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2 MSPS Max Throughput at 10 Bit (Single

Channel), ±1 LSB DNL, ±1 LSB INL MAX

3 MSPS Max Throughput at 8 Bit (Single

Channel), ±1 LSB DNL, ±1 LSB INL MAX

7 MSPS Max Throughput at 4 Bit (Single

Channel), ±0.4 LSB DNL, ±0.4 LSB INL MAX

No Missing Code for External Clock Up to

15 MHz at 5.5 V, 12 MHz at 2.7 V

ENOB 9.4 Bit, SINAD 57.8 dB, SFDR

–70.8 dB, THD –68.8 dB, at fi = 800 kHz,

10 Bit

Wide Input Bandwidth for Undersampling

(75 MHz at 1 dB, >120 MHz at –3 dB) at

Rs = 1 kW

Software Programmable Power Down,

(1 mA), Auto Powerdown (120 mA)

Single Wide Range Supply 2.7 VDC to

5.5 VDC

Low Supply Current 11 mA at 5.5 V, 10 MHz;

7 mA at 2.7 V, 8 MHz Operating

Simultaneous Sample and Hold:

Dual Sample and Hold Matched Channels

Multi Chip Simultaneous Sample and Hold

Capable

Programmable Conversion Modes:

Interrupt-Driven for Shorter Latency

Continuous Modes Optimized for MIPS

Sensitive DSP Solutions

Built-In Internal/System Mid-Scale Error

Calibration

Built-In Mux With 2 Differential or 4

Single-Ended Input Channels

Low Input Capacitance (10 pF Max Fixed,

1 pF Max Switching)

DSP/m P-Compatible Parallel Interface

applications

Portable Digital Radios

Personal Communication Assistants

Cellular

Pager

Scanner

Digitizers

Process Controls

Motor Control

Remote Sensing

Automotive

Servo Controls

Cameras

description

The TLV1562 is a 10-bit CMOS low-power, high-speed programmable resolution analog-to-digital converter

based on a low-power recyclic architecture. The unique architecture delivers a throughput up to 2 MSPS (million

samples per second) at 10-bit resolution. The programmable resolution allows a higher conversion throughput

as a tradeoff of lower resolution. A high speed 3-state parallel port directly interfaces to a digital signal processor

(DSP) or microprocessor (mP) system data bus. D0 through D9 are the digital output terminals with D0 being

the least significant bit (LSB). The TLV1562 is designed to operate for a wide range of supply voltages

(2.7 V to 5.5 V) with very low power consumption (11 mA maximum at 5.5 V, 10 MHz CLKIN). The power saving

feature is further enhanced with a software power-down feature (1 mA maximum) and auto power-down (1 mA

maximum) feature.

Many programmable features make this device a flexible general-purpose data converter. The device can be

configured as either four single-ended inputs to maximize the capacity or two differential inputs to improve noise

immunity. The internal system clock (SYSCLK) may come from either an internally generated OSC or an

external clock source (CLKIN). Four different modes of conversion are available for different applications. The

interrupt driven modes are mostly suitable for asynchronous applications, while the continuous modes take

advantage of the high speed nature of a pipelined architecture. A pair of built-in sample-and-hold amplifiers

allow simultaneous sampling of two input channels. This makes the TLV1562 perfect for communication

applications. Conversion is started by the RD signal, which can also be used for reading data, to maximize the

throughput. Conversion can be started either by the RD or CSTART signal when the device is operating in the

interrupt-driven modes. The dedicated conversion start pin, CSTART, provides a mechanism to simultaneously

sample and convert multiple channels when multiple converters are used in an application.

The converter incorporates a pair of differential high-impedance reference inputs that facilitate ratiometric

conversion, scaling, and isolation of analog circuitry from logic and supply noise. Other features such as low

input capacitance (10 pF) and very wide input bandwidth (75 MHz) make this device a perfect digital signal

processing (DSP) companion for mobile communication applications. A switched-capacitor design allows

low-error conversion over the full operating free-air temperature range.

The features that make this device truly a DSP friendly converter include: 1) programmable continuous

conversion modes, 2) programmable 2s complement output code format, and 3) programmable resolution. The

TLV1562 is offered in both 28-pin TSSOP and SOIC packages. The TLV1562C is characterized for operation

from 0°C to 70°C. The TLV1562I is characterized for operation over the full industrial temperature range of

–40°C to 85°C.