Texas Instruments ADS9129 Bedienungsanleitung

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ADS912x 16-Bit, 20MSPS SAR ADCs With Fully Differential ADC Input Driver

1 Features

•High-speed and low-power:

–ADS9129: 20MSPS, 274mW

–ADS9128: 10MSPS, 83mW

–ADS9127: 5MSPS, 59mW

•Feature integration:

–Integrated ADC driver

–Integrated precision reference

–Common-mode voltage output buffer

•High performance:

–16-bit no missing codes

–INL: ±0.3LSB, DNL: ±0.3LSB

–SNR: 93.9dB

•Wide input bandwidth:

–ADS9129 and ADS9128: 90MHz (–3dB)

–ADS9127: 45MHz (–3dB)

•Serial LVDS interface:

–SDR and DDR output modes

–Synchronous clock and data output

•Extended operating range: –40°C to +125°C

2 Applications

•Power analyzers

•Source measurement units (SMU)

•Marine equipment

•Servo drive position feedback

•DC power supplies, AC sources, electronic loads

3 Description

The ADS912x is a family of 16-bit, high-speed,

analog-to-digital converters (ADCs) with an integrated

driver for the ADC inputs. The integrated ADC

driver simplifies the signal chain, reduces power

consumption for precision applications, and supports

high-frequency signals beyond 1MHz. By not requiring

an external decoupling capacitor, the integrated ADC

reference buffer is optimized for wide bandwidth

applications.

The ADS912x uses a serial LVDS (SLVDS)

data interface that enables high-speed digital

communication while minimizing digital switching

noise. Read the ADC data using separate SLVDS

outputs per ADC channel or one SLVDS output for

both ADC channels.

Package Information

PART NUMBERPACKAGE

(1)

PACKAGE SIZE

(2)

ADS9129, ADS9128,

ADS9127

RHA (VQFN, 40)6mm × 6mm

(1)For more information, see the Mechanical, Packaging, and

Orderable Information.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

SAR

ADC

SMPL_CLKREFIO

AINP

AINM

VCMOUT

DOUT

DCLK

VDD_1V8AVDD_5V

SCLK

SDI

SDO

Configuration Registers

Serial

LVDS

Data

Interface

FCLK

GND

4.096V

CS

NCO

Temperature

Sensor

Mixer

N

2.4V

Device Block Diagram

ADS9127, ADS9128, ADS9129

SBASB82 – MAY 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Produktspezifikationen