows the change state of GE for the staircase wave output, and Fig. 2 shows the repetitive output waveform

where the GE appears. These figures exhibit the difference of this IC from the conventional device.

2.0

1.0

0

512

1024

Digital input [V]

Conventional

device

CXD2315Q

CLK

Fig. 1. Change of GE for staircase wave output

Conventional device (GE typ.=200pV-s)

CXD2315Q (GE typ.=10pV-s)

Fig. 2. Repetitive output waveform where GE appears (for 200 Ω, 2 Vp-p output)

The CXD2315Q reduces the GE much shown in Fig.s 1 and 2.

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