TLV1562IPW datasheet(13/40 Pages) TI

13 / 40 page

TLV1562

2.7 V TO 5.5 V, HIGH-SPEED LOW-POWER RECONFIGURABLE ANALOG-TO-DIGITAL

CONVERTER WITH 4-INPUT, DUAL S/H, PARALLEL INTERFACE, AND POWER DOWN

SLAS162 – SEPTEMBER 1998

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

detailed description (continued)

Table 3. Maximum Conversion Speed (for 1 LSB INL and DNL at 10 bit)

MAXIMUM CONVERSION THROUGHPUT†

CONVERSION MODE

CR0.(3,2)

EXTERNAL CLOCK

(10 MHz)

INTERNAL CLOCK

(8 MHz)

1.5 MSPS

1.1 MSPS

Mono interrupt driven conversion mode

RD with auto power down

0.82 MSPS

0.68 MSPS

Mono interrupt-driven conversion mode

CSTART

1.5 MSPS

1.1 MSPS

CSTART with auto power down

0.82 MSPS

0.68 MSPS

Dual interrupt driven conversion mode‡

CSTART

1.5 MSPS

0.91 MSPS

Dual interrupt-driven conversion mode‡

CSTART with auto power down

1.05 MSPS

0.83 MSPS

Mono continuous conversion mode

2 MSPS§

1.33 MSPS§

Dual continuous conversion mode

2 MSPS¶

1.33 MSPS¶

† Speed is calculated for 5-V with a 2-V reference

(5.5 V to 3 V, I-temperature and C-temperature: 2 MSPS at 10 bit, 3 MSPS at 8 bit, 7 MSPS at 4 bit;

3 V to 2.7 V, C-temperature: 2 MSPS at 10 bit, 2.5 MSPS at 8 bit, 7 MSPS at 4 bit;

3 V to 2.7 V, I-temperature: 1.6 MSPS at 10 bit, 2.5 MSPS at 8 bit, 7 MSPS at 4 bit).

Higher throughput is possible when the linearity requirement is relaxed.

‡ Dual interrupt mode is available to 8-bit or 10-bit resolution and single-ended input type.

§ Throughput from single selected channel.

¶ Combined throughputs from a pair of selected channels.

RD-Strobe

Mono Interrupt Mode: 0 RD-Delay

Mono Continuous Mode : 1 RD-Delay

Dual Continuous Mode : 2~3 RD-Delay

Dual Interrupt Mode: 0~1 RD-Delay

Conversion Results

Conversion Start

Figure 10. Digital Delays for Different Conversion Modes

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