JPH04365367A - Analog array - Google Patents

Abstract

PURPOSE:To contrive to enhance an electrical characteristic by a method wherein a specific region in which elements for the purpose of a specific circuit configuration are provided within an IC chip. CONSTITUTION:Transistors 3i, 3i are respectively connected to transistors 3j, 3k through an aluminum wiring 4a within a specific region 5. Further, a transistor 3j is connected to a transistor 3b through an aluminum wiring 4b, transistors 3k, 3b, 3m are connected through an aluminum wiring 4c, and the transistor 3m is connected to a resistance 2i through an aluminum wiring 4d. Thus, the specific region 5 is provided within an IC chip 1A and each element is arranged in the specific region 5 by expecting a specific circuit configuration beforehand, whereby the wiring is readily performed and a pattern layout becomes simple. Also, each element can be so arranged as not to deteriorate a bearing characteristic. Thus, an electrical characteristic is enhanced.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an analog array suitable for use in integrating analog circuits.

0002

2. Description of the Related Art FIG. 4 is a layout diagram showing an example of the pattern layout of IC chips in a conventional analog array. In FIG. 4, 1 is an IC chip, 2a to 2h are resistors arranged in a grid pattern within the IC chip, and 3a to 3h are transistors arranged in a grid pattern within the IC chip 1.

A desired electronic circuit is constructed by connecting the required number of resistors 2a to 2h and transistors 3a to 3l arranged in a grid in the IC chip 1 with aluminum wiring (not shown).

0004

[Problems to be Solved by the Invention] In conventional analog arrays, elements such as resistors and transistors are arranged in a grid pattern, so when configuring a large-scale circuit, it is difficult to connect elements located far apart. As a result, the aluminum wiring that connects the elements becomes longer, making pattern layout difficult, and elements that are located far apart tend to have different characteristics, which deteriorates the so-called pairing characteristics. There were problems such as deterioration of the electrical characteristics of the entire IC.

[0005] This invention was made to solve the above-mentioned problems, and the pattern layout is simple.
The purpose is to obtain an analog array IC with excellent electrical characteristics.

[0006]

[Means for Solving the Problems] An analog array according to the present invention includes a specific area in an IC chip in which elements intended for a specific circuit configuration are arranged.

[0007] Furthermore, the analog array according to the present invention includes:
The IC chip has a plurality of specific areas within the IC chip.

[0008] Furthermore, the analog array according to the present invention includes:
The IC chip has a plurality of specific areas with different circuit functions within the IC chip.

[0009]

According to the present invention, a specific area for arranging elements for a specific circuit configuration is provided in an IC chip. This simplifies the pattern layout and improves electrical characteristics.

Further, in the present invention, a plurality of specific areas are provided within the IC chip. This allows the circuit functionality to be expanded.

Further, in the present invention, a plurality of specific regions having different circuit functions are provided within the IC chip. This enables complex circuit functions and further expands the overall circuit function.

0012

【Example】

Example 1. FIG. 1 is a layout diagram showing a pattern layout of an IC chip according to an embodiment of the present invention. In FIG. 1, parts corresponding to those in FIG. 4 are given the same reference numerals, and their explanations will be omitted. 1A is an IC chip, and 5 is a specific area provided within the IC chip 1A in which elements intended for a characteristic circuit configuration are arranged. 2i is a resistor as an element arranged in the specific region 5, 3i to 3m is a transistor as an element arranged in the specific region 5, and 4a to 4d are aluminum for connecting each element in the specific region 5. It's the wiring. In the specific area 5, transistors 3i and 3j are connected by an aluminum wiring 4a, and the transistor 3i
and 3k are connected by aluminum wiring 4a. Further, the transistors 3j and 3l are connected by an aluminum wiring 4b,
Transistors 3k, 3l, and 3m are connected by aluminum wiring 4c, and transistor 3m and resistor 2i are further connected by aluminum wiring 4d. As described above, in this embodiment, the specific area 5 is provided in the IC chip, and the specific area 5 is
Since each element is arranged assuming a specific circuit configuration in advance, wiring becomes easy and pattern layout becomes simple. Moreover, since each element can be arranged so that pairing characteristics do not deteriorate, electrical characteristics can be improved.

Example 2. FIG. 2 is a layout diagram showing a pattern layout of an IC chip according to another embodiment of the present invention. In FIG. 2, parts corresponding to those in FIG. 1 are given the same reference numerals, and their explanations will be omitted. 1B is an IC chip, 5a,
5b are specific areas provided in the IC chip 1B, in which elements intended for a specific circuit configuration are arranged, similar to the specific area 5 in FIG. Here, it is assumed that the specific areas 5a and 5b have the same circuit function. In this way, in this embodiment, a plurality of specific regions 5a and 5b are provided in which elements having a specific circuit configuration are arranged in advance in the IC chip, so that the same effects as in the first embodiment can be obtained. In addition to this, the circuit function can be expanded in this embodiment.

Example 3. FIG. 3 is a layout diagram showing a pattern layout of an IC chip according to still another embodiment of the present invention. In FIG. 3, parts corresponding to those in FIG. 2 are designated by the same reference numerals, and their explanations will be omitted. 1C is an IC chip, 5
c and 5d are specific areas in which elements intended for a specific circuit configuration are arranged. Note that here, specific areas 5c and 5d
have the same circuit function, but have a different circuit function from the specific areas 5a and 5b. As described above, in this embodiment, specific areas 5a, 5b and 5c, 5d are provided in the IC chip, in which elements having a specific circuit configuration are arranged in advance, and specific areas 5a, 5b and specific areas 5c, 5d are arranged. Since the circuit functions are made different, the same effects as in the first embodiment can be obtained, and this embodiment also allows complex circuit functions, thereby further expanding the overall circuit function.

[0015]

[Effects of the Invention] As described above, according to the present invention, the IC
Since the chip includes a specific area in which elements intended for a specific circuit configuration are arranged, pattern layout is simplified and electrical characteristics can be improved.

Further, according to the present invention, since a plurality of specific areas are provided within an IC chip, the pattern layout is simple, electrical characteristics can be improved, and circuit functions can be expanded.

Further, according to the present invention, since a plurality of specific areas with different circuit functions are provided in the IC chip, the pattern layout is simple, electrical characteristics can be improved, and complex circuit functions are possible. Furthermore, there is an effect that the overall circuit function can be expanded.

[Brief explanation of the drawing]

FIG. 1 is a layout diagram showing an embodiment of the present invention.

FIG. 2 is a layout diagram showing another embodiment of the invention.

FIG. 3 is a layout diagram showing still another embodiment of the present invention.

FIG. 4 is a layout diagram showing a conventional analog array.

[Explanation of symbols]

1A, 1B, 1C IC chips 2a to 2d, 2i Resistors 3a to 3d, 3i to 3m Transistors 4a to 4
d Aluminum wiring 5, 5a to 5d specific area

Claims (3)

[Claims] 1. An analog array characterized in that an IC chip includes a specific area in which elements intended for a specific circuit configuration are arranged. 2. The analog array according to claim 1, further comprising a plurality of specific areas within an IC chip. 3. The analog array according to claim 1, wherein the IC chip includes a plurality of specific areas having different circuit functions.