Part Number: ADS8887

Marking Code : 8887

Function: 18-Bit, 100-kSPS, True-Differential Input, SAR Analog-to-Digital Converter

Packages : MSOP-10 and SON-10 Type

Manufacturer: Texas Instruments

Pinouts:

 

Description

The ADS8887 is an 18-bit, 100-kSPS, true-differential input, analog-to-digital converter (ADC). The device operates with a 2.5-V to 5-V external reference, offering a wide selection of signal ranges without additional input signal scaling. The reference voltage setting is independent of, and can exceed, the analog supply voltage (AVDD).

The device offers an SPI-compatible serial interface that also supports daisy-chain operation for cascading multiple devices. The device supports unipolar, true-differential analog input signals with a differential input swing of –V ref to +V ref. This true-differential analog input structure allows for a common-mode voltage of any value in the range of 0 V to +Vref
(when both inputs are within the operating input range of –0.1 V to Vref + 0.1 V).

Features

1. Sample Rate: 100 kHz

2. No Latency Output

3. Unipolar, True-Differential Input Range : –VREF to +VREF

4. Wide Common-Mode Voltage Range : 0 V to VREF with 90-dB CMRR (min)

5. SPI-Compatible Serial Interface with Daisy-Chain Option

 

Applications:

1. Automatic Test Equipment (ATE)

2. Instrumentation and Process Controls

3. Precision Medical Equipment

 

Other data sheets are available within the file:

ADS8887IDGS, ADS8887IDGSR, ADS8887IDRCR, ADS8887IDRCT

 

ADS8887 Datasheet PDF Download

Part Number: ADC0820-N

Function: 8-Bit Serial I/O A/D Converters with Multiplexer Options

Package: DIP 20 Pin Type

Manufacturer: Texas Instruments

Image and Pinouts:

 

Description

By using a half-flash conversion technique, the 8-bit ADC0820-N CMOS A/D offers a 1.5 µs conversion time and dissipates only 75 mW of power. The half flash technique consists of 32 comparators, a most significant 4-bit ADC and a least significant 4-bit ADC.

The input to the ADC0820-N is tracked and held by the input sampling circuitry eliminating the need for an external sample-and-hold for signals moving at less than 100 mV/µs.

For ease of interface to microprocessors, the ADC0820-N has been designed to appear as a memory location or I/O port without the need for external interfacing logic.

Features

1. Built-In Track-and-Hold Function

2. No Missing Codes

3. No External Clocking

4. Easy Interface to All Microprocessors, or Operates Stand-Alone

5. No Zero or Full-Scale Adjust Required

Other data sheets are available within the file:

ADC0820BCWMX, ADC0820BCWMX/NOPB, ADC0820CCN, ADC0820CCN/NOPB

 

ADC0820-N Datasheet PDF Download